# Mechanical (HVAC) permit MEC2026-00401 at 3117 Bell Dr, Boulder

Boulder Planning and Development Services permit MEC2026-00401: issued Mar 19, 2026 for mechanical (hvac) work at 3117 Bell Dr. 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 facilitate the inspection process, please provide photographic evidence of the pressure test directly to the assigned inspector on the day the rough mechanical inspection is scheduled. Approved tests: 10 ft water test, 5 PSI positive pressure, or Negative 5 psi air pressure test for 15 Minutes.

- Permit number: MEC2026-00401
- Issued: Mar 19, 2026
- Type of work: Mechanical (HVAC) (city: Mechanical Permit, Mechanical HVAC/Solar)
- Status: Finished (city: Letter of Completion)
- Reported cost: $6,750
- ZIP code: 80301
- All permits at this address: https://nearbypermits.com/boulder/address/3117-bell-dr/

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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 01:52 UTC. Nearby Permits, https://nearbypermits.com. JSON API and MCP server: https://nearbypermits.com/developers/

Every permit at 3117 Bell Dr: https://nearbypermits.com/boulder/address/3117-bell-dr/