# Alteration or repair permit B2603124 at 3408 20th St NE, Washington

DC Department of Buildings permit B2603124: issued May 14, 2026 for alteration or repair work at 3408 20th St NE. Detached single-family home - Underpinning an existing crawlspace to form a media room and kitchenette. Relocate the existing staircase to accommodate the new space. Extend the existing joists on the first floor to frame the new staircase. Replace several load-bearing posts in the crawlspace with structural beams. New mini-split HVAC system to serve the new basement space. New window well. New insulation, drywall, electrical, and plumbing to finish the space. Total area affected 528 SF.

- Permit number: B2603124
- Issued: May 14, 2026
- Type of work: Alteration or repair (city: Construction, alteration and repair)
- Status: Issued (city: Permit issued)
- Reported cost: Not listed
- ZIP code: 20018
- All permits at this address: https://nearbypermits.com/washington-dc/address/3408-20th-st-ne/

---
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 05:48 UTC. Nearby Permits, https://nearbypermits.com. JSON API and MCP server: https://nearbypermits.com/developers/

Every permit at 3408 20th St NE: https://nearbypermits.com/washington-dc/address/3408-20th-st-ne/