# Building permits at 3035 18th St, Boulder, CO

Two permits here in the last two years. The newest, Dec 3, 2025: Permit Extension Granted- One time 180-day permit extension granted. 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 |
|---|---|---|---|---|
| Dec 3, 2025 | Electrical | Permit Extension Granted- One time 180-day permit extension granted. All work and inspections must be completed by 11/07/2026. If not completed, must maintain active inspections, called every 180 days, to keep permit from being voided.? Installation of a flush mount, grid-tied, 5.220 kW solar PV sys | $9,874 | [ELE2025-01229](https://nearbypermits.com/boulder/permit/ELE2025-01229/) |
| Jan 27, 2025 | Mechanical (HVAC) | New heat pump, air handler replacing furnace, and sub panel. Heat pump - 36,000 BTU/cooling capacity, SEER 20, 40,000 high heat, 9 HSPF. New subpanel and electrical circuit for condesner. | $13,250 | [MEC2025-00145](https://nearbypermits.com/boulder/permit/MEC2025-00145/) |

## More on this street

Other addresses on 18th St with permits, nearest house number first:

- [3040 18th St](https://nearbypermits.com/boulder/address/3040-18th-st/): newest permit Jun 9, 2026
- [3025 18th St](https://nearbypermits.com/boulder/address/3025-18th-st/): newest permit Jun 1, 2026
- [3050 18th St](https://nearbypermits.com/boulder/address/3050-18th-st/): newest permit Aug 26, 2026
- [3060 18th St](https://nearbypermits.com/boulder/address/3060-18th-st/): newest permit Jan 14, 2026
- [3010 18th St](https://nearbypermits.com/boulder/address/3010-18th-st/): newest permit Sep 1, 2026
- [3075 18th St](https://nearbypermits.com/boulder/address/3075-18th-st/): newest permit Jan 28, 2026
- [2985 18th St](https://nearbypermits.com/boulder/address/2985-18th-st/): newest permit Dec 23, 2025
- [2950 18th St](https://nearbypermits.com/boulder/address/2950-18th-st/): newest permit Jun 17, 2026
- [2940 18th St](https://nearbypermits.com/boulder/address/2940-18th-st/): newest permit Sep 4, 2026
- [3175 18th St](https://nearbypermits.com/boulder/address/3175-18th-st/): newest permit Nov 5, 2025

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Source: Boulder Planning and Development Services permit data (https://www.arcgis.com/home/item.html?id=e3ff6248e4a547bcba31025d2c5c9fee). Checked 2026-10-07 18:40 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/3035-18th-st/