# New building permit 7121560-CN at 4052 Williams Ave W, Seattle

Seattle Department of Construction and Inspections permit 7121560-CN: issued Jul 1, 2026 for new building work at 4052 Williams Ave W. Construct new one-family dwelling (South DADU) per plan. (Establish use as single-family residence with detached accessory dwelling unit per Land Use Code. Construct two new one-family dwellings per plan. Review and processing for two records under 7100718-CN.).

- Permit number: 7121560-CN
- Issued: Jul 1, 2026
- Type of work: New building (city: Addition/Alteration, Single Family/Duplex)
- Status: Issued (city: Issued)
- Reported cost: $219,389
- ZIP code: 98199
- All permits at this address: https://nearbypermits.com/seattle/address/4052-williams-ave-w/

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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 2026-10-08 16:49 UTC. Nearby Permits, https://nearbypermits.com. JSON API and MCP server: https://nearbypermits.com/developers/

Every permit at 4052 Williams Ave W: https://nearbypermits.com/seattle/address/4052-williams-ave-w/