Replacement of three (3) existing vertical dual-temperature closed-loop riser piping systems
Alteration or repair at 730 24th St NW, Washington
DC Department of Buildings permit B2607630: issued Sep 11, 2026 for alteration or repair work at 730 24th St NW. Replacement of three (3) existing vertical dual-temperature closed-loop riser piping systems (Risers 1, 13, and 24) in an existing 9-story mixed-use cooperative. Work: remove and replace supply/return L-type copper riser piping and PVC condensate drain; new isolation and ball valves; pipe insulation and floor-penetration firestopping; interior drywall removal and repair; and exterior balcony masonry demolition (approx. 24" x 96" per floor at the pipe chase) rebuilt to match existing. Asbestos abatement of pipe insulation performed under a separate DOEE permit by a licensed abatement subcontractor. Fan coil unit replacement is not included in this permit.
- Permit number
- B2607630
- Issued
- Type of work
- Alteration or repair
- Status
- Issued
- Reported cost
- Not listed
- ZIP code
- 20037
- City's category
- Construction, alteration and 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 730 24th St NW, and what's permitted nearby
DC Department of Buildings updated its data Oct 6, 2026. We checked it Oct 6, 22:01 UTC. See the city's official records (District of Columbia, CC BY 4.0).
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