Manassas · Third-Party Inspection Matrix

Compiled August 2026 from each jurisdiction's published websites, policy PDFs, permit packets, ordinances, and code amendments (9 parallel research agents, primary documents fetched and read; every claim below carries its source). Verification labels: VERIFIED = fetched page/PDF (some via reader-proxy or web.archive.org captures of the official URL where sites block automated fetches; noted in dossiers); SNIPPET = search result not fetched; INFERRED = from statewide code, not a local document.

Scope: 44 building-code authorities across DC, Northern Virginia + northern Shenandoah Valley, suburban/Southern/Western Maryland, and the WV eastern panhandle: 19 Virginia · 18 Maryland · the District · 6 West Virginia. That is the count used everywhere on this page. Rows below are fewer than 44 because co-administered localities share a row (Fauquier + Warrenton, Berkeley + Martinsburg, Jefferson + its three municipal offices); tier headings carry the jurisdiction count, not the row count.

Territory note (settled 2026-08-11): Spotsylvania, Stafford and Culpeper County are Richmond-branch territory (config.py JURISDICTION_BRANCH_MAP; Culpeper County reaches Manassas today only through the Virginia state fallback, which is a mapping gap, not a territory claim). All three are researched in full in the Richmond matrix. Spotsylvania and Stafford both run mature approved-roster programs, and Spotsylvania's "deep foundations supporting existing structures" category is the most UP-shaped published rule in either branch. Legacy Manassas-account jobs in those three are correct history and stay on the account; they are not on this page.

August 2026 additions: twelve jurisdictions that previously carried no research (Rockville, Gaithersburg, City of Frederick, Frederick County MD, Queen Anne's, Carroll, Leonardtown, La Plata, Indian Head, Cumberland, Frostburg, and Manassas Park) were researched to the same depth and merged into the tiers below. See "The twelve newly researched jurisdictions, product by product."

The legal frames (four regimes, verify per jurisdiction)

Virginia (19 jurisdictions + towns)

VUSBC §113.7 / 113.7.1 (13VAC5-63-130), already VERIFIED in the VB file: the building official may accept third-party inspection reports, and every building official MUST maintain a written policy (minimum qualifications, report format/timeframe, pre-qualification). Where nothing is published online, the policy exists on paper; request it.
VCC Ch 17 special inspections (1704/1705): R-3/R-5 residential exempt from mandatory SI unless the BO invokes it. Unlike Hampton Roads, NoVA has no single regional SI template: the big counties each run their own mature program (Fairfax SIP since 1973, Arlington ISD manual Feb 2024, PWC SIM, Fauquier 2019 guidelines adapted from the HR template; its boilerplate still contains a stray "Hampton Roads Community" phrase, VERIFIED).
Three of UP's existing cert-pipeline forms belong to these programs (all re-verified this session): Fairfax County's six-form third-party residential report set was replaced April 9, 2025 (forms carry no printed rev dates; diff ours against the current set); Arlington's SSI form = Appendix A of the Feb-2024 SI & Pre-Construction Manual; Prince William's "Building Inspection Certification" form is now Version 2025-05-01 under a policy revised May 1, 2025. If our stored copies predate these, swap them.

District of Columbia

DOB Third-Party Program (D.C. Code §6-1405.03; 12-A DCMR §109.4); VERIFIED, full 67-pp Procedural Manual read (eff. 11/6/2017, rev. 5/15/2023): owner may elect a DOB-certified Third-Party Agency for inspections in lieu of DOB, including an explicit Residential-only track (ICC R5 inspectors) for IRC one/two-family work. Agency certification: applications accepted only Jan 1-Mar 1 each year; DC-licensed PE/RA Professional-in-Charge + ICC certs + E&O insurance + DC business license; biennial recert; all work through the mandatory Tertius platform; reports in 3 business days (SI reports 7).
Special Inspection Policy Manual (eff. 10/1/2022, rev. 5/15/2023), VERIFIED: IBC Ch 17 categories incl. driven/CIP deep foundations and helical piles (1705.9); DC-specific: underpinning of party walls shared with attached/semi-detached one- and two-family dwellings requires special inspection (per AB CC2015-01); the residential exemption does NOT shelter rowhouse underpinning. AB 2025-02 (Feb 2025) adds TPSIA sequence-monitoring duties "including but not limited to underpinning."
Practical blocker: UP has no DC-licensed PE/RA (Valerio = MD/VA/CT; Diehl = MD architect). DC licensure + DOB agency certification (Jan-Mar window) come before any of this is usable.

Maryland (9 counties + 9 municipal building offices)

MBPS (COMAR 09.12.51) adopts IBC/IRC statewide but every county amends and enforces locally. Confirmed: the nine counties run nine genuinely different regimes, from Montgomery's formal engineer-in-lieu program (since 1983) and Rockville's full IBC Ch 17 special-inspection program to Allegany's "all inspections are private third-party" model to Calvert's and Carroll's all-in-house posture.
Nine Maryland municipalities in this branch run their own building offices, separate from their county (all VERIFIED against the Maryland Department of Labor Building Codes Administration municipal contact roster, labor.maryland.gov/labor/build/buildmuni.shtml, plus each town's own pages): Rockville, Gaithersburg, City of Frederick, Laurel, Leonardtown, La Plata, Indian Head, Cumberland, Frostburg. The county has no jurisdiction inside those limits, so a Montgomery or Charles or Frederick County answer is the wrong answer at those addresses.
The Maryland pattern that matters most here is delegation. Five of these authorities do not employ their own building inspectors at all; they buy the whole inspection function from a private agency: Queen Anne's County → MDIA (Middle Department Inspection Agency, Easton, 410-822-8300, VERIFIED in the county's own residential bulletin), Charles County + La Plata + Indian Head → Planchek, Inc. (Waldorf, under county contract since 1997, VERIFIED), Frostburg → MEGCO Inspections LLC (plan review and all inspections, VERIFIED), Leonardtown → "an independent inspecting agency" under contract to the town (SNIPPET, town code Ch. 48). Allegany County and the City of Cumberland go one step further and let the applicant pick the agency. Delegation is not the same thing as a published third-party pathway, and in four of those five we cannot elect to be the inspector by right, but it is the shortest argument in the branch: the AHJ already accepts a private firm's sealed inspection; the only question is which firm.
City of Laurel runs its own building office separate from PG DPIE (VERIFIED both sides): own IBC/IRC 2021 adoption, own inspections, no published third-party pathway.

West Virginia panhandle (2 counties + municipalities)

87 CSR 4 is local-option: Berkeley, Jefferson, Martinsburg, Charles Town, Ranson all enforce the state's 2018 I-code/2020 NEC package; Shepherdstown turned out to have no documented building-code regime at all (8/2026 full-ordinance read: zoning/historic permits only, no SBC adoption on the books; see the WV dossier). Third-party inspection is an electrical institution here (Fire-Marshal-approved private electrical inspectors everywhere); nothing published for structural. UP has no WV-licensed PE, the same gating issue as DC.

THE MATRIX

Tier 1: Published product-specific rules (9 jurisdictions, incl. the branch's four biggest books)

UP	Jurisdiction	UND	ANC	BRC	SUP	FND	WTR	ENC	RTW	How it works
✓	Prince William	●¹	◆	●¹	●¹	◆	◆	◇	●²	Cert form v2025-05-01 names "foundation repairs, structural repairs, pile/pier foundations" as third-party line items. Per-individual PE/architect enrollment + mandatory seminars; daily summary report; monthly QC.
✓	Prince George's MD	●³	◆	◆	◆	●⁴	●⁴	◇	◆⁵	TPIP: deep foundations/underpinning = program trigger; "Pier and Pile Foundations Field Inspector" a named category; $1M E&O. TPIP-R = voluntary residential third-party for foundations/walls/waterproofing/drain tile.
✗	Fairfax County	●⁶	◆	◆	◆	●⁶	●⁶	◇	●⁷	Third-Party Residential Inspections Program (eff. 7/1/2024): county-approved firms inspect in lieu of county: pier footings, foundations, waterproofing/backfill, RTW <4 ft. Problem-soils/geotech jobs excluded, the big caveat.
✗	DC	●⁸	●⁹	◆	◆	◆	◇	◇	●¹⁰	TPIA inspects in lieu of DOB (residential R5 track); rowhouse party-wall underpinning = mandatory SI even on 1-2-family; helical piles §1705.9. Blocked on DC PE/RA licensure.
✓	Montgomery MD	●¹¹	◇	◇	◆	●¹²	●¹²	◇	●¹³	Residential Special Inspections Program (since 1983): DPS-approved MD engineer certifies footing / waterproofing-drainage / slab in lieu of DPS (the "Residential SIR" form UP already uses). Underpinning = separate permit + MD SE design + SI.
✓	Alexandria City	●¹⁴	●¹⁴	◆	◆	●¹⁵	●¹⁴	◇	●¹⁶	SI Short Form (PP2012-11) purpose-built for "Engineered Foundation and Retaining Wall Anchoring Systems Repairs of Limited Scope": helical piers, pilings, ICC-ES anchor systems, SFD drains/waterproofing; owner's VA RDP may be the SI. Soils policy PP2012-13 requires sealed soil-suitability report w/ probable cause on every foundation-repair permit.
✓	St. Mary's MD	◆	◆	◆	◆	●¹⁷	◇	◇	◇	Amended IBC §110.2.2: "A licensed professional engineer may make footing, foundation and concrete slab inspections" with sealed report; county keeps a qualified-inspector list; MDIA/PLANCHEK/CECA named in county guide.
✓	Rockville MD	●¹⁹	◆	◆	◆	●²⁰	◆	◇	◆²¹	City runs its own IBC Ch 17 Special Inspections Program (form set A1-A5, VERIFIED): the schedule names Inspection of Pile Foundations, Inspection of Pier Foundations, Inspection of Soil Conditions, and §1705.9 helical pile foundations = continuous special inspection. Special inspectors are approved by CPDS before any duties, submit qualifications and sit a personal prequalification interview, and may have no financial interest in the project. Reports to the building official and the design professional in charge; final signed report countersigned by the RDP in responsible charge.
✓	Arlington	●¹⁸	◆	◆	◆	◆	◆	◇	●¹⁸	SI manual (Feb 2024) names underpinning (3H:1V influence-zone settlement monitoring), helical piles, earth retention; published 3P policy (RDP-supervised, 3-day sealed reports, pre-approval). UP's Arlington SSI form = manual Appendix A.

