# Building permits at 3050 18th St, Boulder, CO

Eight permits on record here. The newest, Aug 26: Installation of a flush mount, grid-tied. 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 |
|---|---|---|---|---|
| Aug 26, 2026 | Electrical | Installation of a flush mount, grid-tied, 3.480 kW solar PV system and one Tesla Powerwall 3 battery. Addition to an existing PV solar system. | $24,121 | [ELE2026-00859](https://nearbypermits.com/boulder/permit/ELE2026-00859/) |
| Jan 19, 2021 | Mechanical (HVAC) | *Voided for inactivity - no inspections within 180 days* INSTALL 80,000 BTU 96% FURNACE INSTALL 2.5 TON 16 SEER HEATPUMP | $11,004 | [MEC2021-00085](https://nearbypermits.com/boulder/permit/MEC2021-00085/) |
| Nov 10, 2011 | Electrical | Installation of a 4.83 kW solar array, flush mounted and grid tied | $28,900 | [PMT2011-04939-ELE](https://nearbypermits.com/boulder/permit/PMT2011-04939-ELE/) |
| Oct 3, 2011 | Electrical | Temporary construction power associated with addition and remodel of existing single family dwelling. | Not listed | [PMT2011-04216-ELE](https://nearbypermits.com/boulder/permit/PMT2011-04216-ELE/) |
| Sep 16, 2011 | Plumbing | Addition and Remodel - For first floor addition 87 sf and second floor addition 671 sf to existing SFD. Also includes complete remodel of 1,541 sf to first floor. Includes electrical, mechanical, and plumbing. | $9,000 | [PMT2011-02924-PLB](https://nearbypermits.com/boulder/permit/PMT2011-02924-PLB/) |
| Sep 16, 2011 | Mechanical (HVAC) | Addition and Remodel - For first floor addition 87 sf and second floor addition 671 sf to existing SFD. Also includes complete remodel of 1,541 sf to first floor. Includes electrical, mechanical, and plumbing. | $4,000 | [PMT2011-02924-MEC](https://nearbypermits.com/boulder/permit/PMT2011-02924-MEC/) |
| Sep 16, 2011 | Electrical | Addition and Remodel - For first floor addition 87 sf and second floor addition 671 sf to existing SFD. Also includes complete remodel of 1,541 sf to first floor. Includes electrical, mechanical, and plumbing. | $8,500 | [PMT2011-02924-ELE](https://nearbypermits.com/boulder/permit/PMT2011-02924-ELE/) |
| Sep 16, 2011 | Addition | Addition and Remodel - For first floor addition 87 sf and second floor addition 671 sf to existing SFD. Also includes complete remodel of 1,541 sf to first floor. Includes electrical, mechanical, and plumbing. | $217,000 | [PMT2011-02924](https://nearbypermits.com/boulder/permit/PMT2011-02924/) |

## More on this street

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

- [3060 18th St](https://nearbypermits.com/boulder/address/3060-18th-st/): newest permit Jan 14, 2026
- [3040 18th St](https://nearbypermits.com/boulder/address/3040-18th-st/): newest permit Jun 9, 2026
- [3035 18th St](https://nearbypermits.com/boulder/address/3035-18th-st/): newest permit Dec 3, 2025
- [3025 18th St](https://nearbypermits.com/boulder/address/3025-18th-st/): newest permit Jun 1, 2026
- [3075 18th St](https://nearbypermits.com/boulder/address/3075-18th-st/): newest permit Jan 28, 2026
- [3010 18th St](https://nearbypermits.com/boulder/address/3010-18th-st/): newest permit Sep 1, 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 07:42 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/3050-18th-st/