# Alteration or repair permit 6246542-CN at 999 3rd Ave, Seattle

Seattle Department of Construction and Inspections permit 6246542-CN: issued May 13, 2010 for alteration or repair work at 999 3rd Ave. Structural alterations to create convenience staircase between floors 31 and 32 of existing office (Parsons Brinckerhoff) per plan.

- Permit number: 6246542-CN
- Issued: May 13, 2010
- Type of work: Alteration or repair (city: Addition/Alteration, Commercial)
- Status: Finished (city: Completed)
- Reported cost: $115,000
- ZIP code: 98104
- All permits at this address: https://nearbypermits.com/seattle/address/999-3rd-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 2026-10-18 05:29 UTC. Nearby Permits, https://nearbypermits.com. JSON API and MCP server: https://nearbypermits.com/developers/

Every permit at 999 3rd Ave: https://nearbypermits.com/seattle/address/999-3rd-ave/