# Building permits at 620 S 43rd St, Boulder, CO

One permit here in the last two years. The newest, Oct 20, 2025: 21? duel fuel 97% heat pump, 21. 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 |
|---|---|---|---|---|
| Oct 20, 2025 | Mechanical (HVAC) | 21? duel fuel 97% heat pump, 21? evaporator coil, 2 ton heat pump condenser, Smart thermostat 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 assigne | $27,990 | [MEC2025-01756](https://nearbypermits.com/boulder/permit/MEC2025-01756/) |

## More on this street

Other addresses on S 43rd St with permits, nearest house number first:

- [625 S 43rd St](https://nearbypermits.com/boulder/address/625-s-43rd-st/): newest permit May 13, 2025
- [635 S 43rd St](https://nearbypermits.com/boulder/address/635-s-43rd-st/): newest permit Jan 13, 2026
- [650 S 43rd St](https://nearbypermits.com/boulder/address/650-s-43rd-st/): newest permit Apr 29, 2026
- [660 S 43rd St](https://nearbypermits.com/boulder/address/660-s-43rd-st/): newest permit Aug 11, 2026
- [555 S 43rd St](https://nearbypermits.com/boulder/address/555-s-43rd-st/): newest permit Nov 12, 2024
- [545 S 43rd St](https://nearbypermits.com/boulder/address/545-s-43rd-st/): newest permit Sep 2, 2025
- [540 S 43rd St](https://nearbypermits.com/boulder/address/540-s-43rd-st/): newest permit Sep 26, 2025
- [530 S 43rd St](https://nearbypermits.com/boulder/address/530-s-43rd-st/): newest permit Aug 29, 2025
- [710 S 43rd St](https://nearbypermits.com/boulder/address/710-s-43rd-st/): newest permit Oct 2, 2025
- [715 S 43rd St](https://nearbypermits.com/boulder/address/715-s-43rd-st/): newest permit Feb 10, 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 18:30 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/620-s-43rd-st/