Seattle City Hall Plaza Waterproofing Replacement

The City of Seattle is seeking bids for the Seattle City Hall Plaza Waterproofing Replacement project. The project involves the removal and replacement of the existing waterproofing membrane, associated paving, and landscaping elements at the elevated plaza. The project will be delivered in three construction phases over calendar years 2026-2027. The engineer's estimate for the project is $6,864,865.00. The project requires bidders to complete and submit a Women and Minority Business Inclusion Plan, which includes aspirational WMBE goals, business support strategies, and WMBE guarantees. • The project requires the removal and replacement of the existing waterproofing membrane. • The project includes the installation of one new flagpole on the elevated plaza. • The project will be delivered in three construction phases over calendar years 2026-2027. • The engineer's estimate for the project is $6,864,865.00. • The project requires bidders to complete and submit a Women and Minority Business Inclusion Plan.