# Building permits at 3867 21st St, Boulder, CO

One permit on record here. The newest, May 4: Small Cell Facility: Due to system limitations. 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 4, 2026 | Electrical | Small Cell Facility: Due to system limitations, wireless facility permits have two permits that require review, approval and inspection together. Permits ELE2025-00743 and WCF2025-00024. Small Cell - TI5264 WCF Standalone Pole (3867 21st St): Proposed standalone small cell with antennas and associat | $6,000 | [ELE2025-00743](https://nearbypermits.com/boulder/permit/ELE2025-00743/) |

## 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 21st St with permits, nearest house number first:

- [3639 21st St](https://nearbypermits.com/boulder/address/3639-21st-st/): newest permit Dec 6, 2024
- [3633 21st St](https://nearbypermits.com/boulder/address/3633-21st-st/): newest permit Oct 10, 2024
- [3621 21st St](https://nearbypermits.com/boulder/address/3621-21st-st/): newest permit Jun 24, 2026
- [2980 21st St](https://nearbypermits.com/boulder/address/2980-21st-st/): newest permit Jul 20, 2026
- [2941 21st St](https://nearbypermits.com/boulder/address/2941-21st-st/): newest permit Nov 18, 2025
- [2921 21st St](https://nearbypermits.com/boulder/address/2921-21st-st/): newest permit Oct 7, 2025
- [2881 21st St](https://nearbypermits.com/boulder/address/2881-21st-st/): newest permit Sep 23, 2026
- [2860 21st St](https://nearbypermits.com/boulder/address/2860-21st-st/): newest permit Aug 18, 2026
- [2820 21st St](https://nearbypermits.com/boulder/address/2820-21st-st/): newest permit Jul 28, 2026
- [2327 21st St](https://nearbypermits.com/boulder/address/2327-21st-st/): newest permit Aug 25, 2026

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Source: Boulder Planning and Development Services permit data (https://www.arcgis.com/home/item.html?id=e3ff6248e4a547bcba31025d2c5c9fee). Checked 2026-10-08 14:28 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/3867-21st-st/