Seattle City Hall (SCH) Roof and Windows Replacement
Closed State & local contract opportunity Posted
- Solicitation number
- PW#2026-011
- State
- Washington
- Responses due
Opportunity facts
- Jurisdictions
- Points of contact
-
- Pamela Honma pamela.honma@seattle.gov (206) 733-9941
- Zain Aldahlaki zain.aldahlaki@seattle.gov (206) 618-4286
Opportunity details come from constructionbidsource.com. Updated .
About this opportunity
The City of Seattle Department of Finance and Administrative Services is soliciting bids for roof and windows replacement at Seattle City Hall (600 4th Avenue), including green roof replacement, waterproofing, roof drainage repairs, curtain wall window panels replacement, fall protection and bird deterrent systems installation, and building envelope improvements, with bids due September 23, 2026 at 2:00 p.m.
All bidders must submit an Inclusion Plan demonstrating good faith efforts to achieve 15 percent WMBE utilization based on past performance for roofing-type projects. The project is subject to the City of Seattle's Community Workforce Agreement and Priority Hire requirements under Seattle Municipal Code 20.37, and bidders must comply with apprentice utilization standards and equal benefits provisions.
The contract is structured as a lump-sum, stipulated-sum single-prime award. The Architect's Engineer estimate for the base bid is $4.552 million, with four bid alternates ranging from a deductive of $48,332 to an additive of $150,673. Award is anticipated within 60 days of bid opening.
Mandatory responsibility criteria include Washington State contractor registration, unified business identifier number, industrial insurance coverage, and prevailing wage training certification. Bidders must submit a 5 percent bid guaranty and payment and performance bond. Bidders for projects over $1 million must submit a Bidder/Subcontractor List identifying subcontractors for electrical and plumbing installation work or indicating self-performance.
Three mandatory pre-bid site inspections are scheduled for September 2, 8, and 10, 2026, with meetings at the 5th Avenue Lobby of Seattle City Hall. Questions from contractors are due by September 17, 2026.
Opportunity text
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. For purposes of the Inclusion Plan, this is considered a Roofing type of project with a Past Performance of PERCENT 15% WMBE utilization rates based on completed projects
Files
| File | Type | Posted |
|---|---|---|
| PW_2026-011_SCH_ROOF_AND_WINDOWS_REPLACEMENT_Project_Manual.pdf |
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