# Building permits at 3121 Redstone Ln, Boulder, CO

One permit here in the last two years. The newest, Jan 12: Install a ductless mini-split heat pump system consisting of one outdoor condenser and associated indoor. 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 12, 2026 | Mechanical (HVAC) | Install a ductless mini-split heat pump system consisting of one outdoor condenser and associated indoor wall-mounted units. Install refrigerant line sets, condensate drainage, electrical disconnect, and dedicated circuits as required. System will be pressure tested, evacuated, charged, started, and | $1,300 | [MEC2025-02374](https://nearbypermits.com/boulder/permit/MEC2025-02374/) |

## More on this street

Other addresses on Redstone Ln with permits, nearest house number first:

- [3125 Redstone Ln](https://nearbypermits.com/boulder/address/3125-redstone-ln/): newest permit Jan 3, 2025
- [3095 Redstone Ln E4](https://nearbypermits.com/boulder/address/3095-redstone-ln-e4/): newest permit Dec 18, 2025
- [3091 Redstone Ln](https://nearbypermits.com/boulder/address/3091-redstone-ln/): newest permit Feb 20, 2026
- [3089 Redstone Ln](https://nearbypermits.com/boulder/address/3089-redstone-ln/): newest permit Jan 29, 2026
- [3154 Redstone Ln](https://nearbypermits.com/boulder/address/3154-redstone-ln/): newest permit Jan 12, 2026
- [3087 Redstone Ln](https://nearbypermits.com/boulder/address/3087-redstone-ln/): newest permit Dec 31, 2025
- [3156 Redstone Ln](https://nearbypermits.com/boulder/address/3156-redstone-ln/): newest permit Jul 8, 2026
- [3160 Redstone Ln G7](https://nearbypermits.com/boulder/address/3160-redstone-ln-g7/): newest permit Feb 20, 2026
- [3071 Redstone Ln](https://nearbypermits.com/boulder/address/3071-redstone-ln/): newest permit Jun 10, 2026
- [3047 Redstone Ln](https://nearbypermits.com/boulder/address/3047-redstone-ln/): newest permit Jan 29, 2026

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Source: Boulder Planning and Development Services permit data (https://www.arcgis.com/home/item.html?id=e3ff6248e4a547bcba31025d2c5c9fee). Checked 2026-10-06 16:08 UTC. Nearby Permits, https://nearbypermits.com. JSON API and MCP server: https://nearbypermits.com/developers/

The one permit at this address: https://nearbypermits.com/boulder/address/3121-redstone-ln/