# Addition permit BLD-SFD2025-00023 at 900 Maxwell Ave, Boulder

Boulder Planning and Development Services permit BLD-SFD2025-00023: issued Oct 17, 2025 for addition work at 900 Maxwell Ave. REVISION 9/11/26- Revisions to the layout of the rooms and the foundation conditions under the exterior stairwell. A 605 SF addition through a basement conversion from an existing uninhabitable space below the existing first floor. Some interior and exterior renovations are part of the scope of work such as new stairs and porch.

- Permit number: BLD-SFD2025-00023
- Issued: Oct 17, 2025
- Type of work: Addition (city: Building Permit - Single Family Detached Dwelling, Addition and Alteration)
- Status: Applied (city: Revisions - Resubmit)
- Reported cost: $521,256
- ZIP code: 80304
- All permits at this address: https://nearbypermits.com/boulder/address/900-maxwell-ave/

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Source: Boulder Planning and Development Services permit data (https://www.arcgis.com/home/item.html?id=e3ff6248e4a547bcba31025d2c5c9fee). Checked 2026-10-08 05:49 UTC. Nearby Permits, https://nearbypermits.com. JSON API and MCP server: https://nearbypermits.com/developers/

Every permit at 900 Maxwell Ave: https://nearbypermits.com/boulder/address/900-maxwell-ave/