# Building permits at 3121 7th St, Boulder, CO

Four permits on record here. The newest, Nov 18, 2025: VOID- 180 Days no activity YORK FURNACE (90%) CRAWLSPACE Any electrical work required beyond a like-for-like. 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 |
|---|---|---|---|---|
| Nov 18, 2025 | Mechanical (HVAC) | VOID- 180 Days no activity YORK FURNACE (90%) CRAWLSPACE Any electrical work required beyond a like-for-like replacement of equipment will require an electrical permit for inspection of the electrical scope. PLEASE NOTE: APPLICABLE ONLY TO SYSTEMS WITH FUEL BURNING APPLIANCES: All new plastic glued  | $2,590 | [MEC2025-02030](https://nearbypermits.com/boulder/permit/MEC2025-02030/) |
| Apr 7, 2010 | Mechanical (HVAC) | Replacement Forced Air Furnace | $1,900 | [PMT2010-20089-MEC](https://nearbypermits.com/boulder/permit/PMT2010-20089-MEC/) |
| Jul 11, 2005 | Roofing | Total tear-off and overlay of a single-family detached dwelling, Tamko Heritage 50-year, 24 squares, 4/12 pitch | $6,675 | [PMT2005-02670-RFG](https://nearbypermits.com/boulder/permit/PMT2005-02670-RFG/) |
| Jul 2, 1993 | Addition | Addition three bays for expansion of habitable are the original general permit | $40,000 | [PMT1993-04384](https://nearbypermits.com/boulder/permit/PMT1993-04384/) |

## More on this street

Other addresses on 7th St with permits, nearest house number first:

- [3114 7th St](https://nearbypermits.com/boulder/address/3114-7th-st/): newest permit Aug 4, 2026
- [3139 7th St](https://nearbypermits.com/boulder/address/3139-7th-st/): newest permit Mar 6, 2025
- [3091 7th St](https://nearbypermits.com/boulder/address/3091-7th-st/): newest permit Jan 17, 2025
- [3151 7th St](https://nearbypermits.com/boulder/address/3151-7th-st/): newest permit Mar 20, 2025
- [3161 7th St](https://nearbypermits.com/boulder/address/3161-7th-st/): newest permit May 5, 2026
- [3076 7th St](https://nearbypermits.com/boulder/address/3076-7th-st/): newest permit May 28, 2026
- [3185 7th St](https://nearbypermits.com/boulder/address/3185-7th-st/): newest permit Jun 15, 2026
- [3040 7th St](https://nearbypermits.com/boulder/address/3040-7th-st/): newest permit Mar 17, 2025
- [3034 7th St](https://nearbypermits.com/boulder/address/3034-7th-st/): newest permit Apr 15, 2025
- [3211 7th St](https://nearbypermits.com/boulder/address/3211-7th-st/): newest permit Nov 5, 2024

---
Source: Boulder Planning and Development Services permit data (https://www.arcgis.com/home/item.html?id=e3ff6248e4a547bcba31025d2c5c9fee). Checked 2026-10-07 06:44 UTC. Nearby Permits, https://nearbypermits.com. JSON API and MCP server: https://nearbypermits.com/developers/

All 4 permits at this address: https://nearbypermits.com/boulder/address/3121-7th-st/