# Building permits at 3255 6th St, Boulder, CO 16 permits on record here. The newest, May 18: Add Mini Split - Single PLEASE NOTE: APPLICABLE ONLY TO SYSTEMS WITH FUEL BURNING APPLIANCES: All new plastic. 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 | |---|---|---|---|---| | May 18, 2026 | Mechanical (HVAC) | Add Mini Split - Single 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 directly to the assigne | $4,050 | [MEC2026-00799](https://nearbypermits.com/boulder/permit/MEC2026-00799/) | | Oct 8, 2025 | Electrical | roof mounted solar installation 5.67KW 14 x solar space ss8-54hsb 405W solar modules 14 x enphase 1q8plus-72-2-us microinverters | $16,363 | [ELE2025-01074](https://nearbypermits.com/boulder/permit/ELE2025-01074/) | | Jul 5, 2022 | Plumbing | Proposed main level addition and remodel with addition of (1) sliding door to balcony on existing upper level of an exising 2- story single family residential house. | $18,000 | [PLB2022-00060](https://nearbypermits.com/boulder/permit/PLB2022-00060/) | | Jul 5, 2022 | Mechanical (HVAC) | Proposed main level addition and remodel with addition of (1) sliding door to balcony on existing upper level of an exising 2- story single family residential house. | $6,000 | [MEC2022-00157](https://nearbypermits.com/boulder/permit/MEC2022-00157/) | | Jul 5, 2022 | Electrical | Proposed main level addition and remodel with addition of (1) sliding door to balcony on existing upper level of an exising 2- story single family residential house. | $15,000 | [ELE2022-00129](https://nearbypermits.com/boulder/permit/ELE2022-00129/) | | Jul 5, 2022 | Addition | Proposed main level addition and remodel with addition of (1) sliding door to balcony on existing upper level of an exising 2- story single family residential house. | $150,400 | [BLD-SFD2022-00050](https://nearbypermits.com/boulder/permit/BLD-SFD2022-00050/) | | Nov 29, 2017 | Mechanical (HVAC) | Replacement Low Pressure Boiler | $12,000 | [PMT2017-20553-MEC](https://nearbypermits.com/boulder/permit/PMT2017-20553-MEC/) | | Aug 15, 2017 | Plumbing | New accessory structure, 556 sq.ft, to be located on the western property line adjacent to the alley. Structure to include 306 sq.ft. unconditioned workshop on main level and 250 sq.ft. conditioned stair/office space on upper level. Associated MEP's covered within the scope of this permit. | $2,445 | [PMT2017-00914-PLB](https://nearbypermits.com/boulder/permit/PMT2017-00914-PLB/) | | Aug 15, 2017 | Mechanical (HVAC) | New accessory structure, 556 sq.ft, to be located on the western property line adjacent to the alley. Structure to include 306 sq.ft. unconditioned workshop on main level and 250 sq.ft. conditioned stair/office space on upper level. Associated MEP's covered within the scope of this permit. | $420 | [PMT2017-00914-MEC](https://nearbypermits.com/boulder/permit/PMT2017-00914-MEC/) | | Aug 15, 2017 | Electrical | New accessory structure, 556 sq.ft, to be located on the western property line adjacent to the alley. Structure to include 306 sq.ft. unconditioned workshop on main level and 250 sq.ft. conditioned stair/office space on upper level. Associated MEP's covered within the scope of this permit. | $5,857 | [PMT2017-00914-ELE](https://nearbypermits.com/boulder/permit/PMT2017-00914-ELE/) | | Aug 15, 2017 | New building | New accessory structure, 556 sq.ft, to be located on the western property line adjacent to the alley. Structure to include 306 sq.ft. unconditioned workshop on main level and 250 sq.ft. conditioned stair/office space on upper level. Associated MEP's covered within the scope of this permit. | $155,000 | [PMT2017-00914](https://nearbypermits.com/boulder/permit/PMT2017-00914/) | | Jun 3, 2016 | Alteration or repair | Owner/contractor installation of 7' x 7' sliding door in existing window location on west elevation of main floor in a single family detached dwelling. | $1,800 | [PMT2016-02572](https://nearbypermits.com/boulder/permit/PMT2016-02572/) | | Aug 24, 2001 | Plumbing | New family room and porch addition to front of structur. Second story addition (2 bedrooms, 1 bathroom) and remodel to single family detached residence. Remove existing attached carport. Parking space relocated to rear yard with alley access. | $175 | [PMT2001-02530-PLB](https://nearbypermits.com/boulder/permit/PMT2001-02530-PLB/) | | Aug 24, 2001 | Mechanical (HVAC) | New family room and porch addition to front of structur. Second story addition (2 bedrooms, 1 bathroom) and remodel to single family detached residence. Remove existing attached carport. Parking space relocated to rear yard with alley access. | $100 | [PMT2001-02530-MEC](https://nearbypermits.com/boulder/permit/PMT2001-02530-MEC/) | | Aug 24, 2001 | Electrical | New family room and porch addition to front of structur. Second story addition (2 bedrooms, 1 bathroom) and remodel to single family detached residence. Remove existing attached carport. Parking space relocated to rear yard with alley access. | $1,160 | [PMT2001-02530-ELE](https://nearbypermits.com/boulder/permit/PMT2001-02530-ELE/) | | Aug 24, 2001 | Addition | New family room and porch addition to front of structur. Second story addition (2 bedrooms, 1 bathroom) and remodel to single family detached residence. Remove existing attached carport. Parking space relocated to rear yard with alley access. | $130,000 | [PMT2001-02530](https://nearbypermits.com/boulder/permit/PMT2001-02530/) | ## More on this street Other addresses on 6th St with permits, nearest house number first: - [3265 6th St](https://nearbypermits.com/boulder/address/3265-6th-st/): newest permit May 5, 2026 - [3240 6th St](https://nearbypermits.com/boulder/address/3240-6th-st/): newest permit Apr 27, 2026 - [3235 6th St](https://nearbypermits.com/boulder/address/3235-6th-st/): newest permit Jun 9, 2025 - [3280 6th St](https://nearbypermits.com/boulder/address/3280-6th-st/): newest permit Jul 22, 2026 - [3285 6th St](https://nearbypermits.com/boulder/address/3285-6th-st/): newest permit Feb 2, 2026 - [3214 6th St](https://nearbypermits.com/boulder/address/3214-6th-st/): newest permit May 29, 2026 - [3180 6th St](https://nearbypermits.com/boulder/address/3180-6th-st/): newest permit Aug 20, 2026 - [3168 6th St](https://nearbypermits.com/boulder/address/3168-6th-st/): newest permit Apr 20, 2026 - [3160 6th St](https://nearbypermits.com/boulder/address/3160-6th-st/): newest permit Aug 3, 2026 - [3151 6th St](https://nearbypermits.com/boulder/address/3151-6th-st/): newest permit Aug 31, 2026 --- Source: Boulder Planning and Development Services permit data (https://www.arcgis.com/home/item.html?id=e3ff6248e4a547bcba31025d2c5c9fee). Checked 2026-10-06 14:21 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/3255-6th-st/