# Building permits at 510 Maxwell Ave, Boulder, CO 10 permits on record here. The newest, Jun 9: Installing ducted heat pump mini split system: 1-Mitsubishi MXZ-SM48NLHZ for PAA intelli-HEAT Heat Pump. 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 | |---|---|---|---|---| | Jun 9, 2026 | Mechanical (HVAC) | Installing ducted heat pump mini split system: 1-Mitsubishi MXZ-SM48NLHZ for PAA intelli-HEAT Heat Pump 1-Mitsubishi PAA-AA24NL intelli-HEAT Cased Coil 1-Mitsubishi SVZ-AP36NL indoor ducted wall mounted unit 1-Heat pump 240V circuit *HIS2026-00134 PLEASE NOTE: APPLICABLE ONLY TO SYSTEMS WITH FUEL BU | $26,877 | [MEC2026-00687](https://nearbypermits.com/boulder/permit/MEC2026-00687/) | | Mar 20, 2019 | Mechanical (HVAC) | *Replace existing furnace with a new 96% AFUE, 60,000 btu/hr furnace | $3,550 | [MEC2019-00367](https://nearbypermits.com/boulder/permit/MEC2019-00367/) | | Nov 7, 2005 | Plumbing | Two story addition to single family residence with finished basement. Addtion to total 1,787 s.f. containing new master bedroom, 2 full baths, replacement kitchen, family room, basement rec. room. See adr2005-00136 | $15,000 | [PMT2005-03876-PLB](https://nearbypermits.com/boulder/permit/PMT2005-03876-PLB/) | | Nov 7, 2005 | Mechanical (HVAC) | Two story addition to single family residence with finished basement. Addtion to total 1,787 s.f. containing new master bedroom, 2 full baths, replacement kitchen, family room, basement rec. room. See adr2005-00136 | $10,000 | [PMT2005-03876-MEC](https://nearbypermits.com/boulder/permit/PMT2005-03876-MEC/) | | Nov 7, 2005 | Electrical | Two story addition to single family residence with finished basement. Addtion to total 1,787 s.f. containing new master bedroom, 2 full baths, replacement kitchen, family room, basement rec. room. See adr2005-00136 | $9,200 | [PMT2005-03876-ELE](https://nearbypermits.com/boulder/permit/PMT2005-03876-ELE/) | | Nov 7, 2005 | Addition | Two story addition to single family residence with finished basement. Addtion to total 1,787 s.f. containing new master bedroom, 2 full baths, replacement kitchen, family room, basement rec. room. See adr2005-00136 | $199,143 | [PMT2005-03876](https://nearbypermits.com/boulder/permit/PMT2005-03876/) | | Apr 10, 2000 | Alteration or repair | Replace two windows, replace siding on west and north side. | $8,000 | [PMT2000-01414](https://nearbypermits.com/boulder/permit/PMT2000-01414/) | | Aug 19, 1997 | Roofing | Re-roof part of roof the original general permit number is 975035. | $3,424 | [PMT1997-05035](https://nearbypermits.com/boulder/permit/PMT1997-05035/) | | Aug 14, 1996 | Alteration or repair | New detached 2 car garage the original general permit number is 965166. | $35,000 | [PMT1996-05166](https://nearbypermits.com/boulder/permit/PMT1996-05166/) | | May 6, 1991 | Alteration or repair | Repair siding, replace porch pillars the original general permit number is 829 | $1,000 | [PMT1991-08294](https://nearbypermits.com/boulder/permit/PMT1991-08294/) | ## 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 Maxwell Ave with permits, nearest house number first: - [516 Maxwell Ave](https://nearbypermits.com/boulder/address/516-maxwell-ave/): newest permit Jun 11, 2026 - [527 Maxwell Ave](https://nearbypermits.com/boulder/address/527-maxwell-ave/): newest permit Apr 11, 2025 - [536 Maxwell Ave](https://nearbypermits.com/boulder/address/536-maxwell-ave/): newest permit Apr 17, 2025 - [541 Maxwell Ave](https://nearbypermits.com/boulder/address/541-maxwell-ave/): newest permit Apr 11, 2025 - [457 Maxwell Ave 2](https://nearbypermits.com/boulder/address/457-maxwell-ave-2/): newest permit Dec 9, 2025 - [435 Maxwell Ave](https://nearbypermits.com/boulder/address/435-maxwell-ave/): newest permit Apr 23, 2025 - [430 Maxwell Ave](https://nearbypermits.com/boulder/address/430-maxwell-ave/): newest permit Apr 11, 2025 - [429 Maxwell Ave](https://nearbypermits.com/boulder/address/429-maxwell-ave/): newest permit May 13, 2026 - [415 Maxwell Ave](https://nearbypermits.com/boulder/address/415-maxwell-ave/): newest permit May 12, 2026 - [611 Maxwell Ave](https://nearbypermits.com/boulder/address/611-maxwell-ave/): newest permit Feb 18, 2026 --- Source: Boulder Planning and Development Services permit data (https://www.arcgis.com/home/item.html?id=e3ff6248e4a547bcba31025d2c5c9fee). Checked 2026-10-09 04:03 UTC. Nearby Permits, https://nearbypermits.com. JSON API and MCP server: https://nearbypermits.com/developers/ All 10 permits at this address: https://nearbypermits.com/boulder/address/510-maxwell-ave/