Tier 2: Published general third-party pathway (12 jurisdictions in 11 rows; conditions apply)

UP	Jurisdiction	All products	Policy conditions
✓	Loudoun	◆	Third Party Building Inspection Program: sole qualification = VA PE/architect registration + application (lowest bar in the branch); footing/foundation, backfill, slab + 6-point retaining-wall inspection list; reports sealed, 7 business days, via LandMARC. Governing PDF dated 2013; confirm details. Leesburg/Purcellville permits issued by county.
✓	Fauquier + Warrenton	◆	Twin policies (county eff. 12/30/15; town = same template): Approved Agency model: firm + individual inspectors, 1M/2M GL + $1M E&O + auto/WC, county/town listed as insured; soils & concrete-foundation inspections third-party ANYTIME at permit-holder request (others only on 48-hr backlog); 3-day copy/5-day sealed original; 10% county QC; no finals. Warrenton runs its own building dept; separate enrollment. Shrink/swell form (rev. 4/18/25) required with permits: "majority of the soils in Fauquier County" need engineered foundation/waterproofing/drainage design.
✓	Shenandoah	◆	Policy since 9/3/2019: third-party in lieu of county for exactly four foundation-stage inspections: footings, slabs, concrete walls, backfill/foundation drainage (UP's hold points); PE/architect qualifies; county report form; 2-day reports; project-by-project approval at permit application.
✓	Manassas City	◆	"Third party building inspections will be accepted from an approved list of inspectors" (VERIFIED) + published 2025 Third Party Inspectors list, unreadable online (403/no archive); CO requires RDP/SER-sealed Final Statement of Inspections. Call to get on the list.
✓	Falls Church City	◆*	No §113.7 policy published, but the 2021 Major Projects Manual (rev. 12/24/2025) names helical piles (1705.9) and underpinning as SI categories and allows work to proceed on the SIER's inspection when a city inspector is unavailable. Residential applicability unpublished.
✓	Rappahannock	◆	Policy eff. 7/16/2024 (BO Richard Cornell): exception-not-routine, pre-approved before permit; triggers = 48-hr unavailability/critical timing; VA RDP qualifies; 5-working-day reports on county Statement form. ⚠ "No direct relationship with the project" clause may collide with the engineer-of-record-inspects-own-job model; ask.
✓	Charles MD	◆	County's own inspection check-sheets accept engineer certifications at footing / foundation-wall / reinforcement / truss hold points ("If an engineer was used to certify… the certification is attached to the check sheet"); county contracts out its inspection labor (RFP 13-03); "Area of Special Geotechnical Consideration" (marine clay): 4-ft soil removal / 4-ft footing depth rules with PE geotech report accepted in lieu.
✓	Gaithersburg MD	◆	The Certified (Third-Party) Inspections Program is written into the City Code itself (Ch. 5 Art. I §5-3, IBC amendment 104.4.1-104.4.2, VERIFIED): owners and contractors on *commercial and* residential projects may have "certain construction inspections… performed and certified by private sector 'third-party' engineers and inspectors… in lieu of inspections by Inspections staff." Firm and personnel approved by the building official project by project, employed directly by the owner, independent of the designer and the contractors, no financial interest. Inspections must be under the direct supervision of, and certified by, a Maryland-licensed Registered Design Professional, with MD or ICC credentials for the field inspectors; approving non-conforming work costs you the approval. ⚠ The exception is the trap: the program does not apply to work under the city's Special Inspections Program, nor to new** residential construction of Groups R-3/R-4 under the IRC. Repair and alteration of existing dwellings, our entire book, is not what that exception names, so get the reading in writing before you rely on it.
✓	Frederick County MD	◆	The inspection-procedures sheet issued inside every permit packet carries the whole policy in two sentences (VERIFIED): "All inspections for Frederick County permits must be performed by Frederick County (Government) Inspectors, unless the Building Official pre-authorizes acceptance of an inspection report by a pre-approved agency or individual or requires same. The Building Official also has the authority to require testing procedures to be performed by a pre-approved testing agency." Discretionary and per-project, with no published roster, application form or qualification bar; the entire program is the building official's pre-authorization. County-run TPIP exists but is commercial electrical only (rev. 6/1/2026), so do not cite it for foundation work. Named county inspection phases include footing and backfill "when foundation walls have been parged and dampproofed and drain tile, gravel bed and red rosin paper cover are in place".
✓	Cumberland MD	◆	Allegany's model inside the city limits, and blunter: the city's own new-construction inspection checklist (2022 rev., VERIFIED) tells the applicant "Structural - YOU must contact a qualified inspection agency of your choice for: Footer/Slab (for walls, piers, columns)… Foundation/Pier & Beam - inspected after completed, moisture-proofed, drain in place with stone cover and filter membrane, and before backfill." Inspection reports go to Community Development before the occupancy permit. Still on the 2018 code package; footer depth 36"; damp-proofing plus footer drains required around all habitable below-grade space. The agency is the applicant's choice, so nothing stands between us and the work except being the agency the applicant names.
✓	Allegany MD	◆	"Currently, inspections are conducted by private, third party inspection agencies": applicant-arranged, agency sets scope/fees; "foundation/pier & beam" is a named inspection phase; SI "mandated by the design consultant." No agency roster or qualification criteria published; still on 2006 IBC/IRC; plans-examiner seat vacant.

Tier 3: No published third-party policy (23 jurisdictions; VA: §113.7 policy exists by law, request it)

