# Building permits at 430 S 42nd St, Boulder, CO 14 permits on record here. The newest, May 22: REINSTATEMENT PERMIT OF RFG2024-00071 All Structures must be permitted separately Total tear-off & reroof of. 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 22, 2026 | Roofing | REINSTATEMENT PERMIT OF RFG2024-00071 All Structures must be permitted separately Total tear-off & reroof of SFD, __ squares of dimensional shingles on a pitch represented as _/12. All roof materials shall be installed per manufacturer?s specs. Mid-roof inspection is required if 1) pitch is less tha | $15,000 | [RFG2026-00471](https://nearbypermits.com/boulder/permit/RFG2026-00471/) | | Feb 23, 2024 | Roofing | *Voided for inactivity - no inspections within 180 days* Total tear-off & reroof of SFD, 21 squares of TRU Def duration flex dimensional shingles on a pitch represented as 6/12. All roof materials shall be installed per manufacturer?s specs. Mid-roof inspection required if pitch is less than 4/12. A | $15,752 | [RFG2024-00071](https://nearbypermits.com/boulder/permit/RFG2024-00071/) | | Dec 28, 2015 | Electrical | New unconditioned sun/patio room built at the rear of the house over an existing deck. Scope includes minor electrical work. | Not listed | [PMT2015-05711-ELE](https://nearbypermits.com/boulder/permit/PMT2015-05711-ELE/) | | Dec 28, 2015 | New building | New unconditioned sun/patio room built at the rear of the house over an existing deck. Scope includes minor electrical work. | $14,000 | [PMT2015-05711](https://nearbypermits.com/boulder/permit/PMT2015-05711/) | | Jan 10, 2013 | Mechanical (HVAC) | Replacement Water Heater | $1,035 | [PMT2013-20013-MEC](https://nearbypermits.com/boulder/permit/PMT2013-20013-MEC/) | | Aug 17, 2012 | Mechanical (HVAC) | Installation of air conditioner for residence, including electrical wiring and hook-up | $3,200 | [PMT2012-04043-MEC](https://nearbypermits.com/boulder/permit/PMT2012-04043-MEC/) | | Aug 17, 2012 | Electrical | Installation of air conditioner for residence, including electrical wiring and hook-up | $100 | [PMT2012-04043-ELE](https://nearbypermits.com/boulder/permit/PMT2012-04043-ELE/) | | Apr 6, 2009 | Roofing | Remove existing shingles and re-roof single-family residence with dimensional shingles. 4:12 pitch, 23 squares. | $7,220 | [PMT2009-01120-RFG](https://nearbypermits.com/boulder/permit/PMT2009-01120-RFG/) | | Nov 22, 2005 | Mechanical (HVAC) | Partial rewire of existing SFD and add heat ducts and cold air returns to basement. | $1,300 | [PMT2005-04531-MEC](https://nearbypermits.com/boulder/permit/PMT2005-04531-MEC/) | | Nov 22, 2005 | Electrical | Partial rewire of existing SFD and add heat ducts and cold air returns to basement. | $1,000 | [PMT2005-04531-ELE](https://nearbypermits.com/boulder/permit/PMT2005-04531-ELE/) | | Jan 7, 1997 | Alteration or repair | Partition wall to isolate mechanical room the original general permit number i | $500 | [PMT1996-08466](https://nearbypermits.com/boulder/permit/PMT1996-08466/) | | Jul 16, 1991 | Alteration or repair | Basement windows the original general permit number is 29. | $1,500 | [PMT1991-00029](https://nearbypermits.com/boulder/permit/PMT1991-00029/) | | Aug 4, 1989 | Alteration or repair | Replace wdws. The original general permit number is p4427. | $850 | [PMT1989-P4427](https://nearbypermits.com/boulder/permit/PMT1989-P4427/) | | May 18, 1988 | Roofing | Roofing REROOF | $560 | [PMT1988-M8368-RFG](https://nearbypermits.com/boulder/permit/PMT1988-M8368-RFG/) | ## 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 S 42nd St with permits, nearest house number first: - [425 S 42nd St](https://nearbypermits.com/boulder/address/425-s-42nd-st/): newest permit Oct 24, 2025 - [420 S 42nd St](https://nearbypermits.com/boulder/address/420-s-42nd-st/): newest permit Mar 4, 2025 - [375 S 42nd St](https://nearbypermits.com/boulder/address/375-s-42nd-st/): newest permit May 15, 2026 - [365 S 42nd St](https://nearbypermits.com/boulder/address/365-s-42nd-st/): newest permit Dec 16, 2025 - [360 S 42nd St](https://nearbypermits.com/boulder/address/360-s-42nd-st/): newest permit Jun 2, 2026 - [345 S 42nd St](https://nearbypermits.com/boulder/address/345-s-42nd-st/): newest permit May 8, 2026 - [520 S 42nd St](https://nearbypermits.com/boulder/address/520-s-42nd-st/): newest permit May 14, 2026 - [530 S 42nd St](https://nearbypermits.com/boulder/address/530-s-42nd-st/): newest permit Mar 17, 2026 - [540 S 42nd St](https://nearbypermits.com/boulder/address/540-s-42nd-st/): newest permit Sep 4, 2026 - [545 S 42nd St](https://nearbypermits.com/boulder/address/545-s-42nd-st/): newest permit Sep 1, 2026 --- Source: Boulder Planning and Development Services permit data (https://www.arcgis.com/home/item.html?id=e3ff6248e4a547bcba31025d2c5c9fee). Checked 2026-10-11 07:29 UTC. Nearby Permits, https://nearbypermits.com. JSON API and MCP server: https://nearbypermits.com/developers/ All 14 permits at this address: https://nearbypermits.com/boulder/address/430-s-42nd-st/