A building permit in the District of Columbia is issued by the Department of Buildings, the single building authority for the whole city, which administers the DC Construction Codes and routes historic and federal design review through the permit itself. A DC-licensed contractor and the separate systems permits run alongside the building permit.
The District rewards knowing the overlays first. The Height Act sets the envelope, a historic district adds design review inside the permit, and a project near the monumental core can draw the federal design boards — all of it settled through the Department of Buildings rather than as separate errands. A DC-licensed contractor and the separate electrical, plumbing and mechanical permits round out the picture.
This guide covers the District of Columbia as a whole. The Department of Buildings is the single building authority for the city; there is no separate local building department, and requirements do not change from one neighbourhood to the next, though overlays such as historic districts and federal review areas do.
Know the overlays before you design. Because the Height Act, historic-district review and federal design review are all settled inside the Department of Buildings permit, establishing which of them touch the parcel before design is the single biggest time-saver on a District project.
What requires a building permit in Washington, DC?
In the District of Columbia, one agency regulates construction citywide. The Department of Buildings — created in 2022 when the former Department of Consumer and Regulatory Affairs was split — issues building permits, reviews plans, inspects construction and enforces the DC Construction Codes across the entire District. There is no separate municipal or sub-District building department: the District is a single jurisdiction, and the Department of Buildings is its building authority. A permit means a Department of Buildings permit that carries the DC Construction Codes, the federal Height Act, and the historic and federal design review the District is known for.
What sets the District apart is the layer of federal and preservation review above the building code. The federal Height Act caps building height against the width of the adjacent street — which is why the District has no conventional skyscrapers — and construction in the District's many historic districts is reviewed by the Historic Preservation Office as part of the permit itself, with the Old Georgetown Board and the Commission of Fine Arts weighing in near federal interests. The Department of Buildings routes an application to these sister reviewers automatically, so the permit and the design review move together rather than as separate errands.
Typically permit required
- Compliance with the federal Height Act, which caps building height against the width of the adjacent street
- The DC Green Construction Code for a new building or substantial improvement of ten thousand square feet or more
- A Department of Buildings building permit for new construction, additions, alterations, demolition and most structural or systems work
- Historic Preservation Office review, routed within the building permit, for exterior work in a historic district
- A DC-licensed contractor, with the specific trade licence for electrical, plumbing or mechanical work
- A public space permit from the District Department of Transportation to build or place structures in public space
Often exempt
- A federal permit for private construction on private land — the federal design boards review design near federal interests, but the Department of Buildings issues the building permit
- Minor work the DC Construction Codes place below the permit threshold, where zoning still applies
- A separate historic-preservation permit — the Historic Preservation Office clears the building permit itself, so there is no standalone preservation certificate to file
One District, one building authority
Because the District of Columbia is a single federal district rather than a state divided into local governments, there is just one building authority: the Department of Buildings regulates construction everywhere within the city, and requirements do not change from one neighbourhood to the next the way they do across the District line. What does change is the overlay: a parcel in a historic district, near a federal viewshed, or within the Georgetown review area carries additional design review, and a project touching public space adds a District Department of Transportation permit. The Height Act keeps the city low and the historic review keeps its character intact, and both are settled inside the permit rather than alongside it — which is exactly why knowing which overlays touch the parcel before you design saves the most time in the District.
Who handles permitting in Washington, DC?
The District of Columbia is served by the Department of Buildings, which issues building and systems permits, reviews plans, inspects construction and enforces the DC Construction Codes citywide. Business and trade licensing runs through the Department of Licensing and Consumer Protection; historic and federal design review is routed through the building permit.
| Detail | Information |
|---|---|
| Authority | District of Columbia Department of Buildings |
| Headquarters | 1100 4th Street SW, Washington, DC 20024 |
| Phone | (202) 671-3500 |
| Codes | The DC Construction Codes (2017 edition, on a 2015 model-code base) |
| Online review | ProjectDox plan review; a Digital Walk-Through for small projects |
Permit types
Residential permits
Houses, row-house additions, alterations, decks and demolition are permitted through the Department of Buildings under the DC Construction Codes. Exterior work on a property in a historic district is reviewed by the Historic Preservation Office as part of the same permit, the contractor must be licensed in the District, and a certificate of occupancy closes a change of use. Small projects can move through the Digital Walk-Through for a one-day online review.
How DC contractor and trade licensing works
Contractors working in the District must hold the appropriate DC licence, and the trades are licensed by specialty: only a licensed DC electrical, plumbing or mechanical contractor may pull the corresponding systems permit. Business and professional licensing runs through the Department of Licensing and Consumer Protection — the other half of the former Department of Consumer and Regulatory Affairs — while the construction permit itself is the Department of Buildings' domain. A home-improvement contractor doing residential work must be licensed and bonded.
Commercial permits
Commercial and multi-family projects are reviewed under the DC Construction Codes through ProjectDox, with the DC Green Construction Code applying to new buildings and substantial improvements of ten thousand square feet or more. The Height Act governs massing, projects near federal property draw Commission of Fine Arts or National Capital Planning Commission review, and the systems permits are pulled and inspected separately.
Trade permits, public space and sister-agency review
In the District the building permit does not stand alone. Electrical, plumbing and mechanical work are separate systems permits, pulled by the licensed trade contractor. Work that uses public space — a sidewalk shed, a curb cut, a projection over the sidewalk — needs a public space permit from the District Department of Transportation. And through the Department of Buildings' online plan review, an application is routed to the sister agencies a project touches: Historic Preservation, the Department of Energy and Environment, the transportation department, the water authority, and the transit authority for work near the Metro. Only a contractor licensed in the District for that specific trade may pull the corresponding systems permit.
