# Building permits at 335 S 40th St, Boulder, CO

Three permits on record here. The newest, Sep 17: Installing: 1-MXZ-SM48NLHZ Mitsubishi Heat Pump 49.6K BTU Cooling. 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 |
|---|---|---|---|---|
| Sep 17, 2026 | Mechanical (HVAC) | Installing: 1-MXZ-SM48NLHZ Mitsubishi Heat Pump 49.6K BTU Cooling, 51.8K BTU Heating, 20.5 SEER2 1-SVZ-AP36NL 28.9K BTU Cooling, 28.2K BTU Heating 1-MSZ-GX15NL 12K BTU Cooling, 14.8K BTU Heating 1-Level 3 Electrical Services PLEASE NOTE: APPLICABLE ONLY TO SYSTEMS WITH FUEL BURNING APPLIANCES: All n | $36,775 | [MEC2026-01688](https://nearbypermits.com/boulder/permit/MEC2026-01688/) |
| Oct 8, 2013 | Roofing | Tear-off & reroof of SFD, 13 squares of asphalt shingles on a pitch represented as 5/12. Shingles to comply with ASTM D225 or D3462 and D3161 Class F. Overlay not allowed - see section R907.3 (specifically item 4) of 2006 IRC. | $7,500 | [PMT2013-05252-RFG](https://nearbypermits.com/boulder/permit/PMT2013-05252-RFG/) |
| Nov 16, 2005 | Mechanical (HVAC) | Mechanical permit to replace a water heater | $350 | [PMT2005-04453-MEC](https://nearbypermits.com/boulder/permit/PMT2005-04453-MEC/) |

## More on this street

Other addresses on S 40th St with permits, nearest house number first:

- [320 S 40th St](https://nearbypermits.com/boulder/address/320-s-40th-st/): newest permit Aug 28, 2025
- [310 S 40th St](https://nearbypermits.com/boulder/address/310-s-40th-st/): newest permit May 27, 2026
- [365 S 40th St](https://nearbypermits.com/boulder/address/365-s-40th-st/): newest permit Jul 14, 2025
- [375 S 40th St](https://nearbypermits.com/boulder/address/375-s-40th-st/): newest permit Jul 27, 2026
- [285 S 40th St](https://nearbypermits.com/boulder/address/285-s-40th-st/): newest permit Mar 25, 2026
- [265 S 40th St](https://nearbypermits.com/boulder/address/265-s-40th-st/): newest permit Jul 28, 2026
- [255 S 40th St](https://nearbypermits.com/boulder/address/255-s-40th-st/): newest permit Aug 4, 2025
- [240 S 40th St](https://nearbypermits.com/boulder/address/240-s-40th-st/): newest permit May 5, 2025
- [450 S 40th St](https://nearbypermits.com/boulder/address/450-s-40th-st/): newest permit Feb 19, 2026
- [455 S 40th St](https://nearbypermits.com/boulder/address/455-s-40th-st/): newest permit Apr 1, 2025

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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 01:49 UTC. Nearby Permits, https://nearbypermits.com. JSON API and MCP server: https://nearbypermits.com/developers/

All 3 permits at this address: https://nearbypermits.com/boulder/address/335-s-40th-st/