Room Addition Permit Requirements in Washington, DC
When you DO need a permit
All additions require building and zoning permits in Washington, DC.
Estimated fee: $480 – $1,440
Typical timeline: About 4 weeks
Source: DC Construction Code
Large additions require comprehensive permitting in Washington, DC.
Estimated fee: $960 – $4,800
Typical timeline: About 6 weeks
Source: DC Construction Code
Two-story additions require comprehensive permitting in Washington, DC.
Estimated fee: $1,200 – $6,000
Typical timeline: About 6 weeks
Source: DC Construction Code
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Frequently Asked Questions
Estimated permit fees for Room Addition projects in Washington, DC range from $480 – $1,440. Fees vary based on project scope and valuation.
It depends on the specifics of your project. Some smaller Room Addition projects may be exempt from permit requirements, while larger ones typically require a permit. Use our free lookup tool to check your specific situation.
Working without a required permit in Washington can result in fines, stop-work orders, being required to remove completed work, and complications when selling your home. It's always best to check first.
Typical approval time for Room Addition permits in Washington is About 4 weeks. More complex projects may take longer if plan review is required.