# Building permits at 3142 11th St, Boulder, CO

Seven permits on record here. The newest, Sep 1: Install replacement furnace and heat pump replacing air conditioner with associated electrical. 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 1, 2026 | Mechanical (HVAC) | Install replacement furnace and heat pump replacing air conditioner with associated electrical. PLEASE NOTE: APPLICABLE ONLY TO SYSTEMS WITH FUEL BURNING APPLIANCES: All new plastic glued vents for fuel burning appliances must undergo pressure testing. To facilitate the inspection process, please pr | $16,020 | [MEC2026-01596](https://nearbypermits.com/boulder/permit/MEC2026-01596/) |
| Jul 14, 2009 | Electrical | Second story addition to detached garage for loft space (295 sf). Work includes electrical (no plumbing and no mechanical). (See ADR2009-00003 for administrative solar exception) | $3,000 | [PMT2009-02216-ELE](https://nearbypermits.com/boulder/permit/PMT2009-02216-ELE/) |
| Jul 14, 2009 | Addition | Second story addition to detached garage for loft space (295 sf). Work includes electrical (no plumbing and no mechanical). (See ADR2009-00003 for administrative solar exception) | $28,293 | [PMT2009-02216](https://nearbypermits.com/boulder/permit/PMT2009-02216/) |
| Mar 31, 2004 | Plumbing | 2nd Story addition of 775 square feet. See ADR2003-00050 and ADR2004-00022 for solar exception and setback variance. Addition includes one new full bathroom. | $350 | [PMT2004-00580-PLB](https://nearbypermits.com/boulder/permit/PMT2004-00580-PLB/) |
| Mar 31, 2004 | Mechanical (HVAC) | 2nd Story addition of 775 square feet. See ADR2003-00050 and ADR2004-00022 for solar exception and setback variance. Addition includes one new full bathroom. | $1,800 | [PMT2004-00580-MEC](https://nearbypermits.com/boulder/permit/PMT2004-00580-MEC/) |
| Mar 31, 2004 | Electrical | 2nd Story addition of 775 square feet. See ADR2003-00050 and ADR2004-00022 for solar exception and setback variance. Addition includes one new full bathroom. | $1,100 | [PMT2004-00580-ELE](https://nearbypermits.com/boulder/permit/PMT2004-00580-ELE/) |
| Mar 31, 2004 | Addition | 2nd Story addition of 775 square feet. See ADR2003-00050 and ADR2004-00022 for solar exception and setback variance. Addition includes one new full bathroom. | $94,549 | [PMT2004-00580](https://nearbypermits.com/boulder/permit/PMT2004-00580/) |

## More on this street

Other addresses on 11th St with permits, nearest house number first:

- [3134 11th St](https://nearbypermits.com/boulder/address/3134-11th-st/): newest permit May 27, 2026
- [3150 11th St](https://nearbypermits.com/boulder/address/3150-11th-st/): newest permit Dec 26, 2025
- [3131 11th St](https://nearbypermits.com/boulder/address/3131-11th-st/): newest permit Dec 3, 2024
- [3159 11th St](https://nearbypermits.com/boulder/address/3159-11th-st/): newest permit Nov 20, 2024
- [3167 11th St](https://nearbypermits.com/boulder/address/3167-11th-st/): newest permit Nov 29, 2024
- [3172 11th St](https://nearbypermits.com/boulder/address/3172-11th-st/): newest permit Mar 13, 2026
- [3101 11th St](https://nearbypermits.com/boulder/address/3101-11th-st/): newest permit Jan 17, 2025
- [3062 11th St](https://nearbypermits.com/boulder/address/3062-11th-st/): newest permit Sep 28, 2026
- [3228 11th St](https://nearbypermits.com/boulder/address/3228-11th-st/): newest permit Feb 9, 2026
- [3230 11th St](https://nearbypermits.com/boulder/address/3230-11th-st/): newest permit Oct 28, 2024

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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 13:34 UTC. Nearby Permits, https://nearbypermits.com. JSON API and MCP server: https://nearbypermits.com/developers/

All 7 permits at this address: https://nearbypermits.com/boulder/address/3142-11th-st/