# Building permits at 840 Union Ave, Boulder, CO 19 permits on record here. The newest, Mar 3: Replace 50 gallon water heater like for like PLEASE NOTE: APPLICABLE ONLY TO SYSTEMS WITH FUEL BURNING. 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 | |---|---|---|---|---| | Mar 3, 2026 | Mechanical (HVAC) | replace 50 gallon water heater like for like PLEASE NOTE: APPLICABLE ONLY TO SYSTEMS WITH FUEL BURNING APPLIANCES: All new plastic glued vents for fuel burning appliances must undergo pressure testing. To facilitate the inspection process, please provide photographic evidence of the pressure test di | $5,835 | [MEC2026-00318](https://nearbypermits.com/boulder/permit/MEC2026-00318/) | | Jan 24, 2025 | Mechanical (HVAC) | Voided for inactivity - no inspection within 180 days. Replace furnace - new 60K BTU 96% furnace | $6,346 | [MEC2025-00143](https://nearbypermits.com/boulder/permit/MEC2025-00143/) | | Jan 13, 2020 | Alteration or repair | Interior, non-structural kitchen remodel to include new electrical wiring and lighting, adding a water line for a pot filler and relocating the gas stove/range hood. Replacing the front door and adding insulation (to reduce sound transmission) around the downstairs half-bath. New cabinets and finish | $18,186 | [BLD-SFD2020-00013](https://nearbypermits.com/boulder/permit/BLD-SFD2020-00013/) | | Jan 10, 2020 | Plumbing | Interior, non-structural kitchen remodel to include new electrical wiring and lighting, adding a water line for a pot filler and relocating the gas stove/range hood. Replacing the front door and adding insulation (to reduce sound transmission) around the downstairs half-bath. New cabinets and finish | $3,000 | [PLB2020-00019](https://nearbypermits.com/boulder/permit/PLB2020-00019/) | | Jan 10, 2020 | Mechanical (HVAC) | Interior, non-structural kitchen remodel to include new electrical wiring and lighting, adding a water line for a pot filler and relocating the gas stove/range hood. Replacing the front door and adding insulation (to reduce sound transmission) around the downstairs half-bath. New cabinets and finish | $2,000 | [MEC2020-00056](https://nearbypermits.com/boulder/permit/MEC2020-00056/) | | Jan 10, 2020 | Electrical | Interior, non-structural kitchen remodel to include new electrical wiring and lighting, adding a water line for a pot filler and relocating the gas stove/range hood. Replacing the front door and adding insulation (to reduce sound transmission) around the downstairs half-bath. New cabinets and finish | $600 | [ELE2020-00035](https://nearbypermits.com/boulder/permit/ELE2020-00035/) | | Jun 8, 2015 | Fence, wall or deck | New fence - 35 LF of five-foot tall cedar fence, and 24 LF of six-foot tall cedar fence. | $1,400 | [PMT2015-02242-FEN](https://nearbypermits.com/boulder/permit/PMT2015-02242-FEN/) | | Nov 7, 2013 | Electrical | Installation of 5.8 kw, flush-mounted, grid-tied, rooftop, photovoltaic solar energy system. | $10,000 | [PMT2013-06262-ELE](https://nearbypermits.com/boulder/permit/PMT2013-06262-ELE/) | | Apr 11, 2013 | Electrical | Installation of 6.86 kw, flush mounted, grid tied, rooftop, photovoltaic solar energy system on a single-family residence. | $24,000 | [PMT2013-01530-ELE](https://nearbypermits.com/boulder/permit/PMT2013-01530-ELE/) | | Apr 1, 2013 | Electrical | Electrical permit for 2,200SF of new wiring, new 200 amp panel, new outlets, fixtures, and switches. | $10,000 | [PMT2013-01371-ELE](https://nearbypermits.com/boulder/permit/PMT2013-01371-ELE/) | | Jan 31, 2013 | Plumbing | Addition and remodel to an existing SFD -- (demolition of 301 sf in order to perform a subdivision) Remodel of 1099 sf and addition of 583 sf (conditioned), add 489 sf carport and a 120 sf front porch. Replacement forced air furnace and water heater -- install gas fireplace and associated gas piping | $14,000 | [PMT2012-04978-PLB](https://nearbypermits.com/boulder/permit/PMT2012-04978-PLB/) | | Jan 