# Building permits at 1444 Cassin Ct, Boulder, CO 16 permits on record here. The newest, Apr 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 | |---|---|---|---|---| | Apr 17, 2026 | Electrical | ESS battery. Installation of two Tesla Powerwall 3 batteries, retrofit to an existing PV solar system. | $17,039 | [ELE2026-00366](https://nearbypermits.com/boulder/permit/ELE2026-00366/) | | Feb 27, 2026 | Mechanical (HVAC) | Replacement water heater and new by pass humidifier. Any electrical work required beyond a like-for-like replacement of equipment will require an electrical permit for inspection of the electrical scope. PLEASE NOTE: APPLICABLE ONLY TO SYSTEMS WITH FUEL BURNING APPLIANCES: All new plastic glued vent | $2,492 | [MEC2026-00306](https://nearbypermits.com/boulder/permit/MEC2026-00306/) | | Jun 27, 2025 | Mechanical (HVAC) | Replace AC - new 4.0 Ton 15 SEER2 AC | $14,366 | [MEC2025-01006](https://nearbypermits.com/boulder/permit/MEC2025-01006/) | | Nov 1, 2023 | Mechanical (HVAC) | Remove and replace furnace | $4,352 | [MEC2023-01607](https://nearbypermits.com/boulder/permit/MEC2023-01607/) | | Jun 1, 2022 | Electrical | Installation of a flush mount, grid-tied 17.38 kW PV solar system. | $32,770 | [ELE2022-00783](https://nearbypermits.com/boulder/permit/ELE2022-00783/) | | May 10, 2022 | Roofing | PV SOLAR SYSTEM TO BE REMOVED AND NOT REINSTALLED PER CONTRACTOR Total tear-off & reroof of SFD, 32 squares of dimensional shingles on a pitch represented as 5/12. All roof materials shall be installed per manufacturer?s specs. Mid-roof inspection required if pitch is less than 4/12. | $16,500 | [RFG2022-00361](https://nearbypermits.com/boulder/permit/RFG2022-00361/) | | Apr 11, 2019 | Mechanical (HVAC) | *Install ductless outdoor heat pump and one indoor head. Installation per manufacturer?s specifications. | $4,133 | [MEC2019-00500](https://nearbypermits.com/boulder/permit/MEC2019-00500/) | | Nov 10, 2016 | Mechanical (HVAC) | Installation of a replacement gas fired, 38k BTU, 50 gallon water heater. Install thermal expansion device, service outlet and carbon monoxide detector(s) per code. | $1,323 | [PMT2016-05206-MEC](https://nearbypermits.com/boulder/permit/PMT2016-05206-MEC/) | | Jul 1, 2008 | Electrical | Addition to existing PV system (5.53 Kw), grid-tie, flush mount. | $7,626 | [PMT2008-02713-ELE](https://nearbypermits.com/boulder/permit/PMT2008-02713-ELE/) | | Jun 1, 2006 | Electrical | New flush mounted photovoltaic system | $5,880 | [PMT2006-02078-ELE](https://nearbypermits.com/boulder/permit/PMT2006-02078-ELE/) | | Oct 15, 2003 | Fence, wall or deck | New 6' high cedar fence along rear and sides of property, returning to near front of house from sides. | $2,600 | [PMT2003-04265-FEN](https://nearbypermits.com/boulder/permit/PMT2003-04265-FEN/) | | Apr 24, 2003 | Roofing | Total tear off and overlay of 35 squares with dimensional shingles, 5/12 pitch. | $4,358 | [PMT2003-01518-RFG](https://nearbypermits.com/boulder/permit/PMT2003-01518-RFG/) | | Sep 26, 2002 | Electrical | Install 220 volt wiring for new hot tub inset into existing deck, and the installation of two gates at bottom of existing stairs to meet barrier fence requirement (existing deck no plans submitted with application). | $750 | [PMT2002-04243-ELE](https://nearbypermits.com/boulder/permit/PMT2002-04243-ELE/) | | Sep 26, 2002 | Fence, wall or deck | Install 220 volt wiring for new hot tub inset into existing deck, and the installation of two gates at bottom of existing stairs to meet barrier fence requirement (existing deck no plans submitted with application). | $950 | [PMT2002-04243](https://nearbypermits.com/boulder/permit/PMT2002-04243/) | | Mar 20, 1991 | Addition | Deck the original general permit number is 7079. | $1,400 | [PMT1991-07079](https://nearbypermits.com/boulder/permit/PMT1991-07079/) | | Oct 1, 1990 | New building | 1 Dw un. The original general permit number is r3303. | $140,000 | [PMT1990-R3303](https://nearbypermits.com/boulder/permit/PMT1990-R3303/) | ## More on this street Other addresses on Cassin Ct with permits, nearest house number first: - [1456 Cassin Ct](https://nearbypermits.com/boulder/address/1456-cassin-ct/): newest permit Nov 18, 2025 - [1428 Cassin Ct](https://nearbypermits.com/boulder/address/1428-cassin-ct/): newest permit Dec 11, 2024 - [1468 Cassin Ct](https://nearbypermits.com/boulder/address/1468-cassin-ct/): newest permit Feb 19, 2025 - [1469 Cassin Ct](https://nearbypermits.com/boulder/address/1469-cassin-ct/): newest permit Jun 11, 2026 --- Source: Boulder Planning and Development Services permit data (https://www.arcgis.com/home/item.html?id=e3ff6248e4a547bcba31025d2c5c9fee). Checked 2026-10-06 12:33 UTC. Nearby Permits, https://nearbypermits.com. JSON API and MCP server: https://nearbypermits.com/developers/ All 16 permits at this address: https://nearbypermits.com/boulder/address/1444-cassin-ct/