# Building permits at 50 S 31st St, Boulder, CO

Two permits on record here. The newest, Oct 7, 2025: Existing 6.45 kW roof-mounted solar installation permitted under PMT2011-03223 to be removed. 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 7, 2025 | Electrical | Existing 6.45 kW roof-mounted solar installation permitted under PMT2011-03223 to be removed. New 10.66 kW DC roof mounted solar installation. | $26,182 | [ELE2025-00943](https://nearbypermits.com/boulder/permit/ELE2025-00943/) |
| Sep 22, 2025 | Electrical | upgrade service to 200 amp service, includes 200 amp meter lever bypass, 40/80 space Nema 3 panel with 200 amp main breaker, Swap out any existing breakers on exterior panel only to Arc Fault breakers per code. Make inside panel a sub panel. Install Whole House Surge protection on exterior panel, Ad | $1,440 | [ELE2025-00937](https://nearbypermits.com/boulder/permit/ELE2025-00937/) |

## Zoning requests nearby

We don't list zoning cases for Boulder yet. Look them up on the city's Board of Zoning Adjustment page: https://bouldercolorado.gov/government/board-commission/board-zoning-adjustment

## More on this street

Other addresses on S 31st St with permits, nearest house number first:

- [70 S 31st St](https://nearbypermits.com/boulder/address/70-s-31st-st/): newest permit Jul 8, 2025
- [18 S 31st St](https://nearbypermits.com/boulder/address/18-s-31st-st/): newest permit Oct 7, 2025
- [90 S 31st St](https://nearbypermits.com/boulder/address/90-s-31st-st/): newest permit Dec 10, 2025
- [105 S 31st St](https://nearbypermits.com/boulder/address/105-s-31st-st/): newest permit Apr 9, 2026
- [120 S 31st St](https://nearbypermits.com/boulder/address/120-s-31st-st/): newest permit Sep 15, 2026
- [170 S 31st St](https://nearbypermits.com/boulder/address/170-s-31st-st/): newest permit Aug 4, 2026
- [180 S 31st St](https://nearbypermits.com/boulder/address/180-s-31st-st/): newest permit Jun 9, 2026

---
Source: Boulder Planning and Development Services permit data (https://www.arcgis.com/home/item.html?id=e3ff6248e4a547bcba31025d2c5c9fee). Checked 2026-10-15 09:39 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/50-s-31st-st/