# Building permits at 3143 8th St, Boulder, CO

One permit here in the last two years. The newest, Jul 23: Replacing natural gas cast iron boiler and all supplemental components with similar natural gas cast iron. 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 |
|---|---|---|---|---|
| Jul 23, 2026 | Mechanical (HVAC) | Replacing natural gas cast iron boiler and all supplemental components with similar natural gas cast iron boiler and components. PLEASE NOTE: APPLICABLE ONLY TO SYSTEMS WITH FUEL BURNING APPLIANCES: All new plastic glued vents for fuel burning appliances must undergo pressure testing. To facilitate  | $24,388 | [MEC2026-01234](https://nearbypermits.com/boulder/permit/MEC2026-01234/) |

## More on this street

Other addresses on 8th St with permits, nearest house number first:

- [3147 8th St](https://nearbypermits.com/boulder/address/3147-8th-st/): newest permit Sep 4, 2026
- [3135 8th St](https://nearbypermits.com/boulder/address/3135-8th-st/): newest permit Jun 3, 2025
- [3132 8th St](https://nearbypermits.com/boulder/address/3132-8th-st/): newest permit Jul 1, 2025
- [3166 8th St](https://nearbypermits.com/boulder/address/3166-8th-st/): newest permit Dec 3, 2024
- [3176 8th St](https://nearbypermits.com/boulder/address/3176-8th-st/): newest permit Jul 21, 2025
- [3186 8th St](https://nearbypermits.com/boulder/address/3186-8th-st/): newest permit Oct 2, 2026
- [3093 8th St](https://nearbypermits.com/boulder/address/3093-8th-st/): newest permit Sep 3, 2026
- [3083 8th St](https://nearbypermits.com/boulder/address/3083-8th-st/): newest permit Nov 6, 2025
- [3080 8th St](https://nearbypermits.com/boulder/address/3080-8th-st/): newest permit Feb 25, 2026
- [3055 8th St](https://nearbypermits.com/boulder/address/3055-8th-st/): newest permit Aug 27, 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 16:11 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/3143-8th-st/