# Building permits at 1655 Walnut St 301, Boulder, CO

Four permits on record here. The newest, Jan 15: One time 180-day permit extension granted. 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 15, 2026 | Mechanical (HVAC) | One time 180-day permit extension granted. All work and inspections must be completed by 12/15/2026. This permit is for the whole building not just a particular unit. Replacement of 2 CRAC units; Like for Like PLEASE NOTE: APPLICABLE ONLY TO SYSTEMS WITH FUEL BURNING APPLIANCES: All new plastic glue | $32,488 | [MEC2026-00047](https://nearbypermits.com/boulder/permit/MEC2026-00047/) |
| Oct 30, 2025 | Mechanical (HVAC) | *Voided for inactivity - no inspections for 180 days* REPLACE CU & FCU in #301 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 photographi | $11,700 | [MEC2025-01472](https://nearbypermits.com/boulder/permit/MEC2025-01472/) |
| Jul 20, 1990 | Fire systems | Fire fire sprklr sys | Not listed | [PMT1990-R1812-FIR](https://nearbypermits.com/boulder/permit/PMT1990-R1812-FIR/) |
| Jul 16, 1990 | Alteration or repair | Ten fnsh. The original general permit number is r1633. | $25,000 | [PMT1990-R1633](https://nearbypermits.com/boulder/permit/PMT1990-R1633/) |

## 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 Walnut St with permits, nearest house number first:

- [1634 Walnut St C](https://nearbypermits.com/boulder/address/1634-walnut-st-c/): newest permit Sep 24, 2026
- [1620 Walnut St](https://nearbypermits.com/boulder/address/1620-walnut-st/): newest permit May 13, 2025
- [1603 Walnut St](https://nearbypermits.com/boulder/address/1603-walnut-st/): newest permit Jul 20, 2026
- [1707 Walnut St 106](https://nearbypermits.com/boulder/address/1707-walnut-st-106/): newest permit May 28, 2026
- [1708 Walnut St](https://nearbypermits.com/boulder/address/1708-walnut-st/): newest permit Feb 21, 2025
- [1726 Walnut St](https://nearbypermits.com/boulder/address/1726-walnut-st/): newest permit Oct 17, 2025
- [1734 Walnut St](https://nearbypermits.com/boulder/address/1734-walnut-st/): newest permit Oct 2, 2025
- [1743 Walnut St](https://nearbypermits.com/boulder/address/1743-walnut-st/): newest permit Apr 15, 2025
- [1545 Walnut St](https://nearbypermits.com/boulder/address/1545-walnut-st/): newest permit Jun 9, 2025
- [1802 Walnut St](https://nearbypermits.com/boulder/address/1802-walnut-st/): newest permit Oct 24, 2024

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Source: Boulder Planning and Development Services permit data (https://www.arcgis.com/home/item.html?id=e3ff6248e4a547bcba31025d2c5c9fee). Checked 2026-10-08 16:29 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/1655-walnut-st-301/