# Mechanical (HVAC) permit MEC2021-01869 at 311 Mapleton Ave, Boulder

Boulder Planning and Development Services permit MEC2021-01869: issued May 23, 2022 for mechanical (hvac) work at 311 Mapleton Ave. 2527/2529 4th Street (duplex): New construction of 2-story duplex building with an attached single-car garage. Each unit will have a total building area of 3,621.5 GSF. H1 has two bedrooms, 3.5 bathrooms, roof deck, and a single car garage. H2 has two bedrooms, 2.5 bathrooms, roof deck, and a single car garage. The building materials shall include cultured stone, cementitious fiberboard siding, metal panel, glass railing, standing seam metal roof, overhead garage door, aluminum clad wood doors and windows.

- Permit number: MEC2021-01869
- Issued: May 23, 2022
- Type of work: Mechanical (HVAC) (city: Mechanical Permit, Mechanical Sub-Permit)
- Status: Finished (city: Closed)
- Reported cost: $15,000
- ZIP code: 80304
- All permits at this address: https://nearbypermits.com/boulder/address/311-mapleton-ave/

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Source: Boulder Planning and Development Services permit data (https://www.arcgis.com/home/item.html?id=e3ff6248e4a547bcba31025d2c5c9fee). Checked 2026-10-06 21:34 UTC. Nearby Permits, https://nearbypermits.com. JSON API and MCP server: https://nearbypermits.com/developers/

Every permit at 311 Mapleton Ave: https://nearbypermits.com/boulder/address/311-mapleton-ave/