# Addition permit B2504489 at 310 9th St SE, Washington

DC Department of Buildings permit B2504489: issued Jun 17, 2025 for addition work at 310 9th St SE. In the Capitol Hill Historic District The project includes the addition and interior renovation of the building to convert to a two-family flat. The design and layout will be based on the previously approved drawings. It is assumed that an NFPA 13R sprinkler system will be required for the addition and alteration of the spaces. The existing electrical, gas and water/sewer services are assumed to be adequate and will remain as is.

- Permit number: B2504489
- Issued: Jun 17, 2025
- Type of work: Addition (city: Construction, addition alteration repair)
- Status: Issued (city: Permit issued)
- Reported cost: Not listed
- ZIP code: 20003
- All permits at this address: https://nearbypermits.com/washington-dc/address/310-9th-st-se/

---
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 2026-10-16 10:52 UTC. Nearby Permits, https://nearbypermits.com. JSON API and MCP server: https://nearbypermits.com/developers/

Every permit at 310 9th St SE: https://nearbypermits.com/washington-dc/address/310-9th-st-se/