UP	Jurisdiction	Status	What IS known
✓	Frederick VA	◇	Commercial permit doc (rev. 01/2025) has a real SI section (ASTM E329, RDP supervision); nothing residential, no 3P policy. BO Mark Fleet, (540) 665-5650, mfleet@fcva.us. Frost depth 24".
✓	Jefferson WV	◇	Tech Memo No. 1 (2002): county runs on WV-PE sealed certifications for engineered structural systems (steel beams REQUIRED to be SE-designed + certified); submittal certs, not inspection-in-lieu; case-by-case discretion. Charles Town/Ranson = own offices; Shepherdstown = zoning/historic permits only, no documented building-code regime (8/2026); Ranson publishes a 3P mechanism (3P testing/inspection firms need a Ranson business license + listing on the permit application), the best WV opening. No WV PE on UP's roster.
✓	Fairfax City	◇	SSI form published (IBC 1704, ASTM E329) but no manual, no 3P policy, no product rules; city performs its own footing→final inspections. Code Administration sits under the Fire Dept, 703-385-7830.
✓	Warren VA	◇	BO David Beahm (county covers Front Royal since the town's 2022 division folded back). Residential app has a "PIERS" foundation checkbox; electrical already outsourced to MDIA (3P precedent). Orphaned Front Royal shrink/swell policy still posted; currency unknown.
✓	Falls Church → Tier 2. Clarke (5)	◇	Shrink Swell Soils Policy = de-facto engineer-inspection regime: mapped moderate/high parcels choose "Engineer recommendations and Engineer on-site inspections per Ordinance §71-6" OR prescriptive 4-ft-deep foundations + drainage package. Permits required for repair of "any structural component." BO Brian Riston, (540) 955-5176.
✓	Winchester City	◇	Footing & As-Built Survey hold point (surveyor form at footing inspection, City Code §19-10-3). Current BO name not published (staff: Tom Mayhew, Richie Fletcher; 540-667-1815).
✓	Calvert MD	◇	All-in-house inspections; engineer certs required only as supplements (engineered floor/roof systems); RTW design trigger lowered to 36" unbalanced fill (2014 amendment; carry-forward to 2018 code unconfirmed); steep-slope declarations ≥25% (≥15% Critical Area); county contractor license req'd. Chief Joe Hawxhurst, 410-535-1600 x2523.
✓	Berkeley WV + Martinsburg	◇	County: full in-house regime (2018 codes); 3P = electrical only (4 approved firms); RTW >4 ft = permit line item; engineer touchpoints (steel beams, suspended slabs, out-of-range soil bearing = WV-PE seal). Director Brian Ross, 304-264-1966. Martinsburg = own office (BO Jay Bauserman, SNIPPET; 304-264-2131 x271); site blocks all fetches, so phone replaces the website.
✓	Page VA	◇	Thinnest corpus: standard permit forms ("Foundation Only" / "Remodel-Repair" checkboxes), required-inspections list handed out only at permit issuance. BO James Campbell, 540-743-6674.
✓	Manassas Park VA	◇	Independent city, own building office inside Development, Zoning & Code Enforcement Services (9701 Manassas Dr; inspections 703-335-8815, 24-hour notice, no same-day). Enforces the VUSBC directly with no local policy of any kind published: no 3P policy, no SI form, no inspection list online. Permit triggers we care about are published and unusually explicit: retaining walls >24", any height retaining wall carrying surcharge from a structure/road/driveway/sidewalk above, and removal or alteration of "any structural or non-structural members" (VERIFIED). §113.7 written policy exists by law; ask for it by name.
✓	City of Frederick MD	◇	Own building office (Building/Permits, a division of DPW) entirely separate from Frederick County; the county's pre-authorization clause does not reach inside the city. New code package took effect January 1, 2026 for applications received after that date; check which edition your permit was issued under before writing anything. Five inspection lines by trade, requested by phone 9am-2pm the day prior or through the OpenGov portal before 2pm. Chief Building Code Official Dustin Nusbaum, 301-600-3808. No third-party or engineer-certification provision published anywhere on the site.
✓	Queen Anne's County MD	◇	Delegated: the county employs no building inspectors: "the following inspections are called in to the Middle Department Inspection Agency (MDIA) at 410-822-8300" (VERIFIED, county residential bulletin), 24 hours to respond. Required phases are Footing (post-trench, pre-pour) and Foundation (complete, before backfill and framing), then framing/insulation/final. Ch. 10 amendments delete IBC 110.3.2/110.3.3/110.3.5 and renumber, and rewrite the foundation inspection as anchors/vents/termite shield, so the county's hold points are not the model-code hold points. No third-party pathway published; MDIA is the county's agency, not ours. Permitting & Zoning, 410-758-4088.
✓	Carroll County MD	◇	Thinnest corpus of the Maryland batch, and the negative is evidenced rather than assumed: the full Permits Forms and Documents library was enumerated (38 items, VERIFIED) and contains no statement of special inspections, no third-party application, no engineer-certification form. 2018 I-code package (Ch. 170); frost line 30"; building permits still require in-person submission. Municipalities inside the county run their own limits ("if you are located within a municipality, please contact them directly"). Bureau of Permits & Inspections, 410-386-2674, 225 N Center St, Westminster.
✓	Town of Leonardtown MD	◇	Own AHJ, not St. Mary's County: the town code designates a Building Code Official inside the Office of Planning and Zoning, and provides that "inspections… shall be arranged through the Leonardtown Office of Planning and Zoning by contract with an independent inspecting agency" (SNIPPET: ecode360 blocks fetching; the ordinance behind it, No. 172, was retrieved and OCR'd). Ordinance 172 writes the town's own foundation hold points into both code paths: footing, concrete foundation wall, slab, foundation steel, and "foundation backfill… prior to backfilling, to verify drainage and water proofing systems" (IBC 110.3.1-.5 and IRC R109.1.1-.5, VERIFIED). Those are our hold points, named, in a town that already inspects by contract. Code Enforcement Officer, 301-475-9791.
✓	Town of La Plata MD	◇	Own AHJ (Maryland Labor lists a Town Inspector), code administration contracted to Planchek, Inc., the same firm that has administered Charles County's building code since 1997. 2021 I-code package adopted 6/28/2024 (VERIFIED via Planchek). Permits and inspections run through the town Department of Planning; electrical and mechanical applications go straight to Planchek. Design-professional stamp required on plans for new residential and all commercial. No third-party or engineer-certification provision published; Ch. 75 of the town code is not retrievable (Municode blocks automated fetching), so the ordinance text is an open item. Town Hall 301-934-8421; Planchek 301-870-8710 / 301-645-3302.
✓	Town of Indian Head MD	◇*	Own AHJ, FIRM (8/2026): the town's own Ch. 170 (full ecode text read) adopts its own building code, designates a Building Official (Planchek's Steve Tackish, per the town's own designation), and writes the county's PE-geotechnical footing-depth opt-out directly into town code. The intake split is resolved: the town issues, Planchek administers. Planchek's published engineering-certificate practice applies: PE certs accepted at footing / wall / backfill / slab, with the exact required certification language published (VERIFIED, planchekinc.com). Codified base is IBC 2018; Planchek's adopted-codes page says the 2021 cycle applies town-wide since 6/28/2024: currency gap, one question. Town 301-743-5511; Planchek 301-645-3302.
✓	Frostburg MD	◇	Delegated, completely: approved plans "are transmitted to MEGCO Inspections for plan review" and "all inspections must be scheduled through MEGCO Inspections", 24 hours ahead, 800-304-5942 (VERIFIED). The city keeps zoning, historic-district and permit issuance; MEGCO holds the code function. Retaining walls need a permit at 30" above grade, or at any height if they retain a parking area, and the city publishes a Retaining Walls plan-review requirements sheet. No third-party election published: MEGCO is the third party. Planner Jamie Klink, 301-689-6000 x105; Code Enforcement Jay Hovatter x109. Almost no job history here; carried for completeness of the Allegany book.
✓	City of Laurel MD (sub-juris of PG book)	◇	Own permits/inspections (FMPS, 301-725-5300 x2238); IBC/IRC 2021 + local amendments (RTW ≤2 ft exempt; 30" frost; foundation-drainage outfall rule); no third-party pathway published; the only "third party" in the entire Ch. 18 ordinance is about roof reflectivity.
✓	Town of Herndon VA (in Fairfax book)	◇	Runs its own building department (VERIFIED-via-archive 8/2026: town's own Building Inspections Section pages, 2021 codes, RTW-over-3-ft trigger, SSI submittal form on its own forms list; 703-435-6850); Fairfax County's 3P program does NOT cover it. Named BO + §113.7 policy still unretrieved: call.

Footnotes (Tier 1):

PWC Building Inspection Certification form (v2025-05-01, policy rev. 5/1/2025, BO Eric M Mays PE): third-party categories include Footing & Foundation (controlled fill, footings, pile/pier foundations, backfill, drainage) and "Other Inspections (EIFS, foundation repairs, structural repairs)". Program since July 1987; PE/architect + WACEL/NICET/ACI/ICC field inspectors + mandatory county seminars; original-seal certification (no fax), daily summary report, ≥1 QC inspection per field inspector per month. Soils category (I/II/III per DCSM §770; ~40% of county = II/III incl. marine clay) must be circled on every form.
PWC retaining walls: own 3P certification track (footing/foundation, backfill, guard rail, wall geometry, compaction, layout); SI triggers at >8 ft unbalanced fill or 4-8 ft w/ surcharge/steep slope; permits >3 ft or any height w/ surcharge.
PG TPIP Manual (eff. 11/6/2020; 2026 edition exists, unreadable online): "Structures with deep foundations or requiring underpinning" = program trigger; "Pier and Pile Foundations Field Inspector" a named qualification (ICC Reinforced Concrete SI / NICET III-IV / WACEL); EOR may not be IOR in the same discipline; $1M blanket E&O; STPI = permit-issuance condition; 5-day reports; Final Report + sealed TPIP Certification before U&O.
PG TPIP-R (voluntary residential): approved third-party inspectors may conduct foundations/bearing (code 126), foundation walls (134), foundation drainage/waterproofing (081/136), below-slab base/drain tile/vapor barrier (162), drain tile & backfill; "TPIP-R" goes in the Momentum permit description; precon meeting w/ Darrell Terry or Omobola Sokoya.
PG retaining walls: <2 ft exempt; ⚠ TPIP problem-soils trigger tightened from >6 ft (2020 manual) to >2 ft (current DPIE page); confirm against the 2026 manual.
Fairfax Co. Third-Party Residential Inspections Program (policy eff. 7/1/2024): county-certified firms (Principal Professional = VA RDP + DHCD certs, min 4 yrs; QA plan; quarterly county QC; semi-annual program meetings) inspect in lieu of county; eligible list includes "Pier Footings," "Placement of Concrete," "Foundation Footings and Walls," "Waterproofing and backfill of foundation walls"; results same-day (policy says by Midnight). Exclusion: footing/slab 3P only when NOT on problem soils/controlled fill and no geotech report required; most foundation-repair work is problem-soil-adjacent, so confirm handling by phone.
Fairfax Co. retaining walls: 3P-eligible under 4 ft (WALLR permit >3-<4 ft, no surcharge, typical details available); ≥4 ft or surcharge → WALLC + SIP/Critical Structures track (SSI, SIER, mandatory pre-permit meeting). Towns of Clifton/Vienna need separate municipal approvals.
DC underpinning named in five verified places: TPP Manual §III.J (SI-agency types) + §VII.B (mandatory SI precon meeting "e.g., underpinning"); SIP Manual concrete section (party-wall underpinning of attached/semi-detached 1-2-family dwellings per AB CC2015-01) + soils section + earth-retention list; AB 2025-02 (TPSIA sequence monitoring). CC2015-01's own text is not retrievable on the current DOB site; open item.
DC "Post-Installed Structural Anchors in Concrete" = named special-inspector discipline; soldier-pile/tie-back earth retention triggers SSI.
DC retaining walls: >4 ft = sealed DC-RDP design + plat (DCRA guideline 2019-003); repairs reviewable from photos; SSI at ≥10 ft unbalanced fill.
Montgomery SI Manual (IBC 2021, rev. 3/28/2025): "All underpinning shall be designed by a structural engineer licensed in the State of Maryland"; separate permit for underpinning/deep foundations (micro/helical piles) and retaining walls; helical piles §1705.9; owner retains SI (contractors may not).
Montgomery Residential Special Inspections Program (rev. 8/4/2025; since 9/1/1983): DPS-approved MD engineer/architect certifies footing, foundation waterproofing/drainage (incl. interior drains w/ weep holes), and slab-on-ground in lieu of DPS on 1-2-family/townhouse permits incl. repair; free approval, no expiration, unique Inspector Number; sealed cert only at full compliance; report to DPS inspector within 5 days. ⚠ Approved-list page header says "footing and parging", stale vs. the program docs; flagged.
Montgomery retaining walls: permit >3 ft retained height (or surcharge/lot line/problem soils/tiered); >7 ft (or peculiar design) → Special Inspection Program; rebar/deadman/geogrid inspection (402) is DPS-only, NOT delegable to the residential program.
Alexandria SI Short Form (12/1/2017), anchored on the city policy index as PP2012-11 "Engineered Foundation and Retaining Wall Anchoring Systems Repairs of Limited Scope": for engineered limited-scope repairs the BO exempts from full SI process; "Foundation repairs… must be designed by a Structural Engineer and/or follow a proprietary system design tested or approved by ICC-ES"; scope checklist names pile foundations (timber, steel, auger cast, helical), pier foundations (caissons), ICC-ES proprietary anchoring systems; SFD foundation drains/waterproofing includable; SI = VA RDP employed by owner, may be the SER; 1-page SSI + 1-page Final Report short forms.
Alexandria Soils Policy PP2012-13: foundation-repair permits (bowed walls, underpinning, pilings, helical piers, drains, grouting…) require a sealed soil suitability report incl. probable cause of damage before permit issuance; LDP/agent inspects in-situ soil before placement.
Alexandria retaining walls: <2 ft no permit; 2-5 ft three options (detail package / presumptive 1,500 psf / soil report); >5 ft sealed soil report. Deep-foundation jobs: PP2015-01 adjacent-owner notification (one-block radius, 10-day window, "should" language). 100-yr-old/historic buildings: BAR approval before ANY permit.
St. Mary's amended IBC §110.4/110.2.2 (in county CAG-21): BO "may accept reports of inspections by licensed or certified third parties"; PE-sealed footing/foundation/slab reports explicitly authorized; Final Inspection Card lists every agency signing before U&O. Residential (IRC-side) applicability INFERRED (Municode Ch 203 blocked); confirm.
Arlington SI & Pre-Construction Manual (Feb 2024): underpinning (SE design + settlement monitoring of adjacent buildings within 3H:1V influence zone), helical piles 1705.7-.9, earth retention (SOE monitored ≥2×/week); WACEL/ICC/ACI-certified inspectors under RDP supervision; owner retains SI; 5-day reports (3-day for deficiencies); R-3/R-4/R-5 exempt unless BO invokes.
Rockville Special Inspections Program (Statement of Special Inspections Agreement + Schedule, posted 10/2025, read in full): the Schedule of Special Inspections carries Inspection of Pile Foundations and Inspection of Pier Foundations as their own check-boxed categories on both the statement and the final-report form; the test schedules behind them are IBC's: driven deep foundation elements ("verify placement locations and plumbness… record number of blows per foot of penetration… record tip and butt elevations"), cast-in-place deep foundation elements, and §1705.9 helical pile foundations, continuous special inspection. That blows-per-foot/tip-and-butt list is UP's driving log, item for item. §1705.10 structural integrity of deep foundation elements sits alongside it under engineering assessment.
Rockville FND: Inspection of Soil Conditions is a named category, with the IBC soils schedule underneath (bearing capacity below shallow foundations, excavation depth and material, compacted fill classification, subgrade before fill). Approval mechanics for all of it: special inspectors submit qualifications, sit a prequalification interview, may hold no financial interest in the project, display approved ID, log presence on Form A4, report discrepancies immediately to the EOR and the building official, file progress reports (A1/A2) on the official's interval, and close with a final report (A5) signed by the RDP in responsible charge.
Rockville RTW/ANC/BRC/SUP: INFERRED, not named. The program is IBC Ch 17 as adopted in Chapter 5 of the city code (2021 I-codes eff. 5/29/2024 per Administrative Bulletin 2024-01), so retaining walls, post-installed anchors and structural elements ride the soils/concrete/steel schedules when the design triggers special inspection, but no Rockville document names wall anchors, carbon-fiber bracing, IntelliJacks or retaining walls as their own category. ENC is not an inspection subject anywhere in the program. Confirm the residential reach by phone: the whole program is written in IBC language, and most of our work is IRC-side repair.

