# Building permits at 3520 Cooper St, Boulder, CO

Four permits on record here. The newest, Jul 3, 2025: Installation of mini split system *See ELE2025-00453*. 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 |
|---|---|---|---|---|
| Jul 3, 2025 | Mechanical (HVAC) | Installation of mini split system *See ELE2025-00453* | $21,800 | [MEC2025-00900](https://nearbypermits.com/boulder/permit/MEC2025-00900/) |
| Jun 9, 2025 | Electrical | Mini Split Circuit and related wiring. 40-amp, 240-volt for condenser. 20-amp, 120-volt for service receptacle. 15-amp, 240-volt for "branch box". Will apply for mec for the mechanical portion of this work | $1,500 | [ELE2025-00453](https://nearbypermits.com/boulder/permit/ELE2025-00453/) |
| Aug 24, 2023 | Electrical | Install circuit for whole house attic fan | $400 | [ELE2023-00857](https://nearbypermits.com/boulder/permit/ELE2023-00857/) |
| Jul 12, 2023 | Roofing | Total tear-off & reroof of SFD and attached garage. Approximately 3.5 squares of flat roof with modified bitumen on the attached garage and approximately 4 squares on the sloped roof for the dwelling on a pitch represented as 4/12. All roof materials shall be installed per manufacturer?s specs. Mid- | $25,270 | [RFG2023-00306](https://nearbypermits.com/boulder/permit/RFG2023-00306/) |

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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 22:37 UTC. Nearby Permits, https://nearbypermits.com. JSON API and MCP server: https://nearbypermits.com/developers/

All 4 permits at this address: https://nearbypermits.com/boulder/address/3520-cooper-st/