# Building permits at 2105 Walnut St 2a, Boulder, CO

Two permits on record here. The newest, Sep 9: Replace 8 windows like for like with retrofit vinyl windows. 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 9, 2026 | Alteration or repair | Replace 8 windows like for like with retrofit vinyl windows, installed per manufacturer?s specifications. Window replacements require rough and final siding inspections. Rough Inspections are for window flashings/ waterproofing only (bottoms of window openings). Pictures are acceptable for Rough ins | $8,260 | [BLD-MFD2026-00113](https://nearbypermits.com/boulder/permit/BLD-MFD2026-00113/) |
| Dec 23, 2014 | Alteration or repair | Extend existing loft/bedroom space for a total of 66 s.f. of additional space. No MEP's associated with this project. | $3,496 | [PMT2014-05312](https://nearbypermits.com/boulder/permit/PMT2014-05312/) |

## More on this street

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

- [2113 Walnut St 6b](https://nearbypermits.com/boulder/address/2113-walnut-st-6b/): newest permit Sep 22, 2025
- [2155 Walnut St](https://nearbypermits.com/boulder/address/2155-walnut-st/): newest permit May 7, 2026
- [2046 Walnut St](https://nearbypermits.com/boulder/address/2046-walnut-st/): newest permit Nov 12, 2024
- [2013 Walnut St](https://nearbypermits.com/boulder/address/2013-walnut-st/): newest permit Nov 5, 2024
- [2003 Walnut St](https://nearbypermits.com/boulder/address/2003-walnut-st/): newest permit Jul 2, 2026
- [2211 Walnut St](https://nearbypermits.com/boulder/address/2211-walnut-st/): newest permit Oct 14, 2025
- [2247 Walnut St](https://nearbypermits.com/boulder/address/2247-walnut-st/): newest permit Aug 26, 2026
- [1940 Walnut St 200](https://nearbypermits.com/boulder/address/1940-walnut-st-200/): newest permit Jan 27, 2025
- [1921 Walnut St](https://nearbypermits.com/boulder/address/1921-walnut-st/): newest permit Sep 2, 2025
- [2315 Walnut St](https://nearbypermits.com/boulder/address/2315-walnut-st/): newest permit May 13, 2026

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Source: Boulder Planning and Development Services permit data (https://www.arcgis.com/home/item.html?id=e3ff6248e4a547bcba31025d2c5c9fee). Checked 2026-10-07 01:19 UTC. Nearby Permits, https://nearbypermits.com. JSON API and MCP server: https://nearbypermits.com/developers/

Both permits at this address: https://nearbypermits.com/boulder/address/2105-walnut-st-2a/