# Building permits at 615 S 42nd St, Boulder, CO

Six permits on record here. The newest, Jan 22: Alteration and addition to a one-story home that includes the addition of a garage and mudroom. 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 |
|---|---|---|---|---|
| Jan 22, 2026 | Addition | Alteration and addition to a one-story home that includes the addition of a garage and mudroom, a remodel of the first floor and finished basement. Total of 4 bedrooms and 3 bathrooms. Basement includes a recreation room, two bedrooms, an office, and one full bathroom. First floor includes kitchen,  | $220,000 | [BLD-SFD2025-00493](https://nearbypermits.com/boulder/permit/BLD-SFD2025-00493/) |
| Dec 9, 2025 | Mechanical (HVAC) | 3 ton electric heat pump installation replacing an existing gas furnace and existing AC plus adding a 5KW heat strip for a back up heat. The gas line will be capped at the removed furnace location. Three circuit breakers will be installed for heat pump and heat strip operation and no service upgrade | $16,995 | [MEC2025-02158](https://nearbypermits.com/boulder/permit/MEC2025-02158/) |
| Aug 19, 2024 | Plumbing | VOID- Over 180 Days no activity replace water heater | $2,700 | [MEC2024-01200](https://nearbypermits.com/boulder/permit/MEC2024-01200/) |
| Dec 1, 2010 | Roofing | Total tear off and reroof of existing single family dwelling. Owens Corning Oakridge Pro 30-yr shingles, 16 squares, 4/12 pitch as indicated on permit application. | $3,552 | [PMT2010-05325-RFG](https://nearbypermits.com/boulder/permit/PMT2010-05325-RFG/) |
| Feb 13, 2003 | Electrical | Electrical permit for air conditioning unit (w/ GFI) and furnace installation. See PMT2003-00526 for mechanical by separate permit. | $1,700 | [PMT2003-00553-ELE](https://nearbypermits.com/boulder/permit/PMT2003-00553-ELE/) |
| Feb 13, 2003 | Mechanical (HVAC) | Installation of a forced air furnace (80k BTU) and a new air conditioning unit. | $3,189 | [PMT2003-00526-MEC](https://nearbypermits.com/boulder/permit/PMT2003-00526-MEC/) |

## 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:

- [620 S 42nd St](https://nearbypermits.com/boulder/address/620-s-42nd-st/): newest permit Aug 6, 2026
- [640 S 42nd St](https://nearbypermits.com/boulder/address/640-s-42nd-st/): newest permit Aug 5, 2026
- [645 S 42nd St](https://nearbypermits.com/boulder/address/645-s-42nd-st/): newest permit Jun 12, 2025
- [655 S 42nd St](https://nearbypermits.com/boulder/address/655-s-42nd-st/): newest permit Mar 20, 2025
- [660 S 42nd St](https://nearbypermits.com/boulder/address/660-s-42nd-st/): newest permit Apr 24, 2026
- [550 S 42nd St](https://nearbypermits.com/boulder/address/550-s-42nd-st/): newest permit Jun 22, 2026
- [545 S 42nd St](https://nearbypermits.com/boulder/address/545-s-42nd-st/): newest permit Sep 1, 2026
- [540 S 42nd St](https://nearbypermits.com/boulder/address/540-s-42nd-st/): newest permit Sep 4, 2026
- [530 S 42nd St](https://nearbypermits.com/boulder/address/530-s-42nd-st/): newest permit Mar 17, 2026
- [520 S 42nd St](https://nearbypermits.com/boulder/address/520-s-42nd-st/): newest permit May 14, 2026

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Source: Boulder Planning and Development Services permit data (https://www.arcgis.com/home/item.html?id=e3ff6248e4a547bcba31025d2c5c9fee). Checked 2026-10-13 20:50 UTC. Nearby Permits, https://nearbypermits.com. JSON API and MCP server: https://nearbypermits.com/developers/

All 6 permits at this address: https://nearbypermits.com/boulder/address/615-s-42nd-st/