# Mechanical (HVAC) permit MEC2018-01580 at 3633 21st St, Boulder

Boulder Planning and Development Services permit MEC2018-01580: issued Dec 12, 2018 for mechanical (hvac) work at 3633 21st St. *Voided for inactivity - requirements not met.* *Installation of a replacement 190k BTU, 85% efficient, high-pressure Burnham boiler. Installation per manufacturer's specifications.

- Permit number: MEC2018-01580
- Issued: Dec 12, 2018
- Type of work: Mechanical (HVAC) (city: Mechanical Permit, Mechanical HVAC/Solar)
- Status: Cancelled (city: Void)
- Reported cost: $17,500
- ZIP code: 80304
- All permits at this address: https://nearbypermits.com/boulder/address/3633-21st-st/

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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 20:59 UTC. Nearby Permits, https://nearbypermits.com. JSON API and MCP server: https://nearbypermits.com/developers/

Every permit at 3633 21st St: https://nearbypermits.com/boulder/address/3633-21st-st/