# Building permits at 770 Union Ave, Boulder, CO 31 permits on record here. The newest, May 1, 2025: Replace existing front east and west balconies. 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 1, 2025 | Alteration or repair | Replace existing front east and west balconies. Expand west balcony ~30sf. Replace railing on both. Revision - expansion of deck(s) no longer included. | $8,000 | [BLD-SFD2024-00445](https://nearbypermits.com/boulder/permit/BLD-SFD2024-00445/) | | May 23, 2024 | Alteration or repair | Reconfigure primary bath & upper level bath. Revise three window openings in primary bath, enlarge 1 window opening in upper level bath. Refresh finishes in main & lower level baths. Replace all windows & doors per plans. Replace gypcrete radiant heat system w/ new warmboard in floor heating. | $209,749 | [BLD-SFD2024-00086](https://nearbypermits.com/boulder/permit/BLD-SFD2024-00086/) | | May 17, 2024 | Roofing | Total tear-off & reroof of SFD, 32 squares of dimensional shingles on a pitch represented as 4/12. All roof materials shall be installed per manufacturer?s specs. Mid-roof inspection required if pitch is less than 4/12. All roof covering materials shall be listed as Class A as tested in accordance w | $24,670 | [RFG2024-00275](https://nearbypermits.com/boulder/permit/RFG2024-00275/) | | Aug 6, 2021 | Mechanical (HVAC) | *Voided for inactivity - no inspections within 180 days* Installation of a new minisplit system which includes four indoor wall units plus one outdoor condensing unit. Subing out electrical. | $24,266 | [MEC2021-01378](https://nearbypermits.com/boulder/permit/MEC2021-01378/) | | Nov 20, 2020 | Electrical | *Addition of a 323 sf of exterior deck to the rear exterior of home and run electric to existing hot tub. Associated with ADR2020-00134. | $600 | [ELE2020-01135](https://nearbypermits.com/boulder/permit/ELE2020-01135/) | | Nov 20, 2020 | Addition | *Addition of a 323 sf of exterior deck to the rear exterior of home and run electric to existing hot tub. Associated with ADR2020-00134. | $7,878 | [BLD-ACC2020-00138](https://nearbypermits.com/boulder/permit/BLD-ACC2020-00138/) | | Oct 19, 2020 | Mechanical (HVAC) | VOID- 180 Days no activity *Replacing downstairs furnace with new furnace unit | $5,753 | [MEC2020-01664](https://nearbypermits.com/boulder/permit/MEC2020-01664/) | | Aug 4, 2020 | Plumbing | *Main level interior remodel to include new kitchen, new fireplace, update existing bath, update (2) patio doors and (2) windows, new flooring and update lighting. | $7,244 | [PLB2020-00373](https://nearbypermits.com/boulder/permit/PLB2020-00373/) | | Aug 4, 2020 | Mechanical (HVAC) | *Main level interior remodel to include new kitchen, new fireplace, update existing bath, update (2) patio doors and (2) windows, new flooring and update lighting. | $5,577 | [MEC2020-00858](https://nearbypermits.com/boulder/permit/MEC2020-00858/) | | Aug 4, 2020 | Electrical | *Main level interior remodel to include new kitchen, new fireplace, update existing bath, update (2) patio doors and (2) windows, new flooring and update lighting. | $16,391 | [ELE2020-00785](https://nearbypermits.com/boulder/permit/ELE2020-00785/) | | Aug 4, 2020 | Alteration or repair | *Main level interior remodel to include new kitchen, new fireplace, update existing bath, update (2) patio doors and (2) windows, new flooring and update lighting. | $89,050 | [BLD-SFD2020-00239](https://nearbypermits.com/boulder/permit/BLD-SFD2020-00239/) | | Aug 3, 2020 | Electrical | VOID- 180 Days no activity *Install 12.337kW Tesla Solar Roof System. Separate re-roof permit will be applied for - RFG2020-00526. | $64,162 | [ELE2020-01004](https://nearbypermits.com/boulder/permit/ELE2020-01004/) | | Jul 17, 2020 | Roofing | VOID- 180 Days no activity Total tear-off & reroof of SFD, 25 squares of Tile shingles on a pitch represented as 4/12. All roof materials shall be installed per manufacturer?s specs. Mid-roof inspection required if pitch is less than 4/12. All roof covering materials shall be listed as Class A as te | $13,749 | [RFG2020-00526](https://nearbypermits.com/boulder/permit/RFG2020-00526/) | | Oct 7, 2008 | Electrical | Installation of a 1.9 kW grid-tie flush mount photovoltaic system. | $2,132 | [PMT2008-04468-ELE](https://nearbypermits.com/boulder/permit/PMT2008-04468-ELE/) | | Jul 5, 2006 | Fence, wall or deck | Fence permit for 123 feet of 7'-tall cedar semi-privacy fence. | $2,175 | [PMT2006-02640-FEN](https://nearbypermits.com/boulder/permit/PMT2006-02640-FEN/) | | Apr 6, 2006 | Plumbing | One story addition to south side of house. 382 SF. New 1/2 bath. Wonderland North PUD. | $5,500 | [PMT2006-00782-PLB](https://nearbypermits.com/boulder/permit/PMT2006-00782-PLB/) | | Apr 6, 2006 | Mechanical (HVAC) | One story addition to south side of house. 