# Alteration or repair permit 6579557-CN at 1800 9th Ave, Seattle

Seattle Department of Construction and Inspections permit 6579557-CN: issued Feb 3, 2017 for alteration or repair work at 1800 9th Ave. Construct tenant improvement to 6th and 7he floors of the south portion of existing office space per (STFI).

- Permit number: 6579557-CN
- Issued: Feb 3, 2017
- Type of work: Alteration or repair (city: Addition/Alteration, Commercial)
- Status: Finished (city: Completed)
- Reported cost: $20,000
- ZIP code: 98101
- All permits at this address: https://nearbypermits.com/seattle/address/1800-9th-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 2026-10-10 18:53 UTC. Nearby Permits, https://nearbypermits.com. JSON API and MCP server: https://nearbypermits.com/developers/

Every permit at 1800 9th Ave: https://nearbypermits.com/seattle/address/1800-9th-ave/