# Building permits at 428 Alpine Ave, Boulder, CO

428 Alpine Ave: demolition permitted Nov 20, 2025, a new building Dec 10, 2025.

Four permits on record here. The newest, Dec 10, 2025: New two-story single family home that includes a full finished basement. Boulder publishes permits without map coordinates, so this address has no map and no quarter-mile list.

## At this address

| Date | Type | Work | Cost | Permit |
|---|---|---|---|---|
| Dec 10, 2025 | New building | 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 | $1,100,000 | [BLD-SFD2025-00261](https://nearbypermits.com/boulder/permit/BLD-SFD2025-00261/) |
| Dec 4, 2025 | Fence, wall or deck | New detached 2 car garage (440 SF) with roof deck *See BLD-SFD2025-00261* | $200,000 | [BLD-ACC2025-00060](https://nearbypermits.com/boulder/permit/BLD-ACC2025-00060/) |
| Nov 20, 2025 | Demolition | Demolition of garage | Not listed | [DEM2025-00094](https://nearbypermits.com/boulder/permit/DEM2025-00094/) |
| Nov 20, 2025 | Demolition | Full Deconstruction of 1140 sq ft single family residential building A separate demo permit required for detached garage *HIS2025-00043* | Not listed | [DEM2025-00089](https://nearbypermits.com/boulder/permit/DEM2025-00089/) |

## More on this street

Other addresses on Alpine Ave with permits, nearest house number first:

- [422 Alpine Ave](https://nearbypermits.com/boulder/address/422-alpine-ave/): newest permit May 30, 2025
- [417 Alpine Ave](https://nearbypermits.com/boulder/address/417-alpine-ave/): newest permit Dec 12, 2024
- [408 Alpine Ave](https://nearbypermits.com/boulder/address/408-alpine-ave/): newest permit Jun 5, 2026
- [402 Alpine Ave](https://nearbypermits.com/boulder/address/402-alpine-ave/): newest permit Apr 3, 2026
- [515 Alpine Ave](https://nearbypermits.com/boulder/address/515-alpine-ave/): newest permit Sep 16, 2025
- [533 Alpine Ave](https://nearbypermits.com/boulder/address/533-alpine-ave/): newest permit May 27, 2025
- [605 Alpine Ave](https://nearbypermits.com/boulder/address/605-alpine-ave/): newest permit Jan 16, 2026
- [618 Alpine Ave](https://nearbypermits.com/boulder/address/618-alpine-ave/): newest permit Mar 26, 2026
- [808 Alpine Ave](https://nearbypermits.com/boulder/address/808-alpine-ave/): newest permit May 22, 2025
- [815 Alpine Ave 2](https://nearbypermits.com/boulder/address/815-alpine-ave-2/): newest permit Mar 16, 2026

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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 17:42 UTC. Nearby Permits, https://nearbypermits.com. JSON API and MCP server: https://nearbypermits.com/developers/

All 4 permits at this address: https://nearbypermits.com/boulder/address/428-alpine-ave/