# Building permits at 3355 4th St, Boulder, CO 17 permits on record here. The newest, Jul 9: Installation of 50amp manual transfer switch with 50amp rated receptacle for portable generator. 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 9, 2026 | Electrical | Installation of 50amp manual transfer switch with 50amp rated receptacle for portable generator. | $2,500 | [ELE2026-00645](https://nearbypermits.com/boulder/permit/ELE2026-00645/) | | Dec 23, 2025 | Fence, wall or deck | Replace existing timber retaining wall with a concrete retaining wall. Approximately 56' in length, height varies between 2-7'. | $50,000 | [FEN2025-00026](https://nearbypermits.com/boulder/permit/FEN2025-00026/) | | Aug 21, 2025 | Mechanical (HVAC) | *Voided for inactivity. No inspections requested within 180 days.* install replacement 96% 70k btu furnace, 96% 90k btu furnace and 14 SEER 2.5 ton ac w/reconnect All new plastic glued vents for fuel burning appliances must undergo pressure testing. To facilitate the inspection process, please provi | $23,155 | [MEC2025-01366](https://nearbypermits.com/boulder/permit/MEC2025-01366/) | | Jul 29, 2022 | Mechanical (HVAC) | *Voided for inactivity - no inspections within 180 days* Replacing ac with 4 ton 13 seer unit with basic electrical connections | $24,611 | [MEC2022-01428](https://nearbypermits.com/boulder/permit/MEC2022-01428/) | | Dec 22, 2016 | Mechanical (HVAC) | Replacement Water Heater | $7,709 | [PMT2016-20433-MEC](https://nearbypermits.com/boulder/permit/PMT2016-20433-MEC/) | | Jun 24, 2014 | Electrical | New PV array system. 3.5 kw | $15,075 | [PMT2014-02989-ELE](https://nearbypermits.com/boulder/permit/PMT2014-02989-ELE/) | | Apr 23, 2014 | Fence, wall or deck | Installation of 7 foot privacy fence along south and north property lines of rear yard with wing fences returning to the SFDD. Additionally ther will be a seven foot 3-rail fence with welded wire along the rear property line (west). | $15,000 | [PMT2014-01783-FEN](https://nearbypermits.com/boulder/permit/PMT2014-01783-FEN/) | | Feb 19, 2013 | Plumbing | Interior remodel of single-family residence. | $1,500 | [PMT2013-00471-PLB](https://nearbypermits.com/boulder/permit/PMT2013-00471-PLB/) | | Feb 19, 2013 | Mechanical (HVAC) | Interior remodel of single-family residence. | $1,000 | [PMT2013-00471-MEC](https://nearbypermits.com/boulder/permit/PMT2013-00471-MEC/) | | Feb 19, 2013 | Electrical | Interior remodel of single-family residence. | $3,000 | [PMT2013-00471-ELE](https://nearbypermits.com/boulder/permit/PMT2013-00471-ELE/) | | Feb 19, 2013 | Alteration or repair | Interior remodel of single-family residence. | $85,000 | [PMT2013-00471](https://nearbypermits.com/boulder/permit/PMT2013-00471/) | | Oct 10, 2007 | Fence, wall or deck | Installation of 35 linear feet of 7' privacy fence at south property line -- remaining fence to be 203 linear feet of 4' three rail split rail. | $2,850 | [PMT2007-04460-FEN](https://nearbypermits.com/boulder/permit/PMT2007-04460-FEN/) | | Jan 28, 2003 | Plumbing | Construction of a new single-family detached residence with six bedrooms, 5.5 bathrooms and an attached two-car garage. | $25,000 | [PMT2002-05246-PLB](https://nearbypermits.com/boulder/permit/PMT2002-05246-PLB/) | | Jan 28, 2003 | Mechanical (HVAC) | Construction of a new single-family detached residence with six bedrooms, 5.5 bathrooms and an attached two-car garage. | $20,000 | [PMT2002-05246-MEC](https://nearbypermits.com/boulder/permit/PMT2002-05246-MEC/) | | Jan 28, 2003 | Electrical | Construction of a new single-family detached residence with six bedrooms, 5.5 bathrooms and an attached two-car garage. | $20,000 | [PMT2002-05246-ELE](https://nearbypermits.com/boulder/permit/PMT2002-05246-ELE/) | | Jan 28, 2003 | New building | Construction of a new single-family detached residence with six bedrooms, 5.5 bathrooms and an attached two-car garage. | $400,000 | [PMT2002-05246](https://nearbypermits.com/boulder/permit/PMT2002-05246/) | | Dec 10, 2002 | Demolition | Total structure demolition of an existing single-family residence (900 s.f.). | Not listed | [PMT2002-05244-DEM](https://nearbypermits.com/boulder/permit/PMT2002-05244-DEM/) | ## More on this street Other addresses on 4th St with permits, nearest house number first: - [3369 4th St](https://nearbypermits.com/boulder/address/3369-4th-st/): newest permit Dec 11, 2025 - [3380 4th St](https://nearbypermits.com/boulder/address/3380-4th-st/): newest permit Apr 3, 2026 - [3390 4th St](https://nearbypermits.com/boulder/address/3390-4th-st/): newest permit Apr 6, 2026 - [3311 4th St](https://nearbypermits.com/boulder/address/3311-4th-st/): newest permit Nov 17, 2025 - [3309 4th St](https://nearbypermits.com/boulder/address/3309-4th-st/): newest permit May 22, 2025 - [3307 4th St](https://nearbypermits.com/boulder/address/3307-4th-st/): newest permit Apr 13, 2026 - [3302 4th St](https://nearbypermits.com/boulder/address/3302-4th-st/): newest permit Jul 3, 2025 - [3421 4th St](https://nearbypermits.com/boulder/address/3421-4th-st/): newest permit Jan 23, 2026 - [3239 4th St](https://nearbypermits.com/boulder/address/3239-4th-st/): newest permit Oct 21, 2024 - [3232 4th St](https://nearbypermits.com/boulder/address/3232-4th-st/): newest permit Dec 12, 2024 --- Source: Boulder Planning and Development Services permit data (https://www.arcgis.com/home/item.html?id=e3ff6248e4a547bcba31025d2c5c9fee). Checked 2026-10-07 02:01 UTC. Nearby Permits, https://nearbypermits.com. JSON API and MCP server: https://nearbypermits.com/developers/ All 17 permits at this address: https://nearbypermits.com/boulder/address/3355-4th-st/