# Building permits at 345 Norton St, Boulder, CO

Three permits here in the last two years. The newest, Jan 16: Rooftop residential solar 10.12kW. 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 |
|---|---|---|---|---|
| Jan 16, 2026 | Electrical | Rooftop residential solar 10.12kW. REVISION 5/5/26-Roof layout updated. | $40,000 | [ELE2025-01163](https://nearbypermits.com/boulder/permit/ELE2025-01163/) |
| Oct 17, 2025 | Roofing | Mid-roof inspection is required if 1) pitch is less than 4/12 or 2) for any roof type other than asphalt shingles (regardless of pitch). For roof/attic assemblies requiring 1/150 ventilation, include a calculation detailing the quantity of intake and exhaust vents demonstrating 1/150 venting ratio c | $46,408 | [RFG2025-00832](https://nearbypermits.com/boulder/permit/RFG2025-00832/) |
| Jan 7, 2025 | Mechanical (HVAC) | Installation of a replacement, 199k BTU, 95% AFUE, gas fired boiler. Installation per manufacturer?s specifications and 2012 IRC Section M2001. | $13,711 | [MEC2025-00020](https://nearbypermits.com/boulder/permit/MEC2025-00020/) |

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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 09:06 UTC. Nearby Permits, https://nearbypermits.com. JSON API and MCP server: https://nearbypermits.com/developers/

All 3 permits at this address: https://nearbypermits.com/boulder/address/345-norton-st/