District of Columbia · DCCoverage expanding
District of Columbia residential & ADU permit data
A single-jurisdiction permitting market
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Housing law
In the District of Columbia, accessory dwelling units follow the District's own zoning rules rather than any statewide mandate, since D.C. is a single jurisdiction.
Residential density in the District is governed by D.C.'s zoning code; there is no separate statewide upzoning law.
Local zoning (no statewide mandate)
Major permit jurisdictions
Washington
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A dense, high-activity urban permitting market in one jurisdiction
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Permit data via the District's open-data portal (opendata.dc.gov) and public records where available.
Informational only, not legal advice. Housing law changes — verify current statutes before relying on this.