# Building permits at 1734 Walnut St, Boulder, CO

Four permits on record here. The newest, Oct 2, 2025: Replace 6 leaking gas pipe lines from the meter to the boiler (mechanical) room underground. 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 2, 2025 | Mechanical (HVAC) | Replace 6 leaking gas pipe lines from the meter to the boiler (mechanical) room underground. All new plastic glued vents for fuel burning appliances must undergo pressure testing. To facilitate the inspection process, please provide photographic evidence of the pressure test directly to the assigned | $1,000 | [MEC2025-01626](https://nearbypermits.com/boulder/permit/MEC2025-01626/) |
| May 30, 2012 | Roofing | Remove existing shingles and re-roof apartment with dimensional shingles in Moire Black per Landmark Alteration Certificate dated May 16, 2012. 43 squares, roof pitch represented by contractor to be 5:12 and 10:12 pitches. | $12,500 | [PMT2012-02624-RFG](https://nearbypermits.com/boulder/permit/PMT2012-02624-RFG/) |
| Jul 5, 2000 | Mechanical (HVAC) | Replace water heater unit 1 | $415 | [PMT2000-02766-MEC](https://nearbypermits.com/boulder/permit/PMT2000-02766-MEC/) |
| Jul 5, 2000 | Mechanical (HVAC) | Replace water heater | $415 | [PMT2000-02764-MEC](https://nearbypermits.com/boulder/permit/PMT2000-02764-MEC/) |

## More on this street

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

- [1726 Walnut St](https://nearbypermits.com/boulder/address/1726-walnut-st/): newest permit Oct 17, 2025
- [1743 Walnut St](https://nearbypermits.com/boulder/address/1743-walnut-st/): newest permit Apr 15, 2025
- [1708 Walnut St](https://nearbypermits.com/boulder/address/1708-walnut-st/): newest permit Feb 21, 2025
- [1707 Walnut St 106](https://nearbypermits.com/boulder/address/1707-walnut-st-106/): newest permit May 28, 2026
- [1802 Walnut St](https://nearbypermits.com/boulder/address/1802-walnut-st/): newest permit Oct 24, 2024
- [1655 Walnut St 301](https://nearbypermits.com/boulder/address/1655-walnut-st-301/): newest permit Jan 15, 2026
- [1818 Walnut St](https://nearbypermits.com/boulder/address/1818-walnut-st/): newest permit Sep 16, 2026
- [1819 Walnut St](https://nearbypermits.com/boulder/address/1819-walnut-st/): newest permit Dec 10, 2025
- [1634 Walnut St C](https://nearbypermits.com/boulder/address/1634-walnut-st-c/): newest permit Sep 24, 2026
- [1620 Walnut St](https://nearbypermits.com/boulder/address/1620-walnut-st/): newest permit May 13, 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 19:51 UTC. Nearby Permits, https://nearbypermits.com. JSON API and MCP server: https://nearbypermits.com/developers/

All 4 permits at this address: https://nearbypermits.com/boulder/address/1734-walnut-st/