10.4 Building Codes and Permits in Maryland

The Code Framework: Maryland Building Performance Standards

Maryland does not write its own building code from scratch. The Maryland Building Performance Standards (MBPS), codified at COMAR 05.02.07, adopt the model codes published by the International Code Council (ICC) with Maryland-specific modifications. The core adoptions are the International Building Code (IBC) for commercial and larger structures, the International Residential Code (IRC) for one- and two-family dwellings and townhouses — the code that governs most home-improvement work — and the International Energy Conservation Code (IECC). The ICC publishes new editions on a three-year cycle, and Maryland's adoption typically trails the newest edition, so the edition in force locally may differ from the latest book on the shelf.

Two structural facts matter for the exam. First, the MBPS applies statewide as a floor: every jurisdiction in Maryland enforces at least the state-adopted code, and local governments may adopt amendments, generally in the direction of greater stringency to suit local conditions. Second, the MBPS is not administered by MHIC. MHIC is a consumer-protection licensing scheme; code enforcement is a separate layer run by local government. A job can be perfectly licensed and still violate the building code — and vice versa.

Adjacent codes a home-improvement contractor encounters: the National Electrical Code (NEC, NFPA 70) governs electrical work, and in Maryland electrical inspections are commonly performed by state-certified third-party electrical inspection agencies rather than county staff; plumbing and mechanical work follows the adopted plumbing and mechanical codes, which can vary by jurisdiction. When a question asks who enforces the building code on a kitchen remodel in a Maryland county, the answer is the county (or Baltimore City) permitting and inspections authority, not MHIC and not the state.

Permits and the Inspection Sequence

Building permits are issued locally — by the county permitting agency (for example, a county department of permitting services or inspections) or, in Baltimore City, by the Department of Housing and Community Development. Work in home improvement that commonly requires a permit includes:

• Additions and any structural alteration (removing or cutting load-bearing walls, new headers, dormers),
• Decks and porches,
• Finished basements and attic conversions,
• Electrical, plumbing, and HVAC work (trade permits, often pulled by licensed trade subcontractors),
• Window and door replacements where openings are resized, and roofing or siding in many jurisdictions.

Work that is generally exempt is cosmetic: painting, wallpapering, flooring, cabinets and countertops, and minor like-for-like repairs. Exemption lists vary by jurisdiction — the safe professional habit, and the safe exam answer, is to verify with the local permitting office before starting, not to assume.

A typical residential project moves through inspections in this order:

1. Footing inspection — before concrete is placed, verifying depth, bearing soil, and reinforcement.
2. Foundation inspection — walls, waterproofing, and anchor bolts before backfill.
3. Rough trade inspections — framing, electrical, plumbing, and mechanical rough-ins while everything is still open. Framing is typically signed off after the trades' rough-ins pass.
4. Insulation inspection — before drywall conceals the thermal envelope (an IECC checkpoint).
5. Final inspections — building and each trade.
6. Certificate of occupancy (CO) — issued when the work passes, required before new or converted habitable space is legally occupied.

The golden rule: never cover work before its inspection. Drywall hung over uninspected framing or wiring can be ordered opened at the contractor's expense. Permits also carry time limits — work must start and progress, or the permit can expire and require re-issuance. Many Maryland jurisdictions require the contractor's MHIC license number on the permit application, which ties code compliance directly to the license.

Why Unpermitted Work Is a Business Killer

Homeowners sometimes push contractors to skip the permit to save the fee or avoid triggering a reassessment. The exam, and MHIC enforcement, treat the contractor as the professional who should refuse. Consequences of unpermitted work:

• Stop-work orders posted on the site, halting the job and blowing up the schedule.
• Penalty fees — many jurisdictions charge double or more of the standard permit fee for after-the-fact permits.
• Removal orders — work that cannot be inspected (concealed wiring, buried footings) may have to be opened or torn out entirely at the contractor's cost.
• Resale problems — unpermitted additions surface in appraisals, title work, and Maryland's residential disclosure process, and can kill or reprice a sale.
• Insurance exposure — carriers can deny claims arising from unpermitted or non-code-compliant work.
• MHIC discipline — performing home improvement work without required permits, or misrepresenting that permits were obtained, is grounds for license suspension or revocation, and a homeowner harmed by the misconduct can file a claim against the MHIC Guaranty Fund.

Worked Scenario

A contractor builds a rear deck in a Maryland suburb without a permit. The footing depth was never inspected; two years later the deck ledger pulls away and a guest is injured. Stack the liabilities: the county issues a violation and orders an after-the-fact permit with penalty fees and an engineered inspection; the insurer contests the liability claim because the structure was unpermitted; the homeowner files a complaint with MHIC, which disciplines the license; and the Guaranty Fund claim and civil suit follow. Every dollar saved on the permit fee is spent many times over.

Exam Traps

• The state adopts the code (MBPS); the local jurisdiction enforces it and issues the CO. Questions asking who issues a building permit in Maryland want the county or Baltimore City, not MHIC and not the Department of Labor.
• Insulation is inspected before drywall, and footings before concrete — sequence questions hinge on what must still be visible.
• A certificate of occupancy applies to new or changed habitable occupancy; a like-for-like kitchen remodel normally closes out with final inspections, not a CO.