# Building permits at 2121 4th St, Boulder, CO

One permit here in the last two years. The newest, Dec 20, 2024: Replacing 200A Main Lug Panel [emergency replacement]. 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 20, 2024 | Electrical | Replacing 200A Main Lug Panel [emergency replacement] | $10,080 | [ELE2024-01074](https://nearbypermits.com/boulder/permit/ELE2024-01074/) |

## More on this street

Other addresses on 4th St with permits, nearest house number first:

- [2110 4th St](https://nearbypermits.com/boulder/address/2110-4th-st/): newest permit Sep 8, 2025
- [2137 4th St](https://nearbypermits.com/boulder/address/2137-4th-st/): newest permit Dec 5, 2024
- [2035 4th St](https://nearbypermits.com/boulder/address/2035-4th-st/): newest permit May 14, 2025
- [2233 4th St](https://nearbypermits.com/boulder/address/2233-4th-st/): newest permit Jul 8, 2026
- [2237 4th St](https://nearbypermits.com/boulder/address/2237-4th-st/): newest permit Mar 5, 2026
- [2241 4th St](https://nearbypermits.com/boulder/address/2241-4th-st/): newest permit Jun 11, 2026
- [2299 4th St](https://nearbypermits.com/boulder/address/2299-4th-st/): newest permit Aug 20, 2025
- [2305 4th St](https://nearbypermits.com/boulder/address/2305-4th-st/): newest permit Sep 10, 2026
- [2323 4th St](https://nearbypermits.com/boulder/address/2323-4th-st/): newest permit Jan 21, 2026
- [2385 4th St](https://nearbypermits.com/boulder/address/2385-4th-st/): newest permit Aug 25, 2025

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Source: Boulder Planning and Development Services permit data (https://www.arcgis.com/home/item.html?id=e3ff6248e4a547bcba31025d2c5c9fee). Checked 2026-10-06 12:05 UTC. Nearby Permits, https://nearbypermits.com. JSON API and MCP server: https://nearbypermits.com/developers/

The one permit at this address: https://nearbypermits.com/boulder/address/2121-4th-st/