# Building permits at 3515 23rd St, Boulder, CO

Five permits on record here. The newest, Apr 30: Install new Heat Pump to replace existing AC for single family detached dwelling - includes electrical PLEASE. 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 |
|---|---|---|---|---|
| Apr 30, 2026 | Mechanical (HVAC) | Install new Heat Pump to replace existing AC for single family detached dwelling - includes 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, pl | $9,795 | [MEC2026-00680](https://nearbypermits.com/boulder/permit/MEC2026-00680/) |
| Dec 19, 2025 | Mechanical (HVAC) | Replacement furnace 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 provide photographic evidence of the pressure test directly to the assigned in | $6,228 | [MEC2025-02285](https://nearbypermits.com/boulder/permit/MEC2025-02285/) |
| Jun 14, 2000 | Alteration or repair | Tear off shake roof and install 40 year elk prestique plus shingles and install 8 velux skylights. Roof pitch is 4/12 and 23 squares. | Not listed | [PMT2000-02419](https://nearbypermits.com/boulder/permit/PMT2000-02419/) |
| Dec 31, 1999 | Mechanical (HVAC) | install water heater | $400 | [PMT2000-00118-MEC](https://nearbypermits.com/boulder/permit/PMT2000-00118-MEC/) |
| Oct 15, 1997 | Alteration or repair | Basement remodel the original general permit number is 976409. | $20,000 | [PMT1997-06409](https://nearbypermits.com/boulder/permit/PMT1997-06409/) |

## More on this street

Other addresses on 23rd St with permits, nearest house number first:

- [3505 23rd St](https://nearbypermits.com/boulder/address/3505-23rd-st/): newest permit Jan 2, 2026
- [3525 23rd St](https://nearbypermits.com/boulder/address/3525-23rd-st/): newest permit Jul 8, 2025
- [3445 23rd St](https://nearbypermits.com/boulder/address/3445-23rd-st/): newest permit Jul 3, 2025
- [3333 23rd St](https://nearbypermits.com/boulder/address/3333-23rd-st/): newest permit May 5, 2025
- [3165 23rd St](https://nearbypermits.com/boulder/address/3165-23rd-st/): newest permit Aug 18, 2026
- [3145 23rd St](https://nearbypermits.com/boulder/address/3145-23rd-st/): newest permit Sep 26, 2025
- [3140 23rd St](https://nearbypermits.com/boulder/address/3140-23rd-st/): newest permit Jun 3, 2026
- [3125 23rd St](https://nearbypermits.com/boulder/address/3125-23rd-st/): newest permit Sep 8, 2025
- [3105 23rd St](https://nearbypermits.com/boulder/address/3105-23rd-st/): newest permit Jun 30, 2026
- [3060 23rd St](https://nearbypermits.com/boulder/address/3060-23rd-st/): newest permit Oct 21, 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 07:44 UTC. Nearby Permits, https://nearbypermits.com. JSON API and MCP server: https://nearbypermits.com/developers/

All 5 permits at this address: https://nearbypermits.com/boulder/address/3515-23rd-st/