# Alteration or repair permit 6221625-CN at 820 18th Ave, Seattle

Seattle Department of Construction and Inspections permit 6221625-CN: issued Jul 22, 2010 for alteration or repair work at 820 18th Ave. Alterations to add new and relocate existing antennas on rooftop for minor communication utility of existing school building per plan.

- Permit number: 6221625-CN
- Issued: Jul 22, 2010
- Type of work: Alteration or repair (city: Addition/Alteration, Commercial)
- Status: Finished (city: Completed)
- Reported cost: $20,000
- ZIP code: 98122
- All permits at this address: https://nearbypermits.com/seattle/address/820-18th-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 15:16 UTC. Nearby Permits, https://nearbypermits.com. JSON API and MCP server: https://nearbypermits.com/developers/

Every permit at 820 18th Ave: https://nearbypermits.com/seattle/address/820-18th-ave/