# Building permits at 545 S 43rd St, Boulder, CO

Two permits here in the last two years. The newest, Sep 2, 2025: Solar installation SYSTEM SIZE: 7.74KWDC. 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 2, 2025 | Electrical | Solar installation SYSTEM SIZE: 7.74KWDC, 6.28KWAC · 18 Q CELL Q.TRON BLK M-G2+/AC MODULES · 18 Q CELL Q.MI.349B-G1 INVERTER Roof modifications for structural support permitted under BLD-SFD2025-00359. Structural work is to be performed to completion and pass inspections prior to electrical work beg | $22,296 | [ELE2025-00421](https://nearbypermits.com/boulder/permit/ELE2025-00421/) |
| Sep 2, 2025 | Alteration or repair | Rafter upgrades (rafter sistering scope) to allow for installation of rooftop solar panels. Please see permit ELE2025-00421 for scope specifics. | $1,000 | [BLD-SFD2025-00359](https://nearbypermits.com/boulder/permit/BLD-SFD2025-00359/) |

## More on this street

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

- [540 S 43rd St](https://nearbypermits.com/boulder/address/540-s-43rd-st/): newest permit Sep 26, 2025
- [555 S 43rd St](https://nearbypermits.com/boulder/address/555-s-43rd-st/): newest permit Nov 12, 2024
- [530 S 43rd St](https://nearbypermits.com/boulder/address/530-s-43rd-st/): newest permit Aug 29, 2025
- [520 S 43rd St](https://nearbypermits.com/boulder/address/520-s-43rd-st/): newest permit Jun 30, 2026
- [510 S 43rd St](https://nearbypermits.com/boulder/address/510-s-43rd-st/): newest permit Jun 22, 2026
- [505 S 43rd St](https://nearbypermits.com/boulder/address/505-s-43rd-st/): newest permit May 19, 2025
- [620 S 43rd St](https://nearbypermits.com/boulder/address/620-s-43rd-st/): newest permit Oct 20, 2025
- [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
- [440 S 43rd St](https://nearbypermits.com/boulder/address/440-s-43rd-st/): newest permit Oct 21, 2024

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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 03:53 UTC. Nearby Permits, https://nearbypermits.com. JSON API and MCP server: https://nearbypermits.com/developers/

Both permits at this address: https://nearbypermits.com/boulder/address/545-s-43rd-st/