# Building permits at 921 15th St, Boulder, CO

Six permits on record here. The newest, Jun 11: Remove and replace 10 windows of like sizes and with no structural work. 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 |
|---|---|---|---|---|
| Jun 11, 2026 | Alteration or repair | Remove and replace 10 windows of like sizes and with no structural work. | $7,395 | [BLD-SFD2026-00297](https://nearbypermits.com/boulder/permit/BLD-SFD2026-00297/) |
| Sep 11, 2023 | Electrical | Replace main electrical panel - new electrical panel (due to age and condition), moving main disconnect outside [200A->200A, no service change] along with ATS transfer switch box for a generator hookup (generator and pipe are being performed by other companies) | $8,700 | [ELE2023-00931](https://nearbypermits.com/boulder/permit/ELE2023-00931/) |
| Aug 30, 2023 | Mechanical (HVAC) | Run about 60 feet of gas line to a new generator (1.25 inch gas line) | $3,475 | [MEC2023-01312](https://nearbypermits.com/boulder/permit/MEC2023-01312/) |
| Oct 19, 2022 | Mechanical (HVAC) | Voided for inactivity - no inspections within 180 days* Replacing with a new EL280UH110E48C Lennox 2 Stage 80 % efficient 110K BTU Furnace and a Lennox ML14XC1-048-230 4 Ton AC unit | $23,626 | [MEC2022-01851](https://nearbypermits.com/boulder/permit/MEC2022-01851/) |
| Oct 19, 2022 | Mechanical (HVAC) | Voided for inactivity - no inspections within 180 days* Replacing with a new RG250T6N 50 Gallon Standard Water Heater | $4,484 | [MEC2022-01850](https://nearbypermits.com/boulder/permit/MEC2022-01850/) |
| Jan 19, 2005 | Mechanical (HVAC) | Replacement Water Heater, Replacement Forced Air Furnace, New Comfort Cooling | $10,265 | [PMT2005-20010-MEC](https://nearbypermits.com/boulder/permit/PMT2005-20010-MEC/) |

## More on this street

Other addresses on 15th St with permits, nearest house number first:

- [915 15th St](https://nearbypermits.com/boulder/address/915-15th-st/): newest permit Jul 28, 2026
- [937 15th St](https://nearbypermits.com/boulder/address/937-15th-st/): newest permit Sep 5, 2025
- [888 15th St](https://nearbypermits.com/boulder/address/888-15th-st/): newest permit Dec 17, 2024
- [876 15th St](https://nearbypermits.com/boulder/address/876-15th-st/): newest permit May 28, 2025
- [851 15th St](https://nearbypermits.com/boulder/address/851-15th-st/): newest permit Oct 27, 2025
- [1020 15th St](https://nearbypermits.com/boulder/address/1020-15th-st/): newest permit Nov 7, 2024
- [820 15th St](https://nearbypermits.com/boulder/address/820-15th-st/): newest permit Nov 18, 2025
- [1025 15th St](https://nearbypermits.com/boulder/address/1025-15th-st/): newest permit Jul 24, 2026
- [764 15th St](https://nearbypermits.com/boulder/address/764-15th-st/): newest permit Nov 1, 2024
- [645 15th St](https://nearbypermits.com/boulder/address/645-15th-st/): newest permit May 21, 2026

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Source: Boulder Planning and Development Services permit data (https://www.arcgis.com/home/item.html?id=e3ff6248e4a547bcba31025d2c5c9fee). Checked 2026-10-08 12:38 UTC. Nearby Permits, https://nearbypermits.com. JSON API and MCP server: https://nearbypermits.com/developers/

All 6 permits at this address: https://nearbypermits.com/boulder/address/921-15th-st/