# New building permit BLD-SFD2025-00261 at 428 Alpine Ave, Boulder

Boulder Planning and Development Services permit BLD-SFD2025-00261: issued Dec 10, 2025 for new building work at 428 Alpine Ave. New two-story single family home that includes a full finished basement. Total of 4 bedrooms and 3 1/2 bathrooms. Basement (1,458 sf) includes rec. room, 2 bedrooms and full bathroom. First floor (1,458 sf) includes dining room, living room, kitchen, mudroom, pantry, powder room, covered front porch (196 sf). Second floor (1,004 sf) includes 2 bedrooms, 1 office, and 2 full baths. Rear yard contains detached garage (440 SF) permitted separately with roof deck above and rear deck (424 SF). *See BLD-ACC2025-00060 for detached garage and HIS2025-00043*.

- Permit number: BLD-SFD2025-00261
- Issued: Dec 10, 2025
- Type of work: New building (city: Building Permit - Single Family Detached Dwelling, New)
- Status: Issued (city: Issued)
- Reported cost: $1,100,000
- ZIP code: 80304
- All permits at this address: https://nearbypermits.com/boulder/address/428-alpine-ave/

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Source: Boulder Planning and Development Services permit data (https://www.arcgis.com/home/item.html?id=e3ff6248e4a547bcba31025d2c5c9fee). Checked 2026-10-06 19:12 UTC. Nearby Permits, https://nearbypermits.com. JSON API and MCP server: https://nearbypermits.com/developers/

Every permit at 428 Alpine Ave: https://nearbypermits.com/boulder/address/428-alpine-ave/