# Building permits at 3333 23rd St, Boulder, CO

Two permits here in the last two years. The newest, May 5, 2025: Alteration to existing NFPA13D sprinkler system. 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 |
|---|---|---|---|---|
| May 5, 2025 | Fire systems | alteration to existing NFPA13D sprinkler system. (Fsr13d) | $2,658 | [FIR2025-00154](https://nearbypermits.com/boulder/permit/FIR2025-00154/) |
| Feb 5, 2025 | Addition | Main Level addition of 392SF with Crawlspace below. Resubmitted for a revision to the proposed impervious surface coverage on the site | $320,000 | [BLD-SFD2024-00225](https://nearbypermits.com/boulder/permit/BLD-SFD2024-00225/) |

## More on this street

Other addresses on 23rd St with permits, nearest house number first:

- [3445 23rd St](https://nearbypermits.com/boulder/address/3445-23rd-st/): newest permit Jul 3, 2025
- [3165 23rd St](https://nearbypermits.com/boulder/address/3165-23rd-st/): newest permit Aug 18, 2026
- [3505 23rd St](https://nearbypermits.com/boulder/address/3505-23rd-st/): newest permit Jan 2, 2026
- [3515 23rd St](https://nearbypermits.com/boulder/address/3515-23rd-st/): newest permit Apr 30, 2026
- [3145 23rd St](https://nearbypermits.com/boulder/address/3145-23rd-st/): newest permit Sep 26, 2025
- [3525 23rd St](https://nearbypermits.com/boulder/address/3525-23rd-st/): newest permit Jul 8, 2025
- [3140 23rd St](https://nearbypermits.com/boulder/address/3140-23rd-st/): newest permit Jun 3, 2026
- [3125 23rd St](https://nearbypermits.com/boulder/address/3125-23rd-st/): newest permit Sep 8, 2025
- [3105 23rd St](https://nearbypermits.com/boulder/address/3105-23rd-st/): newest permit Jun 30, 2026
- [3060 23rd St](https://nearbypermits.com/boulder/address/3060-23rd-st/): newest permit Oct 21, 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 12:18 UTC. Nearby Permits, https://nearbypermits.com. JSON API and MCP server: https://nearbypermits.com/developers/

Both permits at this address: https://nearbypermits.com/boulder/address/3333-23rd-st/