Washington, DC permit costs and fees
The Department of Buildings scales its building permit to construction valuation under a published fee schedule, with the systems permits budgeted apart. The cost dimensions particular to the District are the design review the overlays add and the time a complex review can take.
| Item | Fee or rule |
|---|---|
| Building permit | Scaled to construction valuation under the Department of Buildings fee schedule |
| Systems permits | Separate electrical, plumbing and mechanical permits, budgeted apart |
| Green Construction Code | Applies to new buildings and substantial improvements of ten thousand square feet or more |
| Design review | Historic and federal review, routed within the permit, can add time on affected parcels |
The overlays, not the counter, set the timeline. Because historic and federal design review are routed inside the building permit, the parcel's overlays — a historic district, a federal viewshed, the Height Act — are what most often set the schedule in the District, so establishing them before design is the real time-saver.
Trade permits and who may pull them
Trade work in the District is permitted separately from the building permit and pulled by licensed DC trade contractors. Electrical, plumbing and mechanical — the systems permits — are each applied for, reviewed and inspected on their own.
Permit required
- General construction — under a DC-licensed contractor, with a Department of Buildings building permit
- Electrical — a systems permit pulled by a licensed DC electrical contractor
- Plumbing and gas — a systems permit pulled by a licensed DC plumbing contractor
- Mechanical — a systems permit for HVAC and related work, to the DC Construction Codes
Typically exempt
- A separate contractor licence for each area — the District is one jurisdiction, so a DC licence covers the whole city
- Minor work the DC Construction Codes place below the permit threshold
How to apply for a Washington, DC building permit
Check whether the parcel sits in a historic district, a federal review area, or a flood or environmental overlay — these shape the review before design begins.
The current DC Construction Codes govern the design, and the federal Height Act caps building height against the adjacent street width.
General construction needs a DC-licensed contractor; electrical, plumbing and mechanical need licensed DC trade contractors for their systems permits.
Assemble plans for the Department of Buildings' online review, which routes simultaneously to any sister agencies the project touches.
The building permit through the Department of Buildings, plus a District Department of Transportation public space permit for any work in public space.
Building and systems inspections against the permit number, then the certificate of occupancy to close out.
Review, corrections and what actually causes delay
The District's delays that recur are overlay and completeness delays: a design that met the code but missed a historic-district condition or the Height Act envelope, or a submittal that arrived incomplete for the online review. Establishing the overlays first, designing to the Height Act, and filing a complete package keep the review moving.
Inspections in Washington, DC
Department of Buildings inspections follow the DC Construction Codes — footing and foundation, framing, the separate systems inspections, and final — requested against the permit number, with the certificate of occupancy issued once the work passes and the zoning and use requirements are met. Historic and federal design conditions attached to the permit carry through to the final sign-off. The Department of Buildings holds every inspection against the permit number, and any historic or federal condition attached to it carries through to the certificate of occupancy.
Washington, DC permit search and official resources
- DC Historic Preservation Office — the historic-district review that is routed within the building permit
- District Department of Transportation — public space permits for work in the sidewalk, tree space and other public space
- DC Department of Buildings — the building authority for the District: permits, the DC Construction Codes, plan review and inspections
- DOB: How to Get a Permit — the online permit process, ProjectDox plan review and the Digital Walk-Through for small projects
Frequently asked questions
Who issues building permits in DC now?
The Department of Buildings. It was created in 2022 when the former Department of Consumer and Regulatory Affairs was split, and it is now the single building authority for the entire District, handling permits, plan review, inspections and code enforcement.
What is the Height Act?
A federal law that caps building height against the width of the adjacent street — generally to about a hundred and thirty feet on the widest avenues. It is why the District has no conventional skyscrapers, and it shapes massing on nearly every substantial project.
Do I need a separate historic-preservation permit?
No. In a historic district the Historic Preservation Office reviews the work as part of the building permit itself — its clearance of the permit application is the preservation approval, so there is no standalone preservation certificate to file.
How long does a DC permit take?
It depends on the scope. Small projects can clear the Digital Walk-Through online review in about a business day, while complex projects go through ProjectDox and can take considerably longer, particularly where historic or federal review applies.
Who can pull electrical and plumbing permits?
Only a contractor licensed in the District for that specific trade. Electrical, plumbing and mechanical work are separate systems permits, pulled by the licensed trade contractor and inspected on their own.
When do I need a public space permit?
Whenever a project uses public space — a sidewalk shed, scaffolding, a curb cut or a projection over the sidewalk. That permit comes from the District Department of Transportation, separately from the building permit.
Simplify Washington, DC permitting with Alliance Permitting
More than twenty years of working real jurisdictions is what tells you that in the District the building permit and the design review move together — the Height Act, the historic districts and the federal boards are settled inside the permit, not beside it. Our team establishes the overlays before design, builds the submittal for the Department of Buildings' online review, coordinates the systems and public space permits, and tracks the application through issuance and the certificate of occupancy — corrections included.
Ready to break ground in Washington, DC sooner?
Send us the scope and the parcel. We confirm the review path with the District of Columbia Department of Buildings, assemble the submittal, file it, and track it through issuance — corrections included.
This guide is provided by Alliance Permitting for general information about Washington, DC permitting. Requirements, fees, and procedures change; confirm details with the permitting authority before relying on them.