# Building permits at 640 S 41st St, Boulder, CO

One permit here in the last two years. The newest, Aug 20: 2 Ton electric heat pump installation replacing an existing gas furnace. 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 |
|---|---|---|---|---|
| Aug 20, 2026 | Mechanical (HVAC) | 2 Ton electric heat pump installation replacing an existing gas furnace. The gas line will be capped at the removed furnace location. Need to disconnect the electrical from the old HVAC and connect it to the new HVAC. PLEASE NOTE: APPLICABLE ONLY TO SYSTEMS WITH FUEL BURNING APPLIANCES: All new plas | $16,995 | [MEC2026-01413](https://nearbypermits.com/boulder/permit/MEC2026-01413/) |

## More on this street

Other addresses on S 41st St with permits, nearest house number first:

- [630 S 41st St](https://nearbypermits.com/boulder/address/630-s-41st-st/): newest permit Nov 6, 2024
- [650 S 41st St](https://nearbypermits.com/boulder/address/650-s-41st-st/): newest permit Apr 15, 2025
- [610 S 41st St](https://nearbypermits.com/boulder/address/610-s-41st-st/): newest permit Dec 18, 2025
- [605 S 41st St](https://nearbypermits.com/boulder/address/605-s-41st-st/): newest permit Dec 3, 2025
- [560 S 41st St](https://nearbypermits.com/boulder/address/560-s-41st-st/): newest permit Dec 3, 2024
- [545 S 41st St](https://nearbypermits.com/boulder/address/545-s-41st-st/): newest permit Feb 24, 2025
- [540 S 41st St](https://nearbypermits.com/boulder/address/540-s-41st-st/): newest permit Nov 13, 2024
- [740 S 41st St](https://nearbypermits.com/boulder/address/740-s-41st-st/): newest permit Jul 1, 2026
- [750 S 41st St](https://nearbypermits.com/boulder/address/750-s-41st-st/): newest permit Jan 8, 2026
- [515 S 41st St](https://nearbypermits.com/boulder/address/515-s-41st-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 2026-10-08 06:11 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/640-s-41st-st/