# Building permits at 650 Hawthorn Ave, Boulder, CO 14 permits on record here. The newest, May 18: Replace a one head mini split with a like for like one head mini split. 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 | |---|---|---|---|---| | May 18, 2026 | Mechanical (HVAC) | Replace a one head mini split with a like for like one head mini split. Any electrical work required beyond a like-for-like replacement of equipment will require an electrical permit for inspection of the electrical scope. | $4,797 | [MEC2026-00781](https://nearbypermits.com/boulder/permit/MEC2026-00781/) | | Oct 2, 2014 | Mechanical (HVAC) | Replacement of 96,000 btu forced air furnace and hot water heater in basement of residence. Furnace is direct replacement of original, no new ductwork proposed. | $5,000 | [PMT2014-04538-MEC](https://nearbypermits.com/boulder/permit/PMT2014-04538-MEC/) | | Nov 16, 2012 | Electrical | Construction of a 499.5 sf garage/workshop in the rear of the lot. 252 sf parking area, 247.5 workshop area. Includes associated electrical, no plumbing, no mechanical. | $1,000 | [PMT2012-01577-ELE](https://nearbypermits.com/boulder/permit/PMT2012-01577-ELE/) | | Nov 16, 2012 | New building | Construction of a 499.5 sf garage/workshop in the rear of the lot. 252 sf parking area, 247.5 workshop area. Includes associated electrical, no plumbing, no mechanical. | $27,245 | [PMT2012-01577](https://nearbypermits.com/boulder/permit/PMT2012-01577/) | | May 10, 2012 | Fence, wall or deck | Relocation of existing cedar privacy fence along south property boundary | $1,000 | [PMT2012-02255-FEN](https://nearbypermits.com/boulder/permit/PMT2012-02255-FEN/) | | Dec 15, 2011 | Electrical | Installation of a flush mount grid-tie 3.87 kW photovoltaic system Array to remain below ridge, inside/below hips and rake edges, and above eave. See engineer's letter and drawing for specific information. | $19,630 | [PMT2011-05459-ELE](https://nearbypermits.com/boulder/permit/PMT2011-05459-ELE/) | | Jun 17, 2011 | Plumbing | Second floor addition on front portion of single-family residence, installation of front porch, interior remodel of residence. Enlarge existing basement and create loft storage area above second story addition. | $4,000 | [PMT2011-02080-PLB](https://nearbypermits.com/boulder/permit/PMT2011-02080-PLB/) | | Jun 17, 2011 | Mechanical (HVAC) | Second floor addition on front portion of single-family residence, installation of front porch, interior remodel of residence. Enlarge existing basement and create loft storage area above second story addition. | $11,500 | [PMT2011-02080-MEC](https://nearbypermits.com/boulder/permit/PMT2011-02080-MEC/) | | Jun 17, 2011 | Electrical | Second floor addition on front portion of single-family residence, installation of front porch, interior remodel of residence. Enlarge existing basement and create loft storage area above second story addition. | $8,000 | [PMT2011-02080-ELE](https://nearbypermits.com/boulder/permit/PMT2011-02080-ELE/) | | Jun 17, 2011 | Addition | Second floor addition on front portion of single-family residence, installation of front porch, interior remodel of residence. Enlarge existing basement and create loft storage area above second story addition. | $133,500 | [PMT2011-02080](https://nearbypermits.com/boulder/permit/PMT2011-02080/) | | May 26, 2011 | Demolition | Inerior non-structural demolition of single family dwelling. Building permit for addition and remodel in review under PMT2011-02080. | Not listed | [PMT2011-02146-DEM](https://nearbypermits.com/boulder/permit/PMT2011-02146-DEM/) | | Aug 21, 2008 | Fence, wall or deck | New 5 foot fence on west side. 84 linear | $1,500 | [PMT2008-03639-FEN](https://nearbypermits.com/boulder/permit/PMT2008-03639-FEN/) | | Apr 20, 1989 | Mechanical (HVAC) | Mechanical WATER HEATER | $283 | [PMT1989-P2028-MEC](https://nearbypermits.com/boulder/permit/PMT1989-P2028-MEC/) | | Mar 15, 1989 | Mechanical (HVAC) | Mechanical replace water heater | $283 | [PMT1989-P1186-MEC](https://nearbypermits.com/boulder/permit/PMT1989-P1186-MEC/) | ## Zoning requests nearby We don't list zoning cases for Boulder yet. Look them up on the city's Board of Zoning Adjustment page: https://bouldercolorado.gov/government/board-commission/board-zoning-adjustment ## More on this street Other addresses on Hawthorn Ave with permits, nearest house number first: - [625 Hawthorn Ave](https://nearbypermits.com/boulder/address/625-hawthorn-ave/): newest permit Feb 19, 2026 - [605 Hawthorn Ave](https://nearbypermits.com/boulder/address/605-hawthorn-ave/): newest permit Sep 10, 2026 - [600 Hawthorn Ave](https://nearbypermits.com/boulder/address/600-hawthorn-ave/): newest permit May 5, 2025 - [700 Hawthorn Ave](https://nearbypermits.com/boulder/address/700-hawthorn-ave/): newest permit Apr 8, 2026 - [701 Hawthorn Ave](https://nearbypermits.com/boulder/address/701-hawthorn-ave/): newest permit Mar 5, 2026 - [740 Hawthorn Ave](https://nearbypermits.com/boulder/address/740-hawthorn-ave/): newest permit Jun 16, 2026 - [755 Hawthorn Ave](https://nearbypermits.com/boulder/address/755-hawthorn-ave/): newest permit Aug 20, 2025 - [535 Hawthorn Ave](https://nearbypermits.com/boulder/address/535-hawthorn-ave/): newest permit Jun 24, 2026 - [512 Hawthorn Ave](https://nearbypermits.com/boulder/address/512-hawthorn-ave/): newest permit May 21, 2025 - [801 Hawthorn Ave](https://nearbypermits.com/boulder/address/801-hawthorn-ave/): newest permit Sep 14, 2026 --- Source: Boulder Planning and Development Services permit data (https://www.arcgis.com/home/item.html?id=e3ff6248e4a547bcba31025d2c5c9fee). Checked 2026-10-13 09:10 UTC. Nearby Permits, https://nearbypermits.com. JSON API and MCP server: https://nearbypermits.com/developers/ All 14 permits at this address: https://nearbypermits.com/boulder/address/650-hawthorn-ave/