Construct addition to and renovate existing single-family detached dwelling
Addition 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
- Type of work
- Addition
- Status
- Issued
- Reported cost
- Not listed
- ZIP code
- 20015
- City's category
- Construction, addition alteration repair
- City's status
- Permit issued
- Source
- DC Department of Buildings permit data (this record)
Type of work and status are our own standard labels, so permits compare across cities. The city's wording is in the "City's category" and "City's status" rows. We show costs under $100 as not listed, because filers often enter $0 or $1 when the city doesn't require a cost.
All permits at 3511 Patterson St NW, and what's permitted nearby
The newest permit in the city's data is from Oct 8, 2026, 8 days ago. Permits issued after that won't appear here until the city publishes them.
DC Department of Buildings updated its data Oct 16, 2026. We checked it Oct 16, 11:23 UTC. See the city's official records (District of Columbia, CC BY 4.0).
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