# Building permits at 2860 21st St, Boulder, CO

Six permits on record here. The newest, Aug 18: The Company will furnish and install the following system on the Property. 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 |
|---|---|---|---|---|
| Aug 18, 2026 | Mechanical (HVAC) | The Company will furnish and install the following system on the Property, including professional installation, materials, and permitting: 1× - Mitsubishi Outdoor Unit - MXZ-2D20NLHZ - Outdoor unit 1x - Mitsubishi HiWall - MSZ-GX12NL - Living room 1× - Mitsubishi HiWall - MSZ-GX09NL - Master bedroom | $14,232 | [MEC2026-01467](https://nearbypermits.com/boulder/permit/MEC2026-01467/) |
| Apr 25, 2023 | Electrical | 200A service upgrade | $1,800 | [ELE2023-00406](https://nearbypermits.com/boulder/permit/ELE2023-00406/) |
| Nov 14, 2006 | Mechanical (HVAC) | Mechanical permit to replace forced-air furnace. | $3,744 | [PMT2006-04881-MEC](https://nearbypermits.com/boulder/permit/PMT2006-04881-MEC/) |
| Mar 14, 2005 | Plumbing | Remodel of bathroom. | $1,400 | [PMT2005-00895-PLB](https://nearbypermits.com/boulder/permit/PMT2005-00895-PLB/) |
| Mar 14, 2005 | Electrical | Remodel of bathroom. | $1,255 | [PMT2005-00895-ELE](https://nearbypermits.com/boulder/permit/PMT2005-00895-ELE/) |
| Mar 14, 2005 | New building | Remodel of bathroom. | $5,000 | [PMT2005-00895](https://nearbypermits.com/boulder/permit/PMT2005-00895/) |

## More on this street

Other addresses on 21st St with permits, nearest house number first:

- [2881 21st St](https://nearbypermits.com/boulder/address/2881-21st-st/): newest permit Sep 23, 2026
- [2820 21st St](https://nearbypermits.com/boulder/address/2820-21st-st/): newest permit Jul 28, 2026
- [2921 21st St](https://nearbypermits.com/boulder/address/2921-21st-st/): newest permit Oct 7, 2025
- [2941 21st St](https://nearbypermits.com/boulder/address/2941-21st-st/): newest permit Nov 18, 2025
- [2980 21st St](https://nearbypermits.com/boulder/address/2980-21st-st/): newest permit Jul 20, 2026
- [2327 21st St](https://nearbypermits.com/boulder/address/2327-21st-st/): newest permit Aug 25, 2026
- [2225 21st St](https://nearbypermits.com/boulder/address/2225-21st-st/): newest permit Apr 9, 2026
- [3621 21st St](https://nearbypermits.com/boulder/address/3621-21st-st/): newest permit Jun 24, 2026
- [3633 21st St](https://nearbypermits.com/boulder/address/3633-21st-st/): newest permit Oct 10, 2024
- [3639 21st St](https://nearbypermits.com/boulder/address/3639-21st-st/): newest permit Dec 6, 2024

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Source: Boulder Planning and Development Services permit data (https://www.arcgis.com/home/item.html?id=e3ff6248e4a547bcba31025d2c5c9fee). Checked 2026-10-08 09:53 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/2860-21st-st/