# Addition permit B2603423 at 4501 Harrison St NW, Washington

DC Department of Buildings permit B2603423: issued Jul 9, 2026 for addition work at 4501 Harrison St NW. ALTERATION and ADDITION to an existing 2-story plus basement, detached single family dwelling (no change in use). Demolish existing front porch, rear-deck and entire existing roof. Add 3rd floor addition on top of existing 2nd floor. Add rear addition (3-stories plus basement) and add front addition (3-stories plus basement) All new MEP, build new kitchen plus 5-1/2 bathrooms. Incl. accessory dwelling in basement.

- Permit number: B2603423
- Issued: Jul 9, 2026
- Type of work: Addition (city: Construction, addition alteration repair)
- Status: Issued (city: Permit issued)
- Reported cost: Not listed
- ZIP code: 20015
- All permits at this address: https://nearbypermits.com/washington-dc/address/4501-harrison-st-nw/

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Source: DC Department of Buildings permit data (https://opendata.dc.gov/datasets/7296e6392349498bb6ba6ba3db836644_18), District of Columbia, CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Checked 2026-10-06 16:08 UTC. Nearby Permits, https://nearbypermits.com. JSON API and MCP server: https://nearbypermits.com/developers/

Every permit at 4501 Harrison St NW: https://nearbypermits.com/washington-dc/address/4501-harrison-st-nw/