382 SF. New 1/2 bath. Wonderland North PUD. | $1,200 | [PMT2006-00782-MEC](https://nearbypermits.com/boulder/permit/PMT2006-00782-MEC/) | | Apr 6, 2006 | Electrical | One story addition to south side of house. 382 SF. New 1/2 bath. Wonderland North PUD. | $3,200 | [PMT2006-00782-ELE](https://nearbypermits.com/boulder/permit/PMT2006-00782-ELE/) | | Apr 6, 2006 | Addition | One story addition to south side of house. 382 SF. New 1/2 bath. Wonderland North PUD. | $74,570 | [PMT2006-00782](https://nearbypermits.com/boulder/permit/PMT2006-00782/) | | Feb 21, 2006 | Plumbing | Remodel existing second floor. Relocate bathrooms and laundry room. No structural changes to footprint. Replace railings to top floor. Also includes gas piping and HVAC ductwork. | $5,000 | [PMT2006-00594-PLB](https://nearbypermits.com/boulder/permit/PMT2006-00594-PLB/) | | Feb 21, 2006 | Mechanical (HVAC) | Remodel existing second floor. Relocate bathrooms and laundry room. No structural changes to footprint. Replace railings to top floor. Also includes gas piping and HVAC ductwork. | $2,900 | [PMT2006-00594-MEC](https://nearbypermits.com/boulder/permit/PMT2006-00594-MEC/) | | Feb 21, 2006 | Electrical | Remodel existing second floor. Relocate bathrooms and laundry room. No structural changes to footprint. Replace railings to top floor. Also includes gas piping and HVAC ductwork. | $4,000 | [PMT2006-00594-ELE](https://nearbypermits.com/boulder/permit/PMT2006-00594-ELE/) | | Feb 21, 2006 | Alteration or repair | Remodel existing second floor. Relocate bathrooms and laundry room. No structural changes to footprint. Replace railings to top floor. Also includes gas piping and HVAC ductwork. | $50,000 | [PMT2006-00594](https://nearbypermits.com/boulder/permit/PMT2006-00594/) | | Nov 1, 2000 | Plumbing | New single-family residence (replacement of house moved from site) and fence | $8,500 | [PMT2000-02425-PLB](https://nearbypermits.com/boulder/permit/PMT2000-02425-PLB/) | | Nov 1, 2000 | Mechanical (HVAC) | New single-family residence (replacement of house moved from site) and fence | $10,882 | [PMT2000-02425-MEC](https://nearbypermits.com/boulder/permit/PMT2000-02425-MEC/) | | Nov 1, 2000 | Fence, wall or deck | New single-family residence (replacement of house moved from site) and fence | Not listed | [PMT2000-02425-FEN](https://nearbypermits.com/boulder/permit/PMT2000-02425-FEN/) | | Nov 1, 2000 | Electrical | New single-family residence (replacement of house moved from site) and fence | $21,856 | [PMT2000-02425-ELE](https://nearbypermits.com/boulder/permit/PMT2000-02425-ELE/) | | Nov 1, 2000 | New building | New single-family residence (replacement of house moved from site) and fence | $120,000 | [PMT2000-02425](https://nearbypermits.com/boulder/permit/PMT2000-02425/) | | Sep 12, 2000 | Demolition | Complete demolition of an 1100 square foot single family house. | Not listed | [PMT2000-03779-DEM](https://nearbypermits.com/boulder/permit/PMT2000-03779-DEM/) | | Aug 14, 2000 | Electrical | Temporary Construction Power. | $400 | [PMT2000-03340-ELE](https://nearbypermits.com/boulder/permit/PMT2000-03340-ELE/) | | Jul 10, 1997 | Alteration or repair | After the fact permit to move wh & furnace & demo the original general permit | $3,000 | [PMT1997-04084](https://nearbypermits.com/boulder/permit/PMT1997-04084/) | ## More on this street Other addresses on Union Ave with permits, nearest house number first: - [792 Union Ave](https://nearbypermits.com/boulder/address/792-union-ave/): newest permit Nov 19, 2024 - [800 Union Ave](https://nearbypermits.com/boulder/address/800-union-ave/): newest permit Feb 3, 2025 - [725 Union Ave](https://nearbypermits.com/boulder/address/725-union-ave/): newest permit Dec 19, 2025 - [830 Union Ave](https://nearbypermits.com/boulder/address/830-union-ave/): newest permit Oct 2, 2026 - [840 Union Ave](https://nearbypermits.com/boulder/address/840-union-ave/): newest permit Mar 3, 2026 - [855 Union Ave](https://nearbypermits.com/boulder/address/855-union-ave/): newest permit May 7, 2026 - [860 Union Ave](https://nearbypermits.com/boulder/address/860-union-ave/): newest permit Sep 21, 2026 - [862 Union Ave](https://nearbypermits.com/boulder/address/862-union-ave/): newest permit Jul 9, 2026 - [865 Union Ave](https://nearbypermits.com/boulder/address/865-union-ave/): newest permit Aug 14, 2026 - [890 Union Ave](https://nearbypermits.com/boulder/address/890-union-ave/): newest permit Mar 18, 2026 --- Source: Boulder Planning and Development Services permit data (https://www.arcgis.com/home/item.html?id=e3ff6248e4a547bcba31025d2c5c9fee). Checked 2026-10-07 00:10 UTC. Nearby Permits, https://nearbypermits.com. JSON API and MCP server: https://nearbypermits.com/developers/ All 31 permits at this address: https://nearbypermits.com/boulder/address/770-union-ave/