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Seattle City Hall Plaza Waterproofing Replacement

City of SeattleUnited States

Purchaser

City of Seattle

Country

United States

Notice published