The twelve newly researched jurisdictions, product by product

Same glyphs, product by product, for the twelve added in August 2026. Read this the way the rest of the matrix reads: the glyph records what the authority has published about accepting an outside engineer's inspection of that work, not what UP inspects. UP inspects its catalog everywhere it inspects at all; the column tells you how much of that the AHJ has put in writing.

UP	Jurisdiction	UND	ANC	BRC	SUP	FND	WTR	ENC	RTW	Evidence
✓	Rockville MD	●	◆	◆	◆	●	◆	◇	◆	VERIFIED: SI program form set read in full; piles, piers, helical §1705.9 and soils named; anchors/bracing/support/RTW inferred from IBC Ch 17 adoption
✓	Gaithersburg MD	◆	◆	◆	◆	◆	◆	◆	◆	VERIFIED: city code §5-3 amendment 104.4 covers "certain construction inspections" generally, so the pathway carries the catalog; no product is named and none is excluded
✓	Frederick County MD	◆	◆	◆	◆	◆	◆	◆	◆	VERIFIED: BO pre-authorization clause is scope-blind; footing and parge/dampproof/drain-tile backfill are named county hold points
✓	Cumberland MD	◆	◆	◆	◆	◆	◆	◇	◆	VERIFIED: "agency of your choice" covers the structural phases; footer/slab "(for walls, piers, columns)" and "Foundation/Pier & Beam" named; ENC not an inspection subject
✓	Queen Anne's County MD	◇	◇	◇	◇	◇	◇	◇	◇	VERIFIED: footing and foundation hold points published, delegated to MDIA; no third-party election published for anyone else
✓	Town of Leonardtown MD	◇	◇	◇	◇	◇	◇	◇	◇	VERIFIED (Ord. 172, OCR): footing, foundation wall, slab, foundation steel and backfill-with-drainage-and-waterproofing named as hold points; inspecting agency is the town's, not the applicant's
✓	Town of La Plata MD	◇	◇	◇	◇	◇	◇	◇	◇	SNIPPET/VERIFIED mix: own AHJ and 2021 codes verified; Ch. 75 ordinance text unretrievable, so no acceptance provision either way
✓	Town of Indian Head MD	◆	◆	◇	◆	◆	◇	◇	◇	FIRM 8/2026: own Ch. 170 code read; BO = Planchek's Steve Tackish; Planchek's engineer-certificate practice (footing/wall/backfill/slab, published required language) VERIFIED for the town
✓	City of Frederick MD	◇	◇	◇	◇	◇	◇	◇	◇	VERIFIED: own office, own code adoption effective 1/1/2026, nothing published on third-party or engineer certification
✓	Carroll County MD	◇	◇	◇	◇	◇	◇	◇	◇	VERIFIED negative: full 38-item forms library enumerated, no SI or third-party instrument in it
✓	Frostburg MD	◇	◇	◇	◇	◇	◇	◇	◇	VERIFIED: MEGCO holds plan review and all inspections; RTW permit at 30" or any wall retaining parking
✓	Manassas Park VA	◇	◇	◇	◇	◇	◇	◇	◇	VERIFIED negative: nothing published; VUSBC §113.7 written policy exists by law, unretrieved (INFERRED from statute)

Per-jurisdiction dossiers (sources + contacts)

All 44 authorities are covered here, in 30 entries: localities researched as one book share an entry (Fauquier + Warrenton; Berkeley + Martinsburg; Jefferson + Charles Town + Ranson + Shepherdstown; Calvert / Charles / Allegany; Frederick VA + Winchester + Clarke + Warren; Page + Rappahannock). Entry count is not authority count, and the chips at the top of this page are entries.

Alexandria City

Code Administration 703-746-4200, 301 King St #4200; TPI program / Special Projects Manager 703-746-4210; Special/Third-Party Inspections manager: Pete.Mensinger@alexandriava.gov.
TPI Guidelines (12/1/2017, read): https://media.alexandriava.gov/docs-archives/code/info/third-party-inspection-guidelines-and-procedures=-december-1=--2017.pdf: $1M GL/E&O; TPIs barred from building/concealment/final inspections without Director permission, BUT VA RDPs/PEs practicing in competency are exempt from qualification pre-approval (project approval still required).
SI Guidelines (12/2017, read): …/special-inspections-guidelines-and-procedures-revision-december-2017.pdf: 7-working-day reports; Final Report before CO; Appendix D earth retention (≥10 ft/8-ft trench; GER inspects in problem soils; "backfill, drainage and waterproofing" named).
SI Short Form / PP2012-11 (read): https://www.alexandriava.gov/sites/default/files/2026-03/Special%20Inspections%20SHORT%20FORM%2C%20December%201%2C%202017.pdf
Soils PP2012-13 (read): …/pp201213soil-evaluation1and2familydwellingconstruction.pdf · Deep-foundation notification PP2015-01 (read): …/pp201501-notification-procedures-for-deep-foundation-projects.pdf · Wall check PP2012-03 (read) · policy index: https://www.alexandriava.gov/code-administration/code-administrations-policies-procedures
Retaining-wall details package + checklist (SNIPPET). Historic/BAR: approval before any permit on 100-yr-old buildings.

