# Building permits at 3057 4th St, Boulder, CO 16 permits on record here. The newest, Dec 16, 2025: Mitsubishi Electric Heat Pump System System Size: 25K BTUs System Components: (2) Mitsubishi HiWall. 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 | |---|---|---|---|---| | Dec 16, 2025 | Mechanical (HVAC) | Mitsubishi Electric Heat Pump System System Size: 25K BTUs System Components: (2) Mitsubishi HiWall - MSZ-GX12NL (1) Mitsubishi Outdoor Unit - MXZ- 3D24NLHZ Permit Included Electrical Upgrades: Branch Circuit Connection PLEASE NOTE: APPLICABLE ONLY TO SYSTEMS WITH FUEL BURNING APPLIANCES: All new pl | $16,507 | [MEC2025-02246](https://nearbypermits.com/boulder/permit/MEC2025-02246/) | | Dec 3, 2024 | Mechanical (HVAC) | Voided for inactivity - no inspection within 180 days. replace failed 50 gallon gas water heater with similar model | $3,895 | [MEC2024-01801](https://nearbypermits.com/boulder/permit/MEC2024-01801/) | | Oct 10, 2023 | Mechanical (HVAC) | *Voided for inactivity - no inspections within 180 days* Replacement of new furnace 2 stage 96% | $8,662 | [MEC2023-01490](https://nearbypermits.com/boulder/permit/MEC2023-01490/) | | Nov 29, 2017 | Plumbing | Foundation stabilization and two-story addition to existing single family residence. Scope includes 148 sf covered front porch, reconfiguration of laundry room. Addition includes new master bedroom and 3/4 bath, approx. 531 sf of remodel and addition. Includes associated MEP. Mid-roof inspection req | $30,000 | [PMT2017-03716-PLB](https://nearbypermits.com/boulder/permit/PMT2017-03716-PLB/) | | Nov 29, 2017 | Mechanical (HVAC) | Foundation stabilization and two-story addition to existing single family residence. Scope includes 148 sf covered front porch, reconfiguration of laundry room. Addition includes new master bedroom and 3/4 bath, approx. 531 sf of remodel and addition. Includes associated MEP. Mid-roof inspection req | $20,000 | [PMT2017-03716-MEC](https://nearbypermits.com/boulder/permit/PMT2017-03716-MEC/) | | Nov 29, 2017 | Electrical | Foundation stabilization and two-story addition to existing single family residence. Scope includes 148 sf covered front porch, reconfiguration of laundry room. Addition includes new master bedroom and 3/4 bath, approx. 531 sf of remodel and addition. Includes associated MEP. Mid-roof inspection req | $20,000 | [PMT2017-03716-ELE](https://nearbypermits.com/boulder/permit/PMT2017-03716-ELE/) | | Nov 29, 2017 | Addition | Foundation stabilization and two-story addition to existing single family residence. Scope includes 148 sf covered front porch, reconfiguration of laundry room. Addition includes new master bedroom and 3/4 bath, approx. 531 sf of remodel and addition. Includes associated MEP. Mid-roof inspection req | $150,000 | [PMT2017-03716](https://nearbypermits.com/boulder/permit/PMT2017-03716/) | | Apr 6, 2017 | Plumbing | Removal of kitchen to include removal of oven/stove, refrigerator, and sink on the lower level of the accessory structure and removal of shower on the upper level of the accessory structure. Removal of the oven/stove on the main level to include the removal of the 220 volt receptacle and the breaker | $210 | [PMT2017-01176-PLB](https://nearbypermits.com/boulder/permit/PMT2017-01176-PLB/) | | Apr 6, 2017 | Electrical | Removal of kitchen to include removal of oven/stove, refrigerator, and sink on the lower level of the accessory structure and removal of shower on the upper level of the accessory structure. Removal of the oven/stove on the main level to include the removal of the 220 volt receptacle and the breaker | $125 | [PMT2017-01176-ELE](https://nearbypermits.com/boulder/permit/PMT2017-01176-ELE/) | | May 15, 2012 | Fence, wall or deck | Installation of a seven foot high cedar privacy fence along southern property line | $3,000 | [PMT2012-02345-FEN](https://nearbypermits.com/boulder/permit/PMT2012-02345-FEN/) | | Apr 27, 2007 | Electrical | Install flush mounted photovoltaic system. (Valuation does not include the cost of the panels, which were provided by Simple Solar.) (This company pays the tax associated with the panels directly to the City & County (?) Tax Departments.) | Not listed | [PMT2007-01593-ELE](https://nearbypermits.com/boulder/permit/PMT2007-01593-ELE/) | | Apr 27, 2007 | Solar | Install flush mounted photovoltaic system. (Valuation does not include the cost of the panels, which were provided by Simple Solar.) (This company pays the tax associated with the panels directly to the City & County (?) Tax Departments.) | $2,669 | [PMT2007-01593](https://nearbypermits.com/boulder/permit/PMT2007-01593/) | | Mar 18, 2004 | Fence, wall or deck | Replace cedar privacy fence in rear and side yards of single-family residence. Fence to be 7-feet in height, 125 feet in length. | $2,250 | [PMT2004-00962-FEN](https://nearbypermits.com/boulder/permit/PMT2004-00962-FEN/) | | Jun 20, 2003 | Electrical | Addition of a second story to an existing garage and conversion of garage to personal office space (under 500 s.f. - not for commercial use). | $200 | [PMT2003-01936-ELE](https://nearbypermits.com/boulder/permit/PMT2003-01936-ELE/) | | Jun 20, 2003 | Addition | Addition of a second story to an existing garage and conversion of garage to personal office space (under 500 s.f. - not for commercial use). | $3,000 | [PMT2003-01936](https://nearbypermits.com/boulder/permit/PMT2003-01936/) | | May 14, 1990 | Roofing | Roofing reroof with fiberglass | $800 | [PMT1990-R0228-RFG](https://nearbypermits.com/boulder/permit/PMT1990-R0228-RFG/) | --- Source: Boulder Planning and Development Services permit data (https://www.arcgis.com/home/item.html?id=e3ff6248e4a547bcba31025d2c5c9fee). Checked 2026-10-06 11:20 UTC. Nearby Permits, https://nearbypermits.com. JSON API and MCP server: https://nearbypermits.com/developers/ All 16 permits at this address: https://nearbypermits.com/boulder/address/3057-4th-st/