# Mechanical (HVAC) permit MEC2020-01086 at 3621 21st St, Boulder

Boulder Planning and Development Services permit MEC2020-01086: issued Nov 23, 2020 for mechanical (hvac) work at 3621 21st St. *New 7948 sf 2-story single family detached dwelling with basement and attached garage. Basement: 2538 sf (1031 sf finished). 1st Floor: 3067 sf w/ 978 sf attached garage. 2nd Floor: 1365 sf.

- Permit number: MEC2020-01086
- Issued: Nov 23, 2020
- Type of work: Mechanical (HVAC) (city: Mechanical Permit, Mechanical Sub-Permit)
- Status: Finished (city: Closed)
- Reported cost: $163,500
- ZIP code: 80304
- All permits at this address: https://nearbypermits.com/boulder/address/3621-21st-st/

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Source: Boulder Planning and Development Services permit data (https://www.arcgis.com/home/item.html?id=e3ff6248e4a547bcba31025d2c5c9fee). Checked 2026-10-11 03:57 UTC. Nearby Permits, https://nearbypermits.com. JSON API and MCP server: https://nearbypermits.com/developers/

Every permit at 3621 21st St: https://nearbypermits.com/boulder/address/3621-21st-st/