# Addition permit B2604909 at 3511 Patterson St NW, Washington

DC Department of Buildings permit B2604909: issued Aug 14, 2026 for addition work at 3511 Patterson St NW. Construct addition to and renovate existing single-family detached dwelling, including mechanical, electrical and plumbing systems, grading, steps, retaining walls, drainage and associated appurtenances. 4,816 sf.

- Permit number: B2604909
- Issued: Aug 14, 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/3511-patterson-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 2026-10-17 00:53 UTC. Nearby Permits, https://nearbypermits.com. JSON API and MCP server: https://nearbypermits.com/developers/

Every permit at 3511 Patterson St NW: https://nearbypermits.com/washington-dc/address/3511-patterson-st-nw/