Alterations of 1st floor (1,015 sf) and addition of stairway and usable space in attic (151 sf)
Addition at 2345 Walnut St, Boulder
Boulder Planning and Development Services permit BLD-SFD2025-00387: issued Dec 12, 2025 for addition work at 2345 Walnut St. Alterations of 1st floor (1,015 sf) and addition of stairway and usable space in attic (151 sf). *11/20/25 Revision to reduce scope. Remove the addition of floor area to the existing attic and associated stair and dormer.* *See HIS2025-00069*.
- Permit number
- BLD-SFD2025-00387
- Issued
- Type of work
- Addition
- Status
- Finished
- Reported cost
- $90,000
- ZIP code
- 80302
- City's category
- Building Permit - Single Family Detached Dwelling, Addition and Alteration
- City's status
- Letter of Completion
- Source
- Boulder Planning and Development Services 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 2345 Walnut St, and what's permitted nearby
Boulder Planning and Development Services updated its data Oct 6, 2026. We checked it Oct 6, 22:13 UTC. See the city's official records.
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