# Building permits at 850 Locust Ave, Boulder, CO

Nine permits on record here. The newest, Oct 8, 2025: Add Approximately 404 sq.ft. 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 |
|---|---|---|---|---|
| Oct 8, 2025 | Addition | Add Approximately 404 sq.ft. to main level of existing single family home with master bedroom and bath | $150,000 | [BLD-SFD2025-00189](https://nearbypermits.com/boulder/permit/BLD-SFD2025-00189/) |
| Dec 6, 2023 | Mechanical (HVAC) | Installation of iron gas line from gas meter exposed on house and under deck to owners Zero Clearance fireplace for new gas insert | $1,476 | [MEC2023-01825](https://nearbypermits.com/boulder/permit/MEC2023-01825/) |
| Sep 2, 2020 | Fence, wall or deck | *Voided for inactivity - no inspections within 180 days* *103 Linear Ft of 7 Ft Tall Cedar Fence along the East side of the property with a gate in the North Eastern corner of the house. | $4,000 | [FEN2020-00057](https://nearbypermits.com/boulder/permit/FEN2020-00057/) |
| Jun 10, 2016 | Mechanical (HVAC) | Replacement Water Heater | $2,310 | [PMT2016-20180-MEC](https://nearbypermits.com/boulder/permit/PMT2016-20180-MEC/) |
| Aug 5, 2015 | Mechanical (HVAC) | Replacement Forced Air Furnace | $5,700 | [PMT2015-20210-MEC](https://nearbypermits.com/boulder/permit/PMT2015-20210-MEC/) |
| Mar 15, 2013 | New building | Demolition of an existing 200 sf deck off the rear of the house (existing rear porch roof -- no work) construct a replacement 288 sf deck with staircase to grade. See condtion notes regarding survey requirement. | $8,500 | [PMT2013-01146](https://nearbypermits.com/boulder/permit/PMT2013-01146/) |
| Jan 14, 2011 | Roofing | Total tear off and reroof of existing single family dwelling. Owens Corning dimensional shingles, 21 squares, 8/12 pitch as indicated on permit application. | $6,225 | [PMT2011-00198-RFG](https://nearbypermits.com/boulder/permit/PMT2011-00198-RFG/) |
| Mar 16, 1988 | New building | 1 Dw un. The original general permit number is n7033. | $76,000 | [PMT1988-N7033](https://nearbypermits.com/boulder/permit/PMT1988-N7033/) |
| Mar 16, 1988 | New building | 1 Dw un the original general permit number is 7033. | $76,000 | [PMT1988-07033](https://nearbypermits.com/boulder/permit/PMT1988-07033/) |

## More on this street

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

- [880 Locust Ave](https://nearbypermits.com/boulder/address/880-locust-ave/): newest permit Nov 18, 2025
- [890 Locust Ave](https://nearbypermits.com/boulder/address/890-locust-ave/): newest permit Sep 11, 2026
- [895 Locust Ave](https://nearbypermits.com/boulder/address/895-locust-ave/): newest permit Aug 17, 2026
- [920 Locust Ave](https://nearbypermits.com/boulder/address/920-locust-ave/): newest permit Oct 30, 2025
- [734 Locust Ave](https://nearbypermits.com/boulder/address/734-locust-ave/): newest permit Dec 16, 2024
- [982 Locust Ave](https://nearbypermits.com/boulder/address/982-locust-ave/): newest permit Sep 10, 2026
- [712 Locust Ave](https://nearbypermits.com/boulder/address/712-locust-ave/): newest permit Jan 26, 2026
- [700 Locust Ave](https://nearbypermits.com/boulder/address/700-locust-ave/): newest permit Nov 18, 2025
- [1040 Locust Ave](https://nearbypermits.com/boulder/address/1040-locust-ave/): newest permit Jun 1, 2026
- [652 Locust Ave](https://nearbypermits.com/boulder/address/652-locust-ave/): newest permit Apr 1, 2025

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Source: Boulder Planning and Development Services permit data (https://www.arcgis.com/home/item.html?id=e3ff6248e4a547bcba31025d2c5c9fee). Checked 2026-10-07 06:48 UTC. Nearby Permits, https://nearbypermits.com. JSON API and MCP server: https://nearbypermits.com/developers/

All 9 permits at this address: https://nearbypermits.com/boulder/address/850-locust-ave/