# Addition permit B2600288 at 4320 Cathedral Ave NW, Washington

DC Department of Buildings permit B2600288: issued Jun 23, 2026 for addition work at 4320 Cathedral Ave NW. Construct two-story addition consisting of a new first floor family room and new second floor bedroom w/ bathroom.

- Permit number: B2600288
- Issued: Jun 23, 2026
- Type of work: Addition (city: Construction, addition alteration repair)
- Status: Issued (city: Permit issued)
- Reported cost: Not listed
- ZIP code: 20016
- All permits at this address: https://nearbypermits.com/washington-dc/address/4320-cathedral-ave-nw/

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Source: DC Department of Buildings permit data (https://opendata.dc.gov/datasets/7296e6392349498bb6ba6ba3db836644_18), CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Checked 2026-10-06 07:03 UTC. Nearby Permits, https://nearbypermits.com. JSON API and MCP server: https://nearbypermits.com/developers/

Every permit at 4320 Cathedral Ave NW: https://nearbypermits.com/washington-dc/address/4320-cathedral-ave-nw/