# Alteration or repair permit BLD-SFD2026-00017 at 3421 4th St, Boulder

Boulder Planning and Development Services permit BLD-SFD2026-00017: issued Jan 23, 2026 for alteration or repair work at 3421 4th St. Remove & replace (2) windows - no alterations to framed openings - u-factor.23.

- Permit number: BLD-SFD2026-00017
- Issued: Jan 23, 2026
- Type of work: Alteration or repair (city: Building Permit - Single Family Detached Dwelling, Alteration)
- Status: Finished (city: Letter of Completion)
- Reported cost: $2,491
- ZIP code: 80304
- All permits at this address: https://nearbypermits.com/boulder/address/3421-4th-st/

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Source: Boulder Planning and Development Services permit data (https://www.arcgis.com/home/item.html?id=e3ff6248e4a547bcba31025d2c5c9fee). Checked 2026-10-08 07:15 UTC. Nearby Permits, https://nearbypermits.com. JSON API and MCP server: https://nearbypermits.com/developers/

Every permit at 3421 4th St: https://nearbypermits.com/boulder/address/3421-4th-st/