# Building permits at 642 Mapleton Ave, Boulder, CO

One permit here in the last two years. The newest, May 19: Replacement AC PLEASE NOTE: APPLICABLE ONLY TO SYSTEMS WITH FUEL BURNING APPLIANCES: All new plastic glued. 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 |
|---|---|---|---|---|
| May 19, 2026 | Mechanical (HVAC) | replacement AC PLEASE NOTE: APPLICABLE ONLY TO SYSTEMS WITH FUEL BURNING APPLIANCES: All new plastic glued vents for fuel burning appliances must undergo pressure testing. To facilitate the inspection process, please provide photographic evidence of the pressure test directly to the assigned inspect | $7,590 | [MEC2026-00822](https://nearbypermits.com/boulder/permit/MEC2026-00822/) |

## More on this street

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

- [625 Mapleton Ave](https://nearbypermits.com/boulder/address/625-mapleton-ave/): newest permit Feb 18, 2026
- [704 Mapleton Ave](https://nearbypermits.com/boulder/address/704-mapleton-ave/): newest permit Jan 7, 2026
- [707 Mapleton Ave](https://nearbypermits.com/boulder/address/707-mapleton-ave/): newest permit Mar 12, 2025
- [712 Mapleton Ave](https://nearbypermits.com/boulder/address/712-mapleton-ave/): newest permit Mar 9, 2026
- [720 Mapleton Ave](https://nearbypermits.com/boulder/address/720-mapleton-ave/): newest permit Apr 9, 2025
- [553 Mapleton Ave](https://nearbypermits.com/boulder/address/553-mapleton-ave/): newest permit Jan 29, 2025
- [520 Mapleton Ave](https://nearbypermits.com/boulder/address/520-mapleton-ave/): newest permit Jan 14, 2025
- [501 Mapleton Ave](https://nearbypermits.com/boulder/address/501-mapleton-ave/): newest permit Nov 18, 2024
- [847 Mapleton Ave](https://nearbypermits.com/boulder/address/847-mapleton-ave/): newest permit Aug 27, 2025
- [433 Mapleton Ave](https://nearbypermits.com/boulder/address/433-mapleton-ave/): newest permit Jan 26, 2026

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Source: Boulder Planning and Development Services permit data (https://www.arcgis.com/home/item.html?id=e3ff6248e4a547bcba31025d2c5c9fee). Checked 2026-10-07 05:03 UTC. Nearby Permits, https://nearbypermits.com. JSON API and MCP server: https://nearbypermits.com/developers/

The one permit at this address: https://nearbypermits.com/boulder/address/642-mapleton-ave/