# Building permits at 2427 4th St, Boulder, CO

Two permits here in the last two years. The newest, Mar 7, 2025: Installation of a new complete NFPA 13D fire 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 |
|---|---|---|---|---|
| Mar 7, 2025 | Fire systems | Installation of a new complete NFPA 13D fire sprinkler system, with 3 bedrooms 3 baths and a single car garage. (Fsn13d) | $14,320 | [FIR2025-00069](https://nearbypermits.com/boulder/permit/FIR2025-00069/) |
| Jan 17, 2025 | Fire systems | New addressable fire alarm system with full occupant notification throughout. (FAN) | $8,769 | [FIR2025-00013](https://nearbypermits.com/boulder/permit/FIR2025-00013/) |

## More on this street

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

- [2425 4th St](https://nearbypermits.com/boulder/address/2425-4th-st/): newest permit Mar 28, 2025
- [2429 4th St](https://nearbypermits.com/boulder/address/2429-4th-st/): newest permit Dec 27, 2024
- [2431 4th St](https://nearbypermits.com/boulder/address/2431-4th-st/): newest permit Dec 16, 2024
- [2435 4th St](https://nearbypermits.com/boulder/address/2435-4th-st/): newest permit Aug 21, 2026
- [2436 4th St](https://nearbypermits.com/boulder/address/2436-4th-st/): newest permit Nov 3, 2025
- [2385 4th St](https://nearbypermits.com/boulder/address/2385-4th-st/): newest permit Aug 25, 2025
- [2521 4th St](https://nearbypermits.com/boulder/address/2521-4th-st/): newest permit Jun 23, 2025
- [2525 4th St](https://nearbypermits.com/boulder/address/2525-4th-st/): newest permit Aug 28, 2026
- [2529 4th St](https://nearbypermits.com/boulder/address/2529-4th-st/): newest permit Jul 16, 2026
- [2323 4th St](https://nearbypermits.com/boulder/address/2323-4th-st/): newest permit Jan 21, 2026

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Source: Boulder Planning and Development Services permit data (https://www.arcgis.com/home/item.html?id=e3ff6248e4a547bcba31025d2c5c9fee). Checked 2026-10-07 06:05 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/2427-4th-st/