# Building permits at 355 S 43rd St, Boulder, CO

One permit here in the last two years. The newest, Aug 11: Duplicate permit for WH replacement 65-gallon to 50-gallon WH. 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 11, 2026 | Mechanical (HVAC) | Duplicate permit for WH replacement 65-gallon to 50-gallon WH. Previous permit was voided due to non-inspection. Permit to complete inspections. We reached out to the homeowner multiple times to schedule with no response. Previous permit MEC2023-01698. | $500 | [MEC2026-01349](https://nearbypermits.com/boulder/permit/MEC2026-01349/) |

## More on this street

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

- [365 S 43rd St](https://nearbypermits.com/boulder/address/365-s-43rd-st/): newest permit Sep 5, 2025
- [370 S 43rd St](https://nearbypermits.com/boulder/address/370-s-43rd-st/): newest permit Mar 25, 2025
- [380 S 43rd St](https://nearbypermits.com/boulder/address/380-s-43rd-st/): newest permit Jan 24, 2025
- [410 S 43rd St](https://nearbypermits.com/boulder/address/410-s-43rd-st/): newest permit Jun 27, 2025
- [415 S 43rd St](https://nearbypermits.com/boulder/address/415-s-43rd-st/): newest permit May 2, 2025
- [420 S 43rd St](https://nearbypermits.com/boulder/address/420-s-43rd-st/): newest permit Jul 23, 2026
- [435 S 43rd St](https://nearbypermits.com/boulder/address/435-s-43rd-st/): newest permit Sep 14, 2026
- [440 S 43rd St](https://nearbypermits.com/boulder/address/440-s-43rd-st/): newest permit Oct 21, 2024
- [505 S 43rd St](https://nearbypermits.com/boulder/address/505-s-43rd-st/): newest permit May 19, 2025
- [510 S 43rd St](https://nearbypermits.com/boulder/address/510-s-43rd-st/): newest permit Jun 22, 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/355-s-43rd-st/