# Building permits at 3260 20th St, Boulder, CO

Seven permits on record here. The newest, Mar 14, 2025: Roof-mounted solar installation with inverter-battery 4/25/25 Updated conductor. 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 |
|---|---|---|---|---|
| Mar 14, 2025 | Electrical | Roof-mounted solar installation with inverter-battery 4/25/25 Updated conductor | $48,050 | [ELE2025-00145](https://nearbypermits.com/boulder/permit/ELE2025-00145/) |
| Feb 14, 2024 | Mechanical (HVAC) | VOID- INACTIVITY FOR 180 DAYS Installing 2 Air Handlers and 2 Heat Pumps. | $12,000 | [MEC2024-00224](https://nearbypermits.com/boulder/permit/MEC2024-00224/) |
| Jun 28, 2023 | Addition | Addition and remodel. Remodel of 2818 SF of existing, addition of 1381 SF for a total of 4199 SF. | $600,000 | [BLD-SFD2022-00537](https://nearbypermits.com/boulder/permit/BLD-SFD2022-00537/) |
| Oct 10, 2019 | Alteration or repair | Cutting (1) new egress compliant window from an existing opening on the SW wall of the basement. Permit is for the modification of the existing window opening only and does not constitute an approval of any basement finishes. | $2,500 | [BLD-SFD2019-00501](https://nearbypermits.com/boulder/permit/BLD-SFD2019-00501/) |
| Sep 25, 2000 | Mechanical (HVAC) | Install a 50 gal. water heater, 3 ton comfort cooling system and forced air furnace. New wiring for the mechanical work also. | $3,189 | [PMT2000-03913-MEC](https://nearbypermits.com/boulder/permit/PMT2000-03913-MEC/) |
| Sep 25, 2000 | Electrical | Install a 50 gal. water heater, 3 ton comfort cooling system and forced air furnace. New wiring for the mechanical work also. | $234 | [PMT2000-03913-ELE](https://nearbypermits.com/boulder/permit/PMT2000-03913-ELE/) |
| Oct 18, 1988 | Mechanical (HVAC) | Mechanical replace water heater | $350 | [PMT1988-N1906-MEC](https://nearbypermits.com/boulder/permit/PMT1988-N1906-MEC/) |

## More on this street

Other addresses on 20th St with permits, nearest house number first:

- [3210 20th St](https://nearbypermits.com/boulder/address/3210-20th-st/): newest permit Jun 15, 2026
- [3145 20th St](https://nearbypermits.com/boulder/address/3145-20th-st/): newest permit Sep 18, 2026
- [3125 20th St](https://nearbypermits.com/boulder/address/3125-20th-st/): newest permit Jun 13, 2025
- [3115 20th St](https://nearbypermits.com/boulder/address/3115-20th-st/): newest permit Dec 16, 2025
- [3110 20th St](https://nearbypermits.com/boulder/address/3110-20th-st/): newest permit Jul 28, 2025
- [2980 20th St](https://nearbypermits.com/boulder/address/2980-20th-st/): newest permit Jan 6, 2025
- [2940 20th St](https://nearbypermits.com/boulder/address/2940-20th-st/): newest permit Jan 7, 2026
- [2840 20th St](https://nearbypermits.com/boulder/address/2840-20th-st/): newest permit Jun 24, 2026
- [2831 20th St](https://nearbypermits.com/boulder/address/2831-20th-st/): newest permit Dec 18, 2024
- [2810 20th St](https://nearbypermits.com/boulder/address/2810-20th-st/): newest permit Jan 13, 2026

---
Source: Boulder Planning and Development Services permit data (https://www.arcgis.com/home/item.html?id=e3ff6248e4a547bcba31025d2c5c9fee). Checked 2026-10-07 02:06 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/3260-20th-st/