31, 2013 | Mechanical (HVAC) | Addition and remodel to an existing SFD -- (demolition of 301 sf in order to perform a subdivision) Remodel of 1099 sf and addition of 583 sf (conditioned), add 489 sf carport and a 120 sf front porch. Replacement forced air furnace and water heater -- install gas fireplace and associated gas piping | $10,000 | [PMT2012-04978-MEC](https://nearbypermits.com/boulder/permit/PMT2012-04978-MEC/) | | Jan 31, 2013 | Electrical | Addition and remodel to an existing SFD -- (demolition of 301 sf in order to perform a subdivision) Remodel of 1099 sf and addition of 583 sf (conditioned), add 489 sf carport and a 120 sf front porch. Replacement forced air furnace and water heater -- install gas fireplace and associated gas piping | $10,000 | [PMT2012-04978-ELE](https://nearbypermits.com/boulder/permit/PMT2012-04978-ELE/) | | Jan 31, 2013 | Addition | Addition and remodel to an existing SFD -- (demolition of 301 sf in order to perform a subdivision) Remodel of 1099 sf and addition of 583 sf (conditioned), add 489 sf carport and a 120 sf front porch. Replacement forced air furnace and water heater -- install gas fireplace and associated gas piping | $327,868 | [PMT2012-04978](https://nearbypermits.com/boulder/permit/PMT2012-04978/) | | Aug 17, 2012 | Electrical | Demolition of garage and rear porch on existing house in anticipation of minor subdivision approval through LUR2011-00078. Exterior wall to be reconstructed in location of former separation between the house and the garage. New electrical panel to be relocated on the new exterior wall. | Not listed | [PMT2012-03484-ELE](https://nearbypermits.com/boulder/permit/PMT2012-03484-ELE/) | | Aug 17, 2012 | Demolition | Demolition of garage and rear porch on existing house in anticipation of minor subdivision approval through LUR2011-00078. Exterior wall to be reconstructed in location of former separation between the house and the garage. New electrical panel to be relocated on the new exterior wall. | $5,146 | [PMT2012-03484](https://nearbypermits.com/boulder/permit/PMT2012-03484/) | | Jan 20, 2012 | Roofing | Remove existing shingles and re-roof single-family residence with dimensional shingles. 16.8 squares, roof pitch represented by contractor to be 4:12. | $3,500 | [PMT2012-00258-RFG](https://nearbypermits.com/boulder/permit/PMT2012-00258-RFG/) | | Apr 12, 2001 | Mechanical (HVAC) | Replacing a forced air furnace, and a comfort cooling system, and electrical work. | $3,100 | [PMT2001-01364-MEC](https://nearbypermits.com/boulder/permit/PMT2001-01364-MEC/) | | Apr 12, 2001 | Electrical | Replacing a forced air furnace, and a comfort cooling system, and electrical work. | $250 | [PMT2001-01364-ELE](https://nearbypermits.com/boulder/permit/PMT2001-01364-ELE/) | ## More on this street Other addresses on Union Ave with permits, nearest house number first: - [830 Union Ave](https://nearbypermits.com/boulder/address/830-union-ave/): newest permit Oct 2, 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 - [800 Union Ave](https://nearbypermits.com/boulder/address/800-union-ave/): newest permit Feb 3, 2025 - [792 Union Ave](https://nearbypermits.com/boulder/address/792-union-ave/): newest permit Nov 19, 2024 - [890 Union Ave](https://nearbypermits.com/boulder/address/890-union-ave/): newest permit Mar 18, 2026 - [906 Union Ave](https://nearbypermits.com/boulder/address/906-union-ave/): newest permit Jul 22, 2025 - [770 Union Ave](https://nearbypermits.com/boulder/address/770-union-ave/): newest permit May 1, 2025 --- Source: Boulder Planning and Development Services permit data (https://www.arcgis.com/home/item.html?id=e3ff6248e4a547bcba31025d2c5c9fee). Checked 2026-10-07 07:16 UTC. Nearby Permits, https://nearbypermits.com. JSON API and MCP server: https://nearbypermits.com/developers/ All 19 permits at this address: https://nearbypermits.com/boulder/address/840-union-ave/