Baltimore, Maryland Building Permits
Learn Baltimore, Maryland building permit requirements, fees, timelines, zoning, inspections, and code rules for residential and commercial projects citywide.
Wind
ASCE 7 basic wind speed: typically 115 mph ultimate 3-second gust for Risk Category II buildings in Baltimore; final design must confirm exposure category, topographic effects, risk category, and site conditions.
Snow Load
Ground snow load: commonly about 25 psf for Baltimore-area design, subject to the adopted code, ASCE 7 maps, and site-specific conditions.
Flood
Baltimore participates in the National Flood Insurance Program. FEMA-mapped flood hazards are concentrated along the Patapsco River, Inner Harbor, waterfront areas, and stream corridors such as Gwynns Falls, Jones Falls, and Herring Run. Work in FEMA Special Flood Hazard Areas may require floodplain review, elevation certificates, flood-resistant materials, lowest-floor elevations, and substantial improvement/substantial damage analysis.
Earthquake
Seismic design is generally low to moderate in Baltimore, commonly Seismic Design Category B for many Risk Category II buildings on typical sites, but the final category must be determined from ASCE 7 using mapped seismic values, site class, risk category, and building system.
Wildfire
Wildfire risk is generally low in Baltimore’s dense urban environment. Special wildland-urban interface construction requirements are not usually a primary permit driver, but properties next to large wooded parks or open space may need to address defensible space, fire access, and exterior ignition-resistant practices where required by the fire code or site conditions.
Building Department
Baltimore City Department of Housing & Community Development (DHCD), Permits and Building Inspections
Approval Timeline
Minor residential permits and simple trade permits may be issued in a few business days if the application is complete. Residential additions, decks, structural repairs, and interior alterations commonly take 2-4 weeks for review. Commercial tenant improvements, mixed-use work, changes of occupancy, food service spaces, and projects requiring fire, zoning, health, accessibility, or historic review often take 4-8+ weeks, especially if plan corrections are required.
Common Requirements
Typical submittals include a completed permit application, property address and owner authorization, construction drawings to scale, site plan or plat, floor plans, elevations, wall sections, structural details, energy code information, and contractor license information. Projects may also require MEP drawings, fire protection drawings, COMcheck/REScheck energy documentation, sediment and erosion control approval, stormwater information, asbestos documentation for demolition, lead-safe work practices, and CHAP approval for designated historic properties or districts.
Zoning Information
Baltimore uses the Baltimore City Zoning Code, commonly known as Transform Baltimore. Zoning regulates permitted uses, density, lot coverage, setbacks, height, parking, signs, accessory structures, and changes of occupancy. Residential, commercial, industrial, mixed-use, waterfront, and transit-oriented districts have different standards. Many projects require zoning review before or during building permit review, and variances, conditional uses, nonconforming uses, or appeals may go to the Board of Municipal and Zoning Appeals. Properties in local historic districts may require Commission for Historical and Architectural Preservation review.
Permit Costs
Baltimore permit fees are generally based on project type, valuation, size, and required reviews. Small residential repair or trade permits often fall in the $50-$300 range. Decks, porches, interior alterations, and residential additions commonly range from a few hundred dollars to $1,500+ depending on valuation and scope. Commercial permits, tenant fit-outs, changes of occupancy, fire protection permits, and large projects can cost several thousand dollars. Additional fees may apply for plan review, zoning review, fire review, inspections, demolition, right-of-way work, utility connections, and reinspection.
Engineering Requirements
A Maryland licensed design professional is commonly required for new commercial buildings, commercial tenant fit-outs, structural alterations, underpinning, major foundation work, retaining walls, complex masonry repairs, changes of occupancy, and residential work outside prescriptive IRC limits. Engineer-sealed drawings may be required for load-bearing wall removal, beams, columns, decks with unusual spans or heights, rooftop equipment, solar arrays, fire-damaged structures, and repairs to rowhouse party walls or foundations.
Local Code Adoption
Baltimore enforces the Maryland Building Performance Standards and Baltimore City local amendments. Maryland’s statewide model codes are based on the 2021 IBC, 2021 IRC, 2021 IECC, and related International Codes, with local amendments and separate fire, zoning, electrical, plumbing, mechanical, accessibility, and energy provisions. Applicants should verify the current local code edition and amendments before final design.
Typical Projects
Common Baltimore permit projects include rowhouse renovations, porch and deck repairs, basement conversions, kitchen and bath remodels, rooftop decks, structural beam replacements, commercial tenant fit-outs, restaurant build-outs, mixed-use conversions, change-of-occupancy permits, façade repairs, demolition, fire restoration, sprinkler and fire alarm work, and historic district exterior alterations.