# Building permits at 701 31st St, Boulder, CO 15 permits on record here. The newest, Jul 21: Like for like, 50 Gallon Atmospheric Natural Gas Water Heater PLEASE NOTE: APPLICABLE ONLY TO SYSTEMS WITH. 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 21, 2026 | Mechanical (HVAC) | like for like, 50 Gallon Atmospheric Natural Gas Water Heater 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 | $3,500 | [MEC2026-01238](https://nearbypermits.com/boulder/permit/MEC2026-01238/) | | Nov 1, 2022 | Mechanical (HVAC) | Furnace and A/C Replacement with a 80% 80K BTU Furnace and a 18 SEER 2 Ton A/C | $17,111 | [MEC2022-01928](https://nearbypermits.com/boulder/permit/MEC2022-01928/) | | Nov 1, 2022 | Electrical | *Voided for inactivity - no inspections within 180 days* Disconnect and Reconnect of an A/C Installation | $500 | [ELE2022-01454](https://nearbypermits.com/boulder/permit/ELE2022-01454/) | | Oct 25, 2019 | Mechanical (HVAC) | Installation of a gas-fired replacement water heater, 50 gal, to meet 2017 COBECC energy code requirements. Install thermal expansion device, service outlet and carbon monoxide detector(s) per code. Thermal expansion tanks required on new and replaced storage-type hot water heaters per 2012 IRC sect | $1,800 | [MEC2019-01794](https://nearbypermits.com/boulder/permit/MEC2019-01794/) | | Mar 24, 2017 | Fence, wall or deck | Install 7' tall cedar privacy fence on the south property line. | $1,400 | [PMT2017-01149-FEN](https://nearbypermits.com/boulder/permit/PMT2017-01149-FEN/) | | Sep 16, 2014 | Fence, wall or deck | A 7 foot high wood fence to replace an existing fence. The length of the fence is 24 feet. | $750 | [PMT2014-04289-FEN](https://nearbypermits.com/boulder/permit/PMT2014-04289-FEN/) | | Oct 24, 2013 | Electrical | Electrical permit to install GFI outlet in crawlspace. | $100 | [PMT2013-05861-ELE](https://nearbypermits.com/boulder/permit/PMT2013-05861-ELE/) | | Jun 18, 2013 | Electrical | Install new receptacle in the crawlspace for sprinkler system control. | $100 | [PMT2013-02819-ELE](https://nearbypermits.com/boulder/permit/PMT2013-02819-ELE/) | | Jun 12, 2013 | Plumbing | Installation of a BFPD (vacuum breaker) on the north side of the house for an anticipated sprinkler system. | $350 | [PMT2013-02687-PLB](https://nearbypermits.com/boulder/permit/PMT2013-02687-PLB/) | | Sep 5, 2012 | Electrical | Electrical permit for A/C hookup. Mechanical work done through PMT2012-04182. | $500 | [PMT2012-04344-ELE](https://nearbypermits.com/boulder/permit/PMT2012-04344-ELE/) | | Aug 27, 2012 | Mechanical (HVAC) | Mechanical permit only for new comfort cooling install. Electrical work on separate permit. | $1,930 | [PMT2012-04182-MEC](https://nearbypermits.com/boulder/permit/PMT2012-04182-MEC/) | | Oct 11, 2010 | Roofing | Tear-off & reroof of a SFD, 19 squares on a "flat roof" -- Versico FA 60-mil TPO. Mid-roof inspection required. Positive drainage required -- over the edge, interior drains or scuppers or a combination thereof. | $12,980 | [PMT2010-04447-RFG](https://nearbypermits.com/boulder/permit/PMT2010-04447-RFG/) | | Apr 27, 2005 | Mechanical (HVAC) | Replacement Forced Air Furnace | $1,200 | [PMT2005-20089-MEC](https://nearbypermits.com/boulder/permit/PMT2005-20089-MEC/) | | Apr 26, 2005 | Mechanical (HVAC) | Replacement Water Heater | $300 | [PMT2005-20086-MEC](https://nearbypermits.com/boulder/permit/PMT2005-20086-MEC/) | | Jul 26, 2004 | Electrical | electrical permit for a service change only - 150 amps | $1,000 | [PMT2004-02879-ELE](https://nearbypermits.com/boulder/permit/PMT2004-02879-ELE/) | ## More on this street Other addresses on 31st St with permits, nearest house number first: - [765 31st St](https://nearbypermits.com/boulder/address/765-31st-st/): newest permit Oct 24, 2024 - [780 31st St](https://nearbypermits.com/boulder/address/780-31st-st/): newest permit Dec 1, 2025 - [330 31st St](https://nearbypermits.com/boulder/address/330-31st-st/): newest permit Oct 8, 2025 - [320 31st St](https://nearbypermits.com/boulder/address/320-31st-st/): newest permit Nov 6, 2024 - [270 31st St](https://nearbypermits.com/boulder/address/270-31st-st/): newest permit Jun 11, 2026 - [260 31st St](https://nearbypermits.com/boulder/address/260-31st-st/): newest permit Jul 21, 2025 - [235 31st St](https://nearbypermits.com/boulder/address/235-31st-st/): newest permit Mar 9, 2026 - [225 31st St](https://nearbypermits.com/boulder/address/225-31st-st/): newest permit Aug 28, 2026 - [137 31st St](https://nearbypermits.com/boulder/address/137-31st-st/): newest permit Jul 29, 2025 - [2255 31st St](https://nearbypermits.com/boulder/address/2255-31st-st/): newest permit Jul 31, 2026 --- Source: Boulder Planning and Development Services permit data (https://www.arcgis.com/home/item.html?id=e3ff6248e4a547bcba31025d2c5c9fee). Checked 2026-10-07 02:29 UTC. Nearby Permits, https://nearbypermits.com. JSON API and MCP server: https://nearbypermits.com/developers/ All 15 permits at this address: https://nearbypermits.com/boulder/address/701-31st-st/