Arlington County

ISD 703-228-3800, 2100 Clarendon Blvd. CBO Shahriar Amiri (named in the county's own 3P policy PDF).
3P policy (read via proxy): https://www.arlingtonva.us/files/sharedassets/public/v/1/building/documents/third-party-inspections-in-arlington-county.pdf. ⚠ Legacy path, possibly dated (one snippet cites USBC 2006); confirm currency.
SI & Pre-Construction Manual (Feb 2024, read via proxy; SSI form = Appendix A pp. 43-62): https://www.arlingtonva.us/files/sharedassets/public/v/2/building/documents/inspections/pre-construction-manual-feb-2024.pdf · SI page: …/Building/Inspections/Special-Pre-Construction

Berkeley WV (+ Martinsburg) / Jefferson WV (+ Charles Town, Ranson, Shepherdstown)

Berkeley: Dept. of Building Permits & Inspections, 400 W Stephen St #202, Martinsburg; 304-264-1966; Director Brian Ross. Pages + 23-pp residential packet read: 2018 codes; permits required incl. "repair"; 3P electrical only (MDIA, Megco, On Point, S W George); RTW >4 ft fee line; engineer seals for steel beams/suspended slabs/out-of-range soils. https://www.berkeleywv.org/582/Building-Codes
Martinsburg (own office): 304-264-2131; BO Jay Bauserman x271, commercial inspector Kyle Parker x249 (SNIPPET; site 403s everything); MGO Connect portal; adopts WV State Building Code (Art. 1711). Phone replaces the website here.
Jefferson: Office of Building Permits & Inspections (Engineering Dept), 116 E Washington St, Charles Town; 304-725-2998, permits@jeffersoncountywv.org. Tech Memo No. 1 (3/1/2002, read: WV-PE certification policy for engineered systems; steel beams SE-designed + certified): https://www.jeffersoncountywv.org/home/showpublisheddocument/12134/636198088535230000 · Building Code Enforcement Ordinance (IRC/IBC per state adoption) · MGO Connect since 8/25/2025. No current staff names published (Roger Goodwin was BO in 2002; do not assume current).
Charles Town (own office): 304-725-2311; guide read (2018 codes; State Fire Marshal plan approval first for commercial; "Retaining walls" a named permit trigger; 3P electrical): https://cms2.revize.com/revize/charlestownwv/Documents/Government/Charles-Town-Guide-to-Building-Permit-Process-3.pdf
Ranson (own office): 304-724-5452, permits@ransonwv.us; Customer Guide (5/2/2023, read): 2018 IBC/IRC; "All 3rd Party Testing and Inspection companies are required to obtain a City of Ranson Business License and be listed on the permit application", the WV batch's only published 3P mechanism; "Foundation" is its own permit category; emergency-repair work may start immediately w/ next-business-day filing; WV RDP seal on foundation plans "as applicable."
Shepherdstown: the question FLIPPED (8/2026, full codified ordinance read, live). The town's code shows no adopted building code at all: the 12-title Code of Ordinances has no Building title; §9-1421 "Building Permits" references a State Building Code adoption whose date blanks are literally empty in the current codified text (2018 revision); and §9-902's "Project Permit" is entirely a Planning Commission / Zoning Officer exterior-appearance and historic-district review: no Building Official, no structural plan review, no footing/foundation/framing inspection anywhere. Only the IPMC (property maintenance) is named as adopted. Jefferson County's department does not cover incorporated towns (SNIPPET). As codified, nobody runs construction-code inspections here: the town is a zoning/historic permit window, and the floor-flag now reads "no documented building-code regime," not "depth unclear." An undocumented practice could exist; the codification is a 2018 revision. Karl Musser, 304-702-2305, kmusser@shepherdstown.us: ask whether the town ever adopted the WV SBC (the §9-1421 blanks) and who, if anyone, inspects structural work. https://www.shepherdstown.gov/Building

Calvert / Charles / St. Mary's → above / Allegany (MD)

Calvert: Chief Joe Hawxhurst, 410-535-1600 x2523, Joe.Hawxhurst@calvertcountymd.gov; inspections.permits@calvertcountymd.gov, 410-535-2155; Prince Frederick. 2018 codes eff. 7/1/2022 (page read); residential app (read: engineer certs for engineered floor/roof systems; foundation location survey before framing); DLLR amendments snapshot (read; RTW 36" design rule, 2014-dated). No 3P program.
Charles: Building Code Official, Permits Administration, PO Box 2150, La Plata, 301-645-0692 (MD Labor page; no name published); CPIS 301-645-0550 (SNIPPET). DLLR Ch 224 amendments (read): geotech-area 4-ft rules w/ PE-report alternative; damage-repair preliminary inspection by BCO; deck footing inspections. RFP 13-03 (2012, read): county contracts private firms for its inspections; check-sheet engineer-cert acceptance verbatim. §224-4 auto-adopts new I-codes July 1 of MD's adoption year; current edition likely newer than the 2018 snapshot; confirm.
Allegany: 301-777-2526 / permits 301-777-5951, 701 Kelly Rd, Cumberland; plans-examiner/building-inspector seat vacant (page read). Pages read: Building Permits ("inspections are conducted by private, third party inspection agencies"), Inspections (phases incl. "foundation/pier & beam"), Building Code (2006 IBC/IRC "2007 Building Code of Allegany County"; SI "mandated by the design consultant"). Cloudpermit portal. County covers unincorporated + LaVale only.

Carroll County MD (added August 2026)

Bureau of Permits & Inspections, Department of Public Works, 225 N Center St, Room 118, Westminster 21157; 410-386-2674, M-F 8-5. Inspectors are in the field 8:00-2:30 and take code questions 7:30-8:00 and 2:30-3:00. Portal: CPPL (Carroll's Permitting, Plan Review and Licensing). Building permits still require in-person submission; only residential solar is online.
Chapter 170 Construction Codes with county amendments (read): https://labor.maryland.gov/labor/build/doc/carroll-code-amendments.pdf · 2018 IBC/IRC/IMC/IPC/IECC/IEBC/IFGC, 2017 NEC, Maryland Accessibility Code; design criteria table gives 30" frost line, 115 mph wind, severe weathering, moderate-to-heavy termite.
Forms library enumerated in full (38 items, read): https://www.carrollcountymd.gov/government/directory/public-works/permits-inspections/permits-forms-and-documents/ · building, electrical, plumbing/gas, fire, solar, pool barrier, erosion control, residential code compliance guidelines. No statement of special inspections, no third-party application, no engineer-certification form. Municipalities inside the county are outside county jurisdiction ("contact them directly").
Gaps/fails: the bureau chief and building official are not named on the site; the Residential Code Compliance Guidelines PDF did not resolve at the path tried; there is no published position on engineer reports either way. Call 410-386-2674. Two projects on the books here, so this is a low-cost call with a clean question: does the county accept a Maryland PE's sealed inspection report at footing and foundation.

City of Frederick MD (added August 2026)

Building/Permits Department (a division of DPW), Municipal Annex, 140 W Patrick St, 4th floor; Chief Building Code Official Dustin Nusbaum, 301-600-3808, dnusbaum@cityoffrederickmd.gov, fax 301-600-3826. Maryland Labor lists the same office as "Division Manager, Building Department", 301-600-3812. Public counter 8-2 M-F; One-Stop Shop same-day permitting Tuesdays 8-11.
Inspection request lines (read): Building 301-600-3819 / 6272 / 3809, Plumbing 301-600-3820/3821, Electrical 301-600-3822/3823, Fire 301-600-3827/3839/6277. Requests by phone 9am-2pm the day prior, or through the OpenGov portal before 2pm for next business day. Permits before 12/11/2023 live in the legacy OpenGov transparency portal.
Effective January 1, 2026 a newly adopted code package applies to applications received on or after that date (VERIFIED on the Building/Permits page).
Gaps/fails: the Building Codes page 404s at the linked path, so the adopted editions could not be retrieved, so get them before writing a code citation on a city job. Nothing published on third-party inspection, special inspections, or engineer certification in lieu; Frederick County's pre-authorization clause does not apply inside the city. Call Nusbaum at 301-600-3808.

Cumberland MD (added August 2026)

City of Cumberland Department of Community Development, 57 N Liberty St, Cumberland 21502; permits 301-722-2000 x5600; Maryland Labor lists Code Compliance Manager, 301-759-6659, fax 301-759-6432; zoning inspections 301-759-6442 / 301-759-6456 (24 hours before excavation).
New Construction Inspection Checklist + Standard Construction Plan Addendum (2022 rev., read): https://ci.cumberland.md.us/DocumentCenter/View/1552/New-Construction-Inspection-Checklist-updated-2022 · the third-party language is on page 1 under Structural: "YOU must contact a qualified inspection agency of your choice." Phases: Footer/Slab (for walls, piers, columns), Foundation/Pier & Beam (complete, moisture-proofed, drain in place with stone cover and filter membrane, before backfill), framing, masonry veneer flashing, insulation, final. All inspection reports go to Community Development before the occupancy permit; structural work not ready at 8:30 a.m. on the arranged day can draw a fee.
Codes (same addendum): 2018 IBC/IMC/IECC, 2017 NEC, 2018 NSPC, 2018 NFPA 101, MBPS per COMAR 05.02.07, Maryland Accessibility Code; city amendments give 36" frost depth, 6" minimum footer thickness, the 30° lateral-support rule for stepped footings, and mandatory damp-proofing plus perforated footer drains around all habitable below-grade space.
Gaps/fails: the code compliance manager is not named; no list of accepted agencies is published (the phrase is "a qualified inspection agency of your choice", with no stated qualification bar, so ask what makes one qualified); and the 2018 package predates the statewide 2021 adoption, so the current edition needs confirming. One project on the books. Call 301-759-6659.

District of Columbia (DOB)

DOB (202) 671-3500, dob@dc.gov, 1100 4th St SW. Chief Building Official Nicole Rogers (per AB 2025-02, Feb 2025).
Third-Party Program page: https://dob.dc.gov/node/1615846 · TPP Procedural Manual (rev. 5/15/2023, 67 pp, read): https://dob.dc.gov/sites/default/files/dc/sites/dob/Third-Party_Program_Procedure_Manual%205.15.2023%20.pdf
Special Inspection Policy Manual (rev. 5/15/2023): https://dob.dc.gov/sites/default/files/dc/sites/dob/Special-Inspection-Policy-Manual%2012.14.2023.pdf (newer file; 4/14/2023 revision also live)
AB 2025-02 (TPSIA underpinning sequence monitoring): https://dob.dc.gov/sites/default/files/dc/sites/dob/Notice%20of%20Administrative%20Bulletin%20205-02.pdf
Retaining-wall permit page /node/1616061 + DCRA 2019-003 checklist PDF; Homeowner's Center /page/homeowners-center
Key mechanics: NOI approved by DOB before work; Tertius mandatory since 11/1/2021; residential/R2-R4 projects cannot use multiple inspection agencies; owner pays TPIA, no permit-fee refund; TPIA excluded from flood-hazard/historic-review work.
Gaps/fails: approved-agency list behind Tertius login (fetches 404/403); CC2015-01 underpinning bulletin text unretrievable (DOB's "CC2015-01" PDF actually contains CC2015-02 neighbor-notification, VERIFIED mislabel). Call.

