# Addition permit 6975308-CN at 401 20th Ave, Seattle

Seattle Department of Construction and Inspections permit 6975308-CN: issued Mar 11, 2024 for addition work at 401 20th Ave. Construct additions and alterations to existing single family residence per plan.

- Permit number: 6975308-CN
- Issued: Mar 11, 2024
- Type of work: Addition (city: Addition/Alteration, Single Family/Duplex)
- Status: Finished (city: Completed)
- Reported cost: $168,253
- ZIP code: 98122
- All permits at this address: https://nearbypermits.com/seattle/address/401-20th-ave/

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Source: Seattle Department of Construction and Inspections permit data (https://cos-data.seattle.gov/d/76t5-zqzr), City of Seattle. Checked 2026-10-09 07:48 UTC. Nearby Permits, https://nearbypermits.com. JSON API and MCP server: https://nearbypermits.com/developers/

Every permit at 401 20th Ave: https://nearbypermits.com/seattle/address/401-20th-ave/