# Building permits at 1804 Mapleton Ave, Boulder, CO

Three permits here in the last two years. The newest, Mar 26: VOID- Inspections not completed within 180 days NOT A DUPLICATE System size: 21.4K BTU @ 5F w/ 24K (MAX). 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 |
|---|---|---|---|---|
| Mar 26, 2026 | Mechanical (HVAC) | VOID- Inspections not completed within 180 days NOT A DUPLICATE System size: 21.4K BTU @ 5F w/ 24K (MAX) Cooling - Existing gas backup System Components: (1) Lennox Indoor Coil - CK40CT-30A-71 (1) Lennox Air Conditioner - EL18KSLV-024-230 (1) EcoBee Smart Thermostat w/ Voice Control Electrical Upgra | $17,157 | [MEC2026-00448](https://nearbypermits.com/boulder/permit/MEC2026-00448/) |
| Dec 9, 2025 | Electrical | 5.59kW Roof-mounted residential solar system | $16,770 | [ELE2025-01189](https://nearbypermits.com/boulder/permit/ELE2025-01189/) |
| Oct 27, 2025 | Mechanical (HVAC) | Voided for inactivity - no inspection within 180 days Installing Lennox Heat Pump System Components: (1) Lennox Indoor Coil - CK40CT-30B-71 (1) Lennox Air Conditioner - EL18KSLV024-230 (1) Lennox L40 Smart Programmable Wifi Thermostat Homeowner will be using a 3rd party for all electrical work All n | $13,686 | [MEC2025-01856](https://nearbypermits.com/boulder/permit/MEC2025-01856/) |

## More on this street

Other addresses on Mapleton Ave with permits, nearest house number first:

- [1803 Mapleton Ave](https://nearbypermits.com/boulder/address/1803-mapleton-ave/): newest permit Feb 10, 2026
- [1829 Mapleton Ave](https://nearbypermits.com/boulder/address/1829-mapleton-ave/): newest permit Mar 6, 2026
- [1836 Mapleton Ave](https://nearbypermits.com/boulder/address/1836-mapleton-ave/): newest permit Apr 7, 2026
- [1730 Mapleton Ave](https://nearbypermits.com/boulder/address/1730-mapleton-ave/): newest permit Sep 8, 2025
- [1719 Mapleton Ave](https://nearbypermits.com/boulder/address/1719-mapleton-ave/): newest permit Sep 25, 2026
- [1713 Mapleton Ave](https://nearbypermits.com/boulder/address/1713-mapleton-ave/): newest permit Jan 8, 2026
- [1920 Mapleton Ave](https://nearbypermits.com/boulder/address/1920-mapleton-ave/): newest permit Sep 3, 2025
- [1928 Mapleton Ave](https://nearbypermits.com/boulder/address/1928-mapleton-ave/): newest permit Jun 18, 2026
- [1612 Mapleton Ave](https://nearbypermits.com/boulder/address/1612-mapleton-ave/): newest permit Jan 29, 2025
- [2004 Mapleton Ave](https://nearbypermits.com/boulder/address/2004-mapleton-ave/): newest permit Sep 2, 2026

---
Source: Boulder Planning and Development Services permit data (https://www.arcgis.com/home/item.html?id=e3ff6248e4a547bcba31025d2c5c9fee). Checked 2026-10-07 02:33 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/1804-mapleton-ave/