Fairfax City

Code Administration (under Fire Dept) 703-385-7830, CodeAdministration@fairfaxva.gov, 10455 Armstrong St #208; Steven Sites, Asst. Fire Chief heads the office; "building official" title-holder unpublished.
SSI form (read via proxy): https://www.fairfaxva.gov/files/assets/city/v/1/codes/documents/building-guidelines/city-of-fairfax-statement-of-special-inspections.pdf · Building Guidelines index (incl. Retaining Wall Typical Details, SNIPPET) · city performs its own inspections (footing→final). Call.

Fairfax County + Town of Herndon

LDS Building Division 703-222-0801; 3P program LDSBuildingInspections@FairfaxCounty.gov (application lines 703-631-5101 page / 703-202-5101 policy; confirm which). BO name not published.
3P Residential policy (eff. 7/1/2024, read): https://www.fairfaxcounty.gov/landdevelopment/sites/landdevelopment/files/Assets/documents/pdf/residential-third-party-inspections-policy.pdf · program page /third-party-inspections-program · approved-firms table /third-party-inspectors
SIP manual (2021 ed., rev. April 2026, read): …/2021-special-inspections-program.pdf (Critical Structures Branch 703-222-0801 x324; deep foundation definition includes helical piles/micropiles; mandatory pre-permit Critical Structures meeting)
Forms: six-form set replaced 4/9/2025 (announcement read); Retaining Wall report form read (waterproofing/draintile/damproofing hold points; footer rev-date placeholder). Re-pull all six.
RTW: WALLR page read (>3-<4 ft residential, no surcharge; typical details in lieu of plans); ≥4 ft/surcharge → WALLC.
Herndon: own building dept FIRMED UP 8/2026 (live site is Akamai-edge-blocked; four Wayback captures of the town's own pages, newest 4/2026, did the work). Dept. of Public Works, Building Inspections Section, 777 Lynn St 2nd Fl; 703-435-6850, buildinginspections@herndon-va.gov; 8-5. Codes (VERIFIED-via-archive 4/2026): 2021 I-code suite + 2020 NEC; VA Ch. 34 deleted, existing-building alterations via the Virginia Rehabilitation Code. Permit triggers published: "all additions, all alterations… retaining walls over 3 ft., and detached sheds over 256 sq ft." A "Special Inspections Submittal Form" on the town's own forms list confirms a formal SSI program. Not retrieved: a named Building Official (the staff directory is a JS widget Wayback never captured as text) and the §113.7 written policy. Call 703-435-6850: BO name + the written policy; ask whether inspections are still "virtual" (2023-era page language, likely stale).

Falls Church City

Building Safety 703-248-5080, permits@fallschurchva.gov (Code Administration merges with Zoning 7/1/2026). BO name unpublished.
Major Projects Manual (2021 VCC; pub. 4/1/2025, rev. 12/24/2025, read): https://fallschurchva.gov/DocumentCenter/View/5982/Building-Safety-Major-Projects-Manual: SIER model (owner-retained, city-approved, ASTM E329 agency, WACEL/ACI/etc. field certs); SSI Appendix A/B before permit; Final Report Appendix C before CO; 7-working-day reports to permits@; helical piles + underpinning named; "if a Building Safety inspector is not available, work may proceed based on the results of the SIER's special inspection."
No §113.7 policy published (site mid-migration). Call.

Fauquier County + Town of Warrenton

County: Community Development; inspection hotline 540-422-8230; Soil Scientist 540-422-8240. BO name not published.
3P policy (eff. 12/30/15, read, incl. Approved Agency application): https://www.fauquiercounty.gov/home/showpublisheddocument/8333/638568940835970000 · SI Guidelines (2015 USBC ed., rev. 9/4/19, read): …/7060/637036209696270000 · Shrink/Swell policy + form (rev. 4/18/25, read): https://www.fauquiercounty.gov/home/showdocument?id=7051
Warrenton (own building dept): Community Development (540) 347-2405, permittech@warrentonva.gov. Own 3P policy (same template, read): https://www.warrentonva.gov/DocumentCenter/View/1668/3rd-Party-Inspections-Policy-PDF. Separate Approved-Agency enrollment required.

Frederick County MD (added August 2026)

Department of Permits and Inspections, Division of Planning and Permitting, 30 N Market St, Frederick 21701; 301-600-2313, fax 301-600-2309, planning&permits@frederickcountymd.gov, M-F 8-4. Ashlye Bonomo, department head, 301-600-3463; Staci Rosenberger, Manager of Permitting Services, 301-600-6727; Office of Life Safety and Plan Review 301-600-3353. Portal: https://planningandpermitting.frederickcountymd.gov/
Inspection Procedures + permit cover sheet (issued in every permit packet; read): https://frederickcountymd.gov/DocumentCenter/View/846/Inspection-Procedures · carries the third-party clause verbatim, plus the county's phase definitions (footing "trenches squared out, dry, grade stakes in place, steel properly placed"; backfill "when foundation walls have been parged and dampproofed and drain tile, gravel bed, and red rosin paper cover are in place"). Requests before noon are worked the next business day; two inspections per type before re-inspection fees.
Commercial Projects & Third-Party Inspection Program (TPIP), updated 6/1/2026 (read): https://www.frederickcountymd.gov/DocumentCenter/View/372404 · do not cite this one for foundation work: it is built on NFPA 70 §90.4(C) and covers commercial electrical inspection and electrical plan review, threshold $200,000, inspectors authorized by the Maryland State Fire Marshal's Office, administered by the Electrical Inspections Section.
Gaps/fails: the Building Code Official is never named in either document (referred to only as "the BCO"); there is no published list of pre-approved agencies or individuals and no application form for structural pre-authorization; the current adopted code edition is not stated on the pages read. Call 301-600-2313 and ask how a pre-authorization request is made and what the BCO wants to see with it.

Frederick County VA / Winchester City / Clarke / Warren (+ Front Royal)

Frederick: BO Mark Fleet, (540) 665-5650 opt 1, mfleet@fcva.us, 107 N Kent St. Dept pages + Local Design Criteria + commercial SI doc (rev. 01/2025) all read: https://www.fcva.us/departments/building-inspections. No 3P policy online.
Winchester: 540-667-1815, Rouss City Hall; staff Tom Mayhew / Richie Fletcher (emails published); BO title-holder unpublished. Footing & As-Built Survey form (read): https://www.winchesterva.gov/files/assets/public/v/1/community-development/building-and-inspections/footing_as_built_survey_form.pdf. OpenGov portal.
Clarke: BO Brian Riston, (540) 955-5176, briston@clarkecounty.gov; permits 540-955-5112. Shrink Swell Soils Policy (read; Option 1 = engineer on-site inspections per Ord. §71-6): https://www.clarkecounty.gov/home/showpublisheddocument/1708/637022515658300000 · "When to apply for a permit" (repair of any structural component = permit; read) /12712. Berryville/Boyce covered by county.
Warren: BO David Beahm, (540) 636-9973, dbeahm@warrencountyva.gov; inspections@warrencountyva.gov. Residential app (rev. 9-4-18, read; PIERS checkbox): https://warrencountyva.gov/DocumentCenter/View/127/… · Front Royal shrink/swell policy (read, currency caveat): https://www.frontroyalva.com/DocumentCenter/View/2864/… · MDIA electrical outsourcing (forms /2482, /142). County covers Front Royal (town does zoning only, 540-635-4236).

Frostburg MD (added August 2026)

City of Frostburg Community Development, 37 Broadway, 2nd floor; Planner Jamie Klink, 301-689-6000 x105; Code Enforcement Officer / Rental Housing Inspector Jay Hovatter, x109; City Administrator's office, PO Box 440, 301-689-6000. Portal: City of Frostburg Permit Portal (pre-submittal application, then staff contact).
Building Permits page (read): https://www.frostburgcity.org/1231/Building-Permits · zoning review by the Planner, then "plans are transmitted to MEGCO Inspections for plan review" (7-10 working days), then "all inspections must be scheduled through MEGCO Inspections", 24 hours ahead, 800-304-5942. Permit triggers include major renovations involving structural changes, retaining walls 30" or more above grade or any wall retaining a parking area, and there is a dedicated Retaining Walls plan-review requirements sheet. Commercial and multifamily plans must be sealed by a design professional.
Gaps/fails: the Adopted Building Codes document behind https://www.frostburgcity.org/1223/Adopted-Codes was not retrieved, so the editions are unknown; MEGCO's contract scope and whether an applicant may propose a different agency are unpublished; no third-party election exists on paper because MEGCO already is the third party. Zero job history here: this dossier exists to complete the Allegany book, and the call (301-689-6000 x105) is worth making only alongside the Cumberland and Allegany ones.

