# Building permits at 3229 4th St, Boulder, CO

One permit here in the last two years. The newest, Sep 16, 2025: Replace standard tank water heater with high efficient tankless water heater (0.95 UEF) Install a Navien. 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 |
|---|---|---|---|---|
| Sep 16, 2025 | Mechanical (HVAC) | Replace standard tank water heater with high efficient tankless water heater (0.95 UEF) Install a Navien NPE-240A2 tankless water heater including gas and water piping running behind the furnace to the new location in the closet adjacent to the laundry and mechanical room, flue and intake piping thr | $6,692 | [MEC2025-01520](https://nearbypermits.com/boulder/permit/MEC2025-01520/) |

## More on this street

Other addresses on 4th St with permits, nearest house number first:

- [3231 4th St](https://nearbypermits.com/boulder/address/3231-4th-st/): newest permit Aug 21, 2025
- [3232 4th St](https://nearbypermits.com/boulder/address/3232-4th-st/): newest permit Dec 12, 2024
- [3223 4th St](https://nearbypermits.com/boulder/address/3223-4th-st/): newest permit Apr 22, 2025
- [3239 4th St](https://nearbypermits.com/boulder/address/3239-4th-st/): newest permit Oct 21, 2024
- [3201 4th St](https://nearbypermits.com/boulder/address/3201-4th-st/): newest permit Sep 11, 2026
- [3171 4th St](https://nearbypermits.com/boulder/address/3171-4th-st/): newest permit Sep 8, 2026
- [3160 4th St](https://nearbypermits.com/boulder/address/3160-4th-st/): newest permit Oct 6, 2025
- [3302 4th St](https://nearbypermits.com/boulder/address/3302-4th-st/): newest permit Jul 3, 2025
- [3307 4th St](https://nearbypermits.com/boulder/address/3307-4th-st/): newest permit Apr 13, 2026
- [3309 4th St](https://nearbypermits.com/boulder/address/3309-4th-st/): newest permit May 22, 2025

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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 20:37 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/3229-4th-st/