# Building permits at 4451 11th Ct B, Boulder, CO

One permit here in the last two years. The newest, Jun 25, 2025: This is a half of a NFPA#13D single family duplex. 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 |
|---|---|---|---|---|
| Jun 25, 2025 | Fire systems | This is a half of a NFPA#13D single family duplex. There are approx 8 sprinklers per unit and 16 total per duplex. (Fsn13d) | $4,050 | [FIR2025-00233](https://nearbypermits.com/boulder/permit/FIR2025-00233/) |

## More on this street

Other addresses on 11th Ct with permits, nearest house number first:

- [4461 11th Ct A](https://nearbypermits.com/boulder/address/4461-11th-ct-a/): newest permit Jun 25, 2025

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Source: Boulder Planning and Development Services permit data (https://www.arcgis.com/home/item.html?id=e3ff6248e4a547bcba31025d2c5c9fee). Checked 2026-10-08 08:51 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/4451-11th-ct-b/