# Building permits at 4125 Riverside Ave, Boulder, CO

One permit here in the last two years. The newest, Feb 23: Install replacement 80% 70k btu furnace and replace existing ac w/a 20 SEER 3 ton heat pump and reconnect. 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 |
|---|---|---|---|---|
| Feb 23, 2026 | Mechanical (HVAC) | install replacement 80% 70k btu furnace and replace existing ac w/a 20 SEER 3 ton heat pump and reconnect 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, | $16,608 | [MEC2026-00278](https://nearbypermits.com/boulder/permit/MEC2026-00278/) |

## More on this street

Other addresses on Riverside Ave with permits, nearest house number first:

- [1470 Riverside Ave](https://nearbypermits.com/boulder/address/1470-riverside-ave/): newest permit Oct 14, 2025
- [1455 Riverside Ave](https://nearbypermits.com/boulder/address/1455-riverside-ave/): newest permit Jul 9, 2025
- [1450 Riverside Ave](https://nearbypermits.com/boulder/address/1450-riverside-ave/): newest permit Jun 13, 2025
- [1400 Riverside Ave](https://nearbypermits.com/boulder/address/1400-riverside-ave/): newest permit Jul 9, 2026
- [1370 Riverside Ave](https://nearbypermits.com/boulder/address/1370-riverside-ave/): newest permit Jan 22, 2025
- [1360 Riverside Ave](https://nearbypermits.com/boulder/address/1360-riverside-ave/): newest permit May 8, 2025
- [1350 Riverside Ave](https://nearbypermits.com/boulder/address/1350-riverside-ave/): newest permit Jul 23, 2025
- [1330 Riverside Ave](https://nearbypermits.com/boulder/address/1330-riverside-ave/): newest permit Aug 14, 2026
- [1245 Riverside Ave](https://nearbypermits.com/boulder/address/1245-riverside-ave/): newest permit Nov 18, 2024

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Source: Boulder Planning and Development Services permit data (https://www.arcgis.com/home/item.html?id=e3ff6248e4a547bcba31025d2c5c9fee). Checked 2026-10-07 13:03 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/4125-riverside-ave/