# Alteration or repair permit B2608080 at 450 Irving St NW, Washington

DC Department of Buildings permit B2608080: issued Sep 28, 2026 for alteration or repair work at 450 Irving St NW. Revision to existing Permit B2501523 to revise the approved floor/ceiling assembly between the basement and first floor. Revised Sheet A-301 updates the assembly materials and detail while maintaining the required 1-hour fire-resistance rating and STC 50 rating. No change to use, occupancy, building footprint, height, layout, or exterior work is proposed.

- Permit number: B2608080
- Issued: Sep 28, 2026
- Type of work: Alteration or repair (city: Construction, alteration and repair)
- Status: Issued (city: Permit issued)
- Reported cost: Not listed
- ZIP code: 20010
- All permits at this address: https://nearbypermits.com/washington-dc/address/450-irving-st-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 2026-10-05 11:10 UTC. Nearby Permits, https://nearbypermits.com. JSON API and MCP server: https://nearbypermits.com/developers/

Every permit at 450 Irving St NW: https://nearbypermits.com/washington-dc/address/450-irving-st-nw/