# Building permits at 2831 20th St, Boulder, CO

Four permits on record here. The newest, Dec 18, 2024: 18 Seer Cold Climate Heat Pump. 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 |
|---|---|---|---|---|
| Dec 18, 2024 | Mechanical (HVAC) | 18 Seer Cold Climate Heat Pump | $10,500 | [MEC2024-01876](https://nearbypermits.com/boulder/permit/MEC2024-01876/) |
| Feb 15, 2019 | Mechanical (HVAC) | Installation of a replacement 80%, 80k BTU forced air furnace for a single family dwelling. | $5,500 | [MEC2019-00242](https://nearbypermits.com/boulder/permit/MEC2019-00242/) |
| May 21, 2009 | Roofing | Total tear off and reroof of existing single family dwelling. 30-yr asphalt shingle, 28 squares, 4/12 pitch. | $7,050 | [PMT2009-01748-RFG](https://nearbypermits.com/boulder/permit/PMT2009-01748-RFG/) |
| Nov 30, 1993 | New building | Detached storage shed in rear yard the original general permit number is 93889 | $2,000 | [PMT1993-08891](https://nearbypermits.com/boulder/permit/PMT1993-08891/) |

## More on this street

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

- [2840 20th St](https://nearbypermits.com/boulder/address/2840-20th-st/): newest permit Jun 24, 2026
- [2810 20th St](https://nearbypermits.com/boulder/address/2810-20th-st/): newest permit Jan 13, 2026
- [2800 20th St](https://nearbypermits.com/boulder/address/2800-20th-st/): newest permit Jun 25, 2025
- [2940 20th St](https://nearbypermits.com/boulder/address/2940-20th-st/): newest permit Jan 7, 2026
- [2980 20th St](https://nearbypermits.com/boulder/address/2980-20th-st/): newest permit Jan 6, 2025
- [3110 20th St](https://nearbypermits.com/boulder/address/3110-20th-st/): newest permit Jul 28, 2025
- [3115 20th St](https://nearbypermits.com/boulder/address/3115-20th-st/): newest permit Dec 16, 2025
- [3125 20th St](https://nearbypermits.com/boulder/address/3125-20th-st/): newest permit Jun 13, 2025
- [3145 20th St](https://nearbypermits.com/boulder/address/3145-20th-st/): newest permit Sep 18, 2026
- [3210 20th St](https://nearbypermits.com/boulder/address/3210-20th-st/): newest permit Jun 15, 2026

---
Source: Boulder Planning and Development Services permit data (https://www.arcgis.com/home/item.html?id=e3ff6248e4a547bcba31025d2c5c9fee). Checked 2026-10-07 04:17 UTC. Nearby Permits, https://nearbypermits.com. JSON API and MCP server: https://nearbypermits.com/developers/

All 4 permits at this address: https://nearbypermits.com/boulder/address/2831-20th-st/