Gaithersburg MD (added August 2026)

Planning & Code Administration, Permits & Inspections, City Hall, 31 S Summit Ave; 301-258-6330, permitting@gaithersburgmd.gov, M-F 8-5. Maryland Labor lists the code contact as "Senior Plans Examiner/Building Official", name not published. Inspection requests: online only through the city portal, before noon the preceding business day; the automated inspection line has been retired. Overtime requests need 48 hours.
Certified (Third-Party) Inspections Program, City Code Ch. 5 Art. I §5-3, IBC amendments 104.4.1 and 104.4.2 (read in full): http://gaithersburg-md.elaws.us/code/coor_ch5_arti_sec5-3 · owner-employed firm, independent of designer and contractors, no financial interest, approved by the building official project by project; inspections under the direct supervision of and certified by a Maryland-licensed RDP with MD/ICC-credentialed field inspectors; reports accepted in lieu of city inspections; city monitors quality and can pull approval. Exceptions: Special Inspections Program work, new R-3/R-4 IRC construction, fire systems, other agencies' inspections.
Same code section adopts IBC Ch 17 with teeth: 1704.2 Exception 4 deleted, concrete Exceptions 1 and 2.3 deleted, Table 1705.3 items 10 and 11 moved from periodic to continuous, adhesive anchors in tension to be installed by an ACI/CRSI certified installer, and "retaining walls" added to the §1705-series scope language.
Gaps/fails: the city's own site blocks automated fetching entirely (Akamai 403 on every page; everything above came from the elaws code mirror and a reader proxy). Not retrieved: the building official's name, the Special Inspections Program document referenced by the exception, any application form or approved-firm roster for the Certified Inspections Program, and confirmation of how the R-3/R-4 exception reads against repair work on an existing dwelling. That last one is the whole question, so call 301-258-6330 and get it in writing.

Loudoun County

Building & Development 703-777-0220 opt 1; 3P contact Catie Mallon; Director Betsy Smith; BO name unpublished.
Program page: https://www.loudoun.gov/2647/Third-Party-Building-Inspection-Program · Overview PDF (rev. 12/04/2013, read; stale but live program): https://www.loudoun.gov/DocumentCenter/View/141852/… · Request form /141854 + Certification form /141853 (SNIPPET) · LandMARC report submission /215671
Conflict noted: 2013 PDF demands original wet seal ("Faxed and emailed certifications are not acceptable") vs. current page's LandMARC online submission. Follow the page; confirm by phone.
Issued-permit reports show pier/sump residential permits in the wild (SNIPPET). Leesburg/Purcellville: town zoning permit first, county building permit.

Manassas City

Development Services 703-257-8278, 9027 Center St Rm 201; BO Eric Lowe, 703-257-8273, elowe@manassasva.gov (Wayback-verified city page).
Permits page (Wayback 11/2025): third-party accepted from approved list → "2025 Third Party Inspectors - BTO.pdf": link verified, content unretrievable (403 + no archive). SI Form link likewise unreadable.
CO Procedures (read): RDP/SER-sealed "Final Statement of Inspections" + all 3P reports required at CO; references 2012 VUSBC (stale handout).
Call Lowe: get the list + application route.

Manassas Park VA (added August 2026)

City of Manassas Park, Development, Zoning and Code Enforcement Services (Development Services Division), 9701 Manassas Dr, Manassas Park 20111, M-F 8:30-4:30. Inspections 703-335-8815, minimum 24-hour notice, M-F 9-4, no same-day inspections. Calvin O'Dell, Director of Community Development and Public Works; Michelle Barry, Planning and Zoning Administrator (SNIPPET for both).
Pages read: Building Permits and Inspections; Scheduling Inspections; Do I Need a Permit: the city enforces the VUSBC directly and publishes its permit triggers plainly: additions, garages, finishing a basement, all retaining walls over 24", any retaining wall of any height carrying surcharge from a structure, road, driveway or sidewalk above, and removing or altering any structural or non-structural members. Tiered retaining-wall systems count as one wall for the 24" test. Rental properties need a certificate of compliance under City Code §31-45(c).
Gaps/fails: no building official is named anywhere on the city site (the older cityofmanassaspark.us domain is a stale mirror and should not be quoted); no §113.7 third-party policy, no SI form, no required-inspections list and no permit-fee schedule are published. Virginia law requires that written §113.7 policy to exist regardless. Call 703-335-8815, ask for the building official by name, and request the written third-party inspection policy. Four projects on the account and no site visits, so this is a recapture call, not a maintenance call.

Montgomery County (DPS)

MC311 240-777-0311; 2425 Reedie Dr, Wheaton. Complex Structures Manager Alex Bernal (SI manual contact list).
RSIP program doc (rev. 8/4/2025, read): https://assets.montgomerycountymd.gov/files/2026-04/ResidentialSpecialInspectionsProgram.pdf · cert form ("Residential SIR"): …/ResidentialSpecialInspectionReportCertification1.pdf · application: …/ApplicationforAuthorizedIndividualsResidentialSpecialInspectionProgram.pdf · approved list: https://permittingservices.montgomerycountymd.gov/DPS/online/ResidentialSpecialInspectors.aspx (~300+ inspectors)
SI Program Manual (IBC 2021, rev. 3/28/2025, 54 pp, read): https://assets.montgomerycountymd.gov/files/2026-04/SpecialInspectionProgramManual.pdf
Residential required-inspections notice (rev. 1/6/2023, read): RSI-eligible = 001 footings / 002 waterproofing-drainage / 011 slab only.
RTW process page read (permit >3 ft; >7 ft → SIP; 402 rebar/deadman/geogrid = DPS-only).
Action: get Valerio (MD PE) and/or Diehl (MD architect) DPS Inspector Numbers; free, no expiration. Ask how residential pier underpinning is routed (RCFCC vs. commercial-division underpinning permit).

Page / Rappahannock

Page: BO James Campbell, jcampbell@pagecounty.virginia.gov; 540-743-6674, pagebnz@pagecounty.virginia.gov, 103 S Court St, Luray. Permit app (read; "Foundation Only"/"Remodel-Repair" checkboxes): https://www.pagecounty.virginia.gov/DocumentCenter/View/3149/…. Required-inspections list only handed out at permit issuance. No 3P/SI docs online (full forms library enumerated).
Rappahannock: BO Richard S. Cornell, (540) 675-5344; office 540-675-5340, building@rappahannockcountyva.gov, 311 N Gay St, Washington VA. 3P policy (eff. 7/16/2024, read): https://cms9files.revize.com/rappahannockva/Rappahannock%20County%20Third%20Party%20Building%20Inspection%20Policy_240716.pdf: 48-hr trigger, VA RDP qualifies, 5-day reports on county Statement form (form not online), "no direct relationship with the project" clause. County office also serves Town of Washington. Permit app read (new-construction-shaped).

Prince George's County (DPIE) + City of Laurel

TPIP: Associate Director, Inspections Division, 9200 Basil Ct, 3rd Fl Rm 307, Largo; program line (301) 883-3820; permits 301-636-2050; scheduling IVR 301-755-9000; eplan@co.pg.md.us. TPIP-R precon: Darrell Terry / Omobola Sokoya (page-published names).
TPIP Manual (eff. 11/6/2020, read via Wayback): https://www.princegeorgescountymd.gov/sites/default/files/media-document/dcv4338_third-party-inspection-program-tpipmanual-pdf.pdf · 2026 edition exists (URL surfaced; 403, unread); get it by phone
TPIP-R page (Wayback 6/2026): …/inspections/residential-building-inspections · Commercial 3P page (Wayback 5/2026): …/inspections/commercial-inspections · Retaining-walls page (Wayback 4/2026): <2 ft exempt
PG site blocks non-browser clients; all "VERIFIED (archived)" with capture dates in the agent report.
Laurel (own office): FMPS 301-725-5300 x2238; Ordinance No. 2025 (Ch. 18, read): https://www.cityoflaurel.org/DocumentCenter/View/2580/Ordinance_No_2025-Chapter-18-Building-Code- ; Inspections page: https://www.cityoflaurel.org/1495/Inspections ; no plumbing permits (WSSC).

Prince William County

Building Development, 5 County Complex Ct #120; BO Eric M Mays, PE (policy signature). 3P enrollment 703-792-7006; main 703-792-6930; Special Inspections 703-792-6112, SpecialInspections@pwcgov.org.
Program page: https://www.pwcva.gov/department/building-development-division/third-party-inspections-program/ lists four programs (Building Certification / Leftover Inspections / Minor Critical Projects / Special Inspections).
Policy (rev. 5/1/2025, read): https://www.pwcva.gov/assets/2024-02/PP-ThirdPartyBuildingInspectionCertificationProgram.pdf · Cert form v2025-05-01 (via proxy): https://eservice.pwcgov.org/ebuildingdevelopmentforms/forms/BuildingInspectionCertification.pdf
SI applicability page (deep foundations/helical named; RTW >8 ft or 4-8 ft w/ surcharge): https://www.pwcva.gov/department/building-development-division/when-are-special-inspections-applicable · SIM: /assets/2021-04/001501.pdf (SNIPPET) · SSI Buildings + SSI Retaining Walls + Final Report forms on eservice (SNIPPET) · approved-3P-engineers list /assets/2021-04/003532.pdf (SNIPPET)
Soils: Soil Categories handout (2009; 91 units → Cat I/II/III; read): /assets/2021-04/005788.pdf · Expansive Soil policy (2009, read): /assets/2024-02/PP-Soils-ExpansiveSoils.pdf
Actions: confirm Valerio/Diehl enrollment + seminar attendance since the May 2025 revision; swap pipeline form to v2025-05-01; ask whether helical repairs ride the voluntary program or get pushed to SI.

