# Building permits at 2950 18th St, Boulder, CO 11 permits on record here. The newest, Jun 17: ESS battery. 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 | |---|---|---|---|---| | Jun 17, 2026 | Electrical | ESS battery. Installation of one Tesla Powerwall 3 battery, retrofit to an existing PV solar system. | $9,416 | [ELE2026-00514](https://nearbypermits.com/boulder/permit/ELE2026-00514/) | | Mar 28, 2025 | Electrical | Installation of a flush mount, grid-tied, 8.400 kW solar PV system. | $18,521 | [ELE2025-00225](https://nearbypermits.com/boulder/permit/ELE2025-00225/) | | Jan 24, 2025 | Mechanical (HVAC) | Heat pump replacing air conditioner. Lennox Signature Variable Capacity Heat Pump - Up to 25 SEER rating, 3 ton capacity. Reuse electrical circuit for condenser. | $12,282 | [MEC2025-00144](https://nearbypermits.com/boulder/permit/MEC2025-00144/) | | Feb 25, 2022 | Mechanical (HVAC) | Replacement furnace | $7,728 | [MEC2022-00353](https://nearbypermits.com/boulder/permit/MEC2022-00353/) | | Sep 5, 2019 | Roofing | *Total tear off and reroof, dimensional shingles, 30 squares, 3:12 pitch. | $11,757 | [RFG2019-00985](https://nearbypermits.com/boulder/permit/RFG2019-00985/) | | May 9, 2016 | Mechanical (HVAC) | Install ductless 21k Btu A/C 20.2 SEER 30k Btu heating | $3,968 | [PMT2016-02036-MEC](https://nearbypermits.com/boulder/permit/PMT2016-02036-MEC/) | | May 9, 2016 | Electrical | Install ductless 21k Btu A/C 20.2 SEER 30k Btu heating | $500 | [PMT2016-02036-ELE](https://nearbypermits.com/boulder/permit/PMT2016-02036-ELE/) | | May 31, 2001 | Plumbing | Screen porch addition to rear of structure, elevated above grade +/- 5 feet, remodel bathroom, and add 3/4 bath. | $1,200 | [PMT2001-01766-PLB](https://nearbypermits.com/boulder/permit/PMT2001-01766-PLB/) | | May 31, 2001 | Electrical | Screen porch addition to rear of structure, elevated above grade +/- 5 feet, remodel bathroom, and add 3/4 bath. | $600 | [PMT2001-01766-ELE](https://nearbypermits.com/boulder/permit/PMT2001-01766-ELE/) | | May 31, 2001 | Addition | Screen porch addition to rear of structure, elevated above grade +/- 5 feet, remodel bathroom, and add 3/4 bath. | $29,000 | [PMT2001-01766](https://nearbypermits.com/boulder/permit/PMT2001-01766/) | | Dec 17, 1996 | Addition | Close in carport, add studio and porch the original general permit number is 9 | $30,000 | [PMT1996-08263](https://nearbypermits.com/boulder/permit/PMT1996-08263/) | ## More on this street Other addresses on 18th St with permits, nearest house number first: - [2940 18th St](https://nearbypermits.com/boulder/address/2940-18th-st/): newest permit Sep 4, 2026 - [2985 18th St](https://nearbypermits.com/boulder/address/2985-18th-st/): newest permit Dec 23, 2025 - [3010 18th St](https://nearbypermits.com/boulder/address/3010-18th-st/): newest permit Sep 1, 2026 - [2875 18th St](https://nearbypermits.com/boulder/address/2875-18th-st/): newest permit Sep 26, 2025 - [3025 18th St](https://nearbypermits.com/boulder/address/3025-18th-st/): newest permit Jun 1, 2026 - [3035 18th St](https://nearbypermits.com/boulder/address/3035-18th-st/): newest permit Dec 3, 2025 - [3040 18th St](https://nearbypermits.com/boulder/address/3040-18th-st/): newest permit Jun 9, 2026 - [2850 18th St](https://nearbypermits.com/boulder/address/2850-18th-st/): newest permit Aug 5, 2025 - [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 --- Source: Boulder Planning and Development Services permit data (https://www.arcgis.com/home/item.html?id=e3ff6248e4a547bcba31025d2c5c9fee). Checked 2026-10-06 15:51 UTC. Nearby Permits, https://nearbypermits.com. JSON API and MCP server: https://nearbypermits.com/developers/ All 11 permits at this address: https://nearbypermits.com/boulder/address/2950-18th-st/