Seattle City Hall roof and windows replacement
Seattle City Hall (SCH) Roof and Windows Replacement, Solicitation 296955, issued by City of Seattle.
At a glance
The City of Seattle is soliciting bids to reroof Seattle City Hall and replace its curtain wall windows, including green roof replacement, waterproofing repairs, and installation of fall protection and bird deterrent systems. The base bid estimate is $4.55 million, with several optional alternates available. Work will be performed at the City Hall building located at 600 4th Ave, Seattle.
Key facts
- Issuing agency
- City of Seattle
- Solicitation number
- 296955
- Type
- purchase
- Posted
- Aug 26, 2026
- Response deadline
- Sep 23, 2026, 5:00 PM EDT
- Pre-bid meeting
- Sep 2, 2026, 3:00 PM EDT
- Place of performance
- King County, WA
Official description
Solicitation #PW#2026-011. Issued by Public Works. Project Description: The project consists of reroofing and related building envelope improvements at Seattle City Hall, including green roof replacement, waterproofing, roof drainage repairs, curtain wall window panels replacement, installation of fall protection and bird deterrent systems, and associated maintenance improvements necessary to restore and extend the service life of the facility. Engineer's Estimate: Base Bid: $4,552,000.00 Bid Alternate #1 Surface Applied Glaze: $28,721.00 Bid Alternate #2 Waterproof Membrane Augmentation; RT-3: ($48,332.00) Bid Alternate #3 New PVC Roofing Membrane; RT-4: $150,673.00 Bid Alternate #4 New PVC Roofing Membrane; RT-5: $72,758.00 Project Location: Seattle City Hall 600 4 th Ave, Seattle, WA 98104
Respond to this bid
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