Queen Anne's County MD (added August 2026)

Permitting & Zoning, 110 Vincit St, Suite 104, Centreville 21617; 410-758-4088, fax 410-758-3972, M-F 8-3:30. Zoning Administrator Vivian J. Swinson is the only named official published. Portal: PZ Citizen Self Service.
Inspections are performed by MDIA: Middle Department Inspection Agency, 8673 Commerce Dr Unit 2, Easton 21601, 410-822-8300, M-F 7:30-4, for building, plumbing, electric, gas and mechanical. Owner or agent calls 24 hours ahead; MDIA has 24 hours to perform.
Requirements for a Residential Building Permit (read): https://www.qac.org/DocumentCenter/View/23741/Residential-Assistance-Bulletin · required inspections are Footing (after trench excavation, before pour; benchmark and crawlspace elevation checked in a flood hazard area), Foundation (complete, before backfill and framing), framing, insulation, final; re-inspection $50; U&O from the Zoning Department after finals.
Chapter 10 Construction Codes with county amendments (read): https://labor.maryland.gov/labor/build/doc/queenannes-code-amendmentsts.pdf · adopts the MBPS; deletes IBC 110.3.2, 110.3.3 and 110.3.5 and renumbers; rewrites the foundation inspection around anchors, vents and termite shield; adds 110.7 withholding of inspections; "Department of Building Inspection" means the Department of Planning and Zoning.
Gaps/fails: no building official is named on any county page; the "Current Building Codes" page did not resolve, so the live code edition is unconfirmed (the ordinance text on file still references 2015 editions while the MBPS moves under it); no third-party pathway is published anywhere: MDIA is the county's agency, not an open roster. Call 410-758-4088 for the official's name and current editions, and 410-822-8300 to ask MDIA directly how an engineer's sealed report is handled.

Rockville MD (added August 2026)

Community Planning & Development Services, Inspection Services Division, Rockville City Hall, 111 Maryland Ave; 240-314-8240, permits@rockvillemd.gov, M-F 8:30-5; fax 240-314-8265. Portal: MGO Connect (rockvillemd.gov/mgoconnect) for all building and development permits.
Special Inspections Program (posted 10/2025, read in full): https://www.rockvillemd.gov/wp-content/uploads/2025/10/Special-Inspections-Program.pdf · Statement of Special Inspections Agreement (Parts 1-2), Schedule (Part 3), Forms A1-A5. Pile Foundations, Pier Foundations, Soil Conditions as named categories; helical piles §1705.9 continuous; driven and cast-in-place deep-foundation test schedules; §1705.10 integrity testing (ASTM D4945/D5882/D6760/D7949).
Building & Safety Codes page (read): https://www.rockvillemd.gov/services/building-and-safety-codes/ · 2021 IBC/IRC/IPMC/IPC/IMC/IFGC/IECC/IEBC + 2023 NEC + 2015 IgCC effective 5/29/2024 under an ordinance adopted 5/20/2024, detailed in Administrative Bulletin 2024-01; Chapter 9 fire-code update (2024 NFPA 1/101) effective 1/15/2026. Residential submittal requirements: /wp-content/uploads/2025/10/Residential-Building-Permit-Submittal-Requirements.pdf
Gaps/fails: the chief building official is not named anywhere published: Maryland Labor lists the title ("Chief, Inspection Services Division") without a name; Administrative Bulletin 2024-01 not read; Chapter 5 of the city code is not retrievable (Municode blocks automated fetching); no approved-special-inspector roster is published; and the program is written entirely in IBC language, so its reach onto IRC-side residential repair is unconfirmed. Call 240-314-8240 for the official's name, the roster, and the residential answer.

Shenandoah County

Building Dept 540-459-6185, 600 N Main St #107, Woodstock; BO Tim Ferguson, Tferguson@shenandoahcountyva.us.
3P policy (since 9/3/2019, read): https://www.shenandoahcountyva.gov/DocumentCenter/View/896 · county 3P report form /897 · SI Guidelines (2012 regional-template, read pp. 1-8): https://va-shenandoahcounty.civicplus.com/DocumentCenter/View/904/… · permit exemptions (RTW <3 ft, read) /925
Scope: third-party for footings/slabs/concrete walls/backfill-drainage only (published list); ask whether specialty pier work can extend it.

St. Mary's County (LUGM)

Director, LUGM, 301-475-4200 x1500; Inspections Coordinator x1580; eTRAKiT portal.
CAG-21 Commercial Inspections (read; contains the amended IBC §110 text + agency roster): https://www.stmaryscountymd.gov/docs/CAG-21%20Commercial%20Inspections.pdf · CO guide CAG21.pdf (read) · Inspections page /lugm/inspections/
Named agencies: MDIA (Hollywood MD, 301-884-4547), PLANCHEK (Waldorf, 301-870-8710), CECA (Lanham, 301-967-1718).
Gap: IRC-side residential applicability of §110.4 INFERRED (Municode Ch 203 blocked). Call: get Valerio onto the qualified-inspector list / confirm §110.2.2 sealed-report lane for pier jobs.

Town of Indian Head MD (added August 2026)

Town of Indian Head, 4195 Indian Head Highway, Indian Head 20640; 301-743-5511, fax 301-743-9008, and Maryland Labor lists the Town Manager as the code contact. Planchek, Inc. administers the building code for the town (same contract family as Charles County since 1997 and La Plata), Waldorf, 301-645-3302. Charles County Planning & Growth Management, 200 Baltimore St, La Plata, 301-645-0550; county Permits Center 301-645-0692.
RESOLVED 8/2026, flag goes FIRM. The town's Building Code article (ecode360.com/15028655) was fetched and read in full via headless Chromium: §170-1 adopts the IBC 2018 as the town's own code; §170-2 runs ~40 local amendments including the Building Official designation and the county's PE-geotechnical-report-in-lieu-of-4-ft-footing-depth opt-out written directly into town code; §170-4 (2021) incorporates Charles County's Standard R1-R9 condition sheets. The town issues; Planchek administers. Building Official/Code Enforcement Officer: Planchek's Steve Tackish (town-designated; Town Manager Ryan Hicks; VERIFIED, planchekinc.com/indian-head). The intake split was a phantom: MD Labor's "Town Manager" listing is the statutory designating authority, not the operational one.
The check-sheet question is also resolved: Planchek's published engineering-certificate requirements apply to Indian Head (VERIFIED, planchekinc.com/engineering-certificate-requirements): PE certification accepted for footing, wall, backfill, slab; notify Planchek when scheduling; deliver engineering documents before vertical framing; cert must carry date, permit number, address, scope, MD engineer's seal, with the exact required attestation language published verbatim. This is squarely UP's product.
Remaining gaps: codified 2018 base vs Planchek's "2021 cycle since 6/28/2024" adopted-codes page (currency gap, one question); whether the primary Building Permit files at Town Hall or Planchek directly (town's Planchek page lists trade forms only). Five projects here. Call 301-743-5511 or Tackish via 301-645-3302.

Town of La Plata MD (added August 2026)

Town of La Plata Department of Planning, Town Hall, 305 Queen Anne St, PO Box 2268, La Plata 20646; 301-934-8421, fax 301-934-3965, permits@townoflaplata.org. Maryland Labor lists the code contact as "Town Inspector, Town of La Plata." Code administration is contracted to Planchek, Inc., 6C Industrial Park Dr, Waldorf, 301-645-3302 (the town's own page gives 301-870-8710 for Planchek), M-F 7:30-4:30; electrical and mechanical applications go straight to Planchek.
Adopted codes (Planchek, read): https://www.planchekinc.com/adopted-codes · 2021 IBC/IRC/IEBC/IMC/IFGC/IPC/IECC/IPMC and 2020 NEC adopted 6/28/2024, over the earlier 2018/2017 package; Planchek administers the identical set for Charles County and Indian Head.
Building Permit Package Checklist (read): https://www.townoflaplata.org/DocumentCenter/View/739/Building-Permit-Checklist-PDF · plans must show compliance with the IBC and Fire Code, a design professional's stamp is required for new residential and all commercial, and grading, sediment-and-erosion and stormwater approvals come before the building permit.
Gaps/fails: Chapter 75 (Building Construction) of the town code could not be retrieved: Municode returns 403 to automated clients and the elaws mirror timed out, so whether the ordinance says anything about accepting outside inspections is unknown; the town inspector is not named; and it is unclear whether Planchek runs the same engineer-certification check-sheet practice inside town that it runs for Charles County. Thirteen projects and three site visits here, our third-busiest of the twelve. Call the town at 301-934-8421 and Planchek at 301-645-3302.

Town of Leonardtown MD (added August 2026)

Town Office of Planning and Zoning, PO Box 1, Leonardtown 20650; Maryland Labor lists Code Enforcement Officer, Town of Leonardtown, 301-475-9791, fax 301-475-5350. Zoning permits issue from the Town Administrator or Town Planner and authorize the other permits.
This is its own AHJ, not St. Mary's County. Town code Ch. 48 designates a Building Code Official within the Office of Planning and Zoning and provides that inspections "shall, in the first instance, be arranged through the Leonardtown Office of Planning and Zoning by contract with an independent inspecting agency. Such inspections may also be conducted by various personnel employed by or assigned to the Office of Planning and Zoning" (VERIFIED 2026-08-11, live Ch. 48 text read via headless Chromium: https://ecode360.com/9914333).
Ordinance No. 172, Chapter 48 Building Construction, adopted 2015 (retrieved and OCR'd; the file is a scan with no text layer): https://leonardtown.somd.com/OLDSITE/government/Ltown-Ord172.pdf · adopts the current MBPS (IBC + IRC + IECC per COMAR 05.02.07, as amended from time to time) and writes local inspection amendments on both paths: 110.3.1 footing / 110.3.2 concrete foundation wall / 110.3.3 slab / 110.3.4 foundation steel / 110.3.5 foundation backfill "prior to back filling… to verify drainage and water proofing systems", mirrored at R109.1.1-R109.1.5 plus R109.1.7 structure tie-down.
Gaps/fails: the code official is not named, the identity of the contracted inspecting agency is not published, the live Ch. 48 text could not be fetched, and Ordinance 172 is a 2015 instrument whose currency is unconfirmed (its hold points 110.3.1-.5 and R109.1.1-.7 re-verified against a fresh OCR of the scan, 2026-08-11). County work outside the town limits goes to St. Mary's LUGM, 301-475-4200 x1500. Call 301-475-9791 and ask two things: who inspects for the town, and what they need from a Maryland PE.

Basic Info