# Building permits at 1350 Knox Dr, Boulder, CO

Eight permits on record here. The newest, Oct 21, 2025: *Voided for inactivity - no inspections for 180 days* Remove existing water heater and install 58 gallon. 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 21, 2025 | Mechanical (HVAC) | *Voided for inactivity - no inspections for 180 days* Remove existing water heater and install 58 gallon electric heat pump water heater. All new plastic glued vents for fuel burning appliances must undergo pressure testing. To facilitate the inspection process, please provide photographic evidence  | $3,500 | [MEC2025-01777](https://nearbypermits.com/boulder/permit/MEC2025-01777/) |
| Oct 17, 2025 | Mechanical (HVAC) | Installing Mitsubishi 4 ton heat pump system 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 assigned inspector on the day the rough mechanical inspe | $16,546 | [MEC2025-01747](https://nearbypermits.com/boulder/permit/MEC2025-01747/) |
| Sep 24, 2025 | Electrical | Roof-mounted solar installation with inverter-battery and service upgrade 5.74 kW DC | $38,706 | [ELE2025-00828](https://nearbypermits.com/boulder/permit/ELE2025-00828/) |
| Aug 22, 2025 | Roofing | All Structures must be permitted separately Total tear-off & reroof of SFD, 20 squares of dimensional shingles on a pitch represented as 4/12. All roof materials shall be installed per manufacturer?s specs. Mid-roof inspection is required if 1) pitch is less than 4/12 or 2) for any roof type other t | $10,000 | [RFG2025-00646](https://nearbypermits.com/boulder/permit/RFG2025-00646/) |
| Jul 10, 2018 | Electrical | 150 Amp service upgrade (existing overhead service) with grounding | $8,147 | [ELE2018-00505](https://nearbypermits.com/boulder/permit/ELE2018-00505/) |
| Nov 9, 2015 | Mechanical (HVAC) | Replacement Forced Air Furnace | $4,737 | [PMT2015-20363-MEC](https://nearbypermits.com/boulder/permit/PMT2015-20363-MEC/) |
| Aug 20, 2009 | Roofing | Tear-off & reroof of SFD, 23 squares on a pitch represented as 4/12. No overlay allowed, approved per the 2006 IRC and 1981 BRC as amended. Shingles to comply with ASTM D 225 or 3462 and ASTM D 3161 class F. | $5,800 | [PMT2009-03291-RFG](https://nearbypermits.com/boulder/permit/PMT2009-03291-RFG/) |
| Jun 4, 2008 | Mechanical (HVAC) | New Comfort Cooling | $2,968 | [PMT2008-20128-MEC](https://nearbypermits.com/boulder/permit/PMT2008-20128-MEC/) |

## More on this street

Other addresses on Knox Dr with permits, nearest house number first:

- [1500 Knox Dr](https://nearbypermits.com/boulder/address/1500-knox-dr/): newest permit Mar 17, 2026

---
Source: Boulder Planning and Development Services permit data (https://www.arcgis.com/home/item.html?id=e3ff6248e4a547bcba31025d2c5c9fee). Checked 2026-10-07 12:20 UTC. Nearby Permits, https://nearbypermits.com. JSON API and MCP server: https://nearbypermits.com/developers/

All 8 permits at this address: https://nearbypermits.com/boulder/address/1350-knox-dr/