# Alteration or repair permit B2509001 at 3700 O St NW, Washington

DC Department of Buildings permit B2509001: issued Jan 29, 2026 for alteration or repair work at 3700 O St NW. Commission of Fine Arts jurisdiction area Installation of (2) 500-ton TRANE temporary Chillers and associated equipment located at 9703 Prospect St / Lot #9 parking lot. The purpose of these chillers is to provide temporary chilled water to the Lauinger Library and Village A buildings during the chilled water piping and equipment renovations Time Frame: October 2025 through October 2026.

- Permit number: B2509001
- Issued: Jan 29, 2026
- Type of work: Alteration or repair (city: Construction, alteration and repair)
- Status: Issued (city: Permit issued)
- Reported cost: Not listed
- ZIP code: 20057
- All permits at this address: https://nearbypermits.com/washington-dc/address/3700-o-st-nw/

---
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 2026-10-11 12:58 UTC. Nearby Permits, https://nearbypermits.com. JSON API and MCP server: https://nearbypermits.com/developers/

Every permit at 3700 O St NW: https://nearbypermits.com/washington-dc/address/3700-o-st-nw/