# Building permits at 3117 Bell Dr, Boulder, CO

One permit here in the last two years. The newest, Mar 19: Replace like for like residential boiler/ add new expansion tank/backflow and auto vent. 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 |
|---|---|---|---|---|
| Mar 19, 2026 | Mechanical (HVAC) | Replace like for like residential boiler/ add new expansion tank/backflow and auto vent. Also correct venting on existing tankless water. PLEASE NOTE: APPLICABLE ONLY TO SYSTEMS WITH FUEL BURNING APPLIANCES: All new plastic glued vents for fuel burning appliances must undergo pressure testing. To fa | $6,750 | [MEC2026-00401](https://nearbypermits.com/boulder/permit/MEC2026-00401/) |

## More on this street

Other addresses on Bell Dr with permits, nearest house number first:

- [3116 Bell Dr](https://nearbypermits.com/boulder/address/3116-bell-dr/): newest permit Jan 21, 2025
- [3109 Bell Dr](https://nearbypermits.com/boulder/address/3109-bell-dr/): newest permit Nov 7, 2024
- [3130 Bell Dr](https://nearbypermits.com/boulder/address/3130-bell-dr/): newest permit May 27, 2025
- [3103 Bell Dr](https://nearbypermits.com/boulder/address/3103-bell-dr/): newest permit Nov 7, 2024
- [3141 Bell Dr](https://nearbypermits.com/boulder/address/3141-bell-dr/): newest permit Mar 4, 2025

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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 01:58 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/3117-bell-dr/