# Building permits at 3161 7th St B, Boulder, CO

One permit on record here. The newest, Sep 3: New Auxillary Dwelling Unit installed with an NFPA 13D 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 |
|---|---|---|---|---|
| Sep 3, 2026 | Fire systems | New Auxillary Dwelling Unit installed with an NFPA 13D sprinkler system. The sprinkler system will be a wet system and will be required to be protected with insulation where piping is exposed to freezing temperatures. | $23,250 | [FIR2026-00302](https://nearbypermits.com/boulder/permit/FIR2026-00302/) |

## More on this street

Other addresses on 7th St with permits, nearest house number first:

- [3151 7th St](https://nearbypermits.com/boulder/address/3151-7th-st/): newest permit Mar 20, 2025
- [3139 7th St](https://nearbypermits.com/boulder/address/3139-7th-st/): newest permit Mar 6, 2025
- [3185 7th St](https://nearbypermits.com/boulder/address/3185-7th-st/): newest permit Jun 15, 2026
- [3121 7th St](https://nearbypermits.com/boulder/address/3121-7th-st/): newest permit Nov 18, 2025
- [3114 7th St](https://nearbypermits.com/boulder/address/3114-7th-st/): newest permit Aug 4, 2026
- [3211 7th St](https://nearbypermits.com/boulder/address/3211-7th-st/): newest permit Nov 5, 2024
- [3219 7th St](https://nearbypermits.com/boulder/address/3219-7th-st/): newest permit Jul 15, 2026
- [3091 7th St](https://nearbypermits.com/boulder/address/3091-7th-st/): newest permit Jan 17, 2025
- [3232 7th St](https://nearbypermits.com/boulder/address/3232-7th-st/): newest permit Apr 14, 2026
- [3234 7th St](https://nearbypermits.com/boulder/address/3234-7th-st/): newest permit Apr 22, 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 06:28 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/3161-7th-st-b/