# Building permits at 435 S 39th St, Boulder, CO

One permit here in the last two years. The newest, Sep 10, 2025: Permit voided due to inactivity - no activity within180 days Replacement furnace All new plastic glued vents. 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 10, 2025 | Mechanical (HVAC) | Permit voided due to inactivity - no activity within180 days Replacement furnace All new plastic glued vents for fuel burning appliances must undergo pressure testing. To facilitate the inspection process, please provide photographic evidence of the pressure test directly to the assigned inspector o | $5,093 | [MEC2025-01494](https://nearbypermits.com/boulder/permit/MEC2025-01494/) |

## More on this street

Other addresses on S 39th St with permits, nearest house number first:

- [430 S 39th St](https://nearbypermits.com/boulder/address/430-s-39th-st/): newest permit Apr 21, 2025
- [410 S 39th St](https://nearbypermits.com/boulder/address/410-s-39th-st/): newest permit Apr 23, 2026
- [465 S 39th St](https://nearbypermits.com/boulder/address/465-s-39th-st/): newest permit Jul 28, 2026
- [470 S 39th St](https://nearbypermits.com/boulder/address/470-s-39th-st/): newest permit Mar 27, 2025
- [345 S 39th St](https://nearbypermits.com/boulder/address/345-s-39th-st/): newest permit Aug 22, 2025
- [320 S 39th St](https://nearbypermits.com/boulder/address/320-s-39th-st/): newest permit Apr 16, 2026
- [280 S 39th St](https://nearbypermits.com/boulder/address/280-s-39th-st/): newest permit Oct 15, 2025
- [270 S 39th St](https://nearbypermits.com/boulder/address/270-s-39th-st/): newest permit Mar 16, 2026
- [265 S 39th St](https://nearbypermits.com/boulder/address/265-s-39th-st/): newest permit Oct 6, 2026
- [245 S 39th St](https://nearbypermits.com/boulder/address/245-s-39th-st/): newest permit Mar 2, 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 16:49 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/435-s-39th-st/