# Building permits at 2306 Keystone Ct, Boulder, CO 11 permits on record here. The newest, Jul 2: ESS installation for single family dwelling - SYSTEM SIZE: 13.50KWHAC · 1 TESLA POWERWALL 3. 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 | |---|---|---|---|---| | Jul 2, 2026 | Electrical | ESS installation for single family dwelling - SYSTEM SIZE: 13.50KWHAC · 1 TESLA POWERWALL 3, 13.50KWH BATTERY - installed in interior mechanical room *See PMT2010-05318-ELE for existing PV | $20,315 | [ELE2026-00629](https://nearbypermits.com/boulder/permit/ELE2026-00629/) | | Jan 22, 2025 | Addition | Voided for inactivity - no inspection within 180 days *Reinstatement permit for PMT2010-03265.* Addition of master bedroom and bath, 624 sf, above existing garage, 71 sf addition to kitchen on first floor, remodel of first floor kitchen, and replace cover over 60 sf front porch. Photovoltaic solar s | Not listed | [BLD-SFD2024-00451](https://nearbypermits.com/boulder/permit/BLD-SFD2024-00451/) | | Sep 20, 2024 | Electrical | Voided for inactivity - no inspection within 180 days New wiring for additional living space above garage and Wiring for living area, bedroom, and bathroom | $13,421 | [ELE2024-00782](https://nearbypermits.com/boulder/permit/ELE2024-00782/) | | Aug 15, 2024 | Electrical | 200A main panel upgrade. Install lever bypass meter install new 200a exterior panel update grounding update breakers | $4,500 | [ELE2024-00689](https://nearbypermits.com/boulder/permit/ELE2024-00689/) | | Nov 30, 2010 | Electrical | Installation of 5.64 kW solar array, flush mounted and grid tied. | $29,500 | [PMT2010-05318-ELE](https://nearbypermits.com/boulder/permit/PMT2010-05318-ELE/) | | Aug 31, 2010 | Plumbing | Additon of master bedroom and bath, 624 s.f., above existing garage, 71 s.f. addition to kitchen on first floor, remodel of first floor kitchen, and replace cover over 60 s.f. front porch. Photovoltaic solar system through separate permit. | $4,000 | [PMT2010-03265-PLB](https://nearbypermits.com/boulder/permit/PMT2010-03265-PLB/) | | Aug 31, 2010 | Mechanical (HVAC) | Additon of master bedroom and bath, 624 s.f., above existing garage, 71 s.f. addition to kitchen on first floor, remodel of first floor kitchen, and replace cover over 60 s.f. front porch. Photovoltaic solar system through separate permit. | $8,000 | [PMT2010-03265-MEC](https://nearbypermits.com/boulder/permit/PMT2010-03265-MEC/) | | Aug 31, 2010 | Electrical | Additon of master bedroom and bath, 624 s.f., above existing garage, 71 s.f. addition to kitchen on first floor, remodel of first floor kitchen, and replace cover over 60 s.f. front porch. Photovoltaic solar system through separate permit. | $4,000 | [PMT2010-03265-ELE](https://nearbypermits.com/boulder/permit/PMT2010-03265-ELE/) | | Aug 31, 2010 | Addition | Additon of master bedroom and bath, 624 s.f., above existing garage, 71 s.f. addition to kitchen on first floor, remodel of first floor kitchen, and replace cover over 60 s.f. front porch. Photovoltaic solar system through separate permit. | $76,115 | [PMT2010-03265](https://nearbypermits.com/boulder/permit/PMT2010-03265/) | | Aug 31, 2005 | Roofing | Partial tear-off and overlay of a single-family detached dwelling, dimensional shingles, 15 squares, 9/12 pitch. | $4,200 | [PMT2005-02873-RFG](https://nearbypermits.com/boulder/permit/PMT2005-02873-RFG/) | | Nov 5, 1990 | Mechanical (HVAC) | Mechanical WTR HTR | $250 | [PMT1990-R4486-MEC](https://nearbypermits.com/boulder/permit/PMT1990-R4486-MEC/) | ## More on this street Other addresses on Keystone Ct with permits, nearest house number first: - [2333 Keystone Ct](https://nearbypermits.com/boulder/address/2333-keystone-ct/): newest permit Jan 23, 2026 - [2414 Keystone Ct](https://nearbypermits.com/boulder/address/2414-keystone-ct/): newest permit Sep 28, 2026 --- Source: Boulder Planning and Development Services permit data (https://www.arcgis.com/home/item.html?id=e3ff6248e4a547bcba31025d2c5c9fee). Checked 2026-10-06 22:49 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/2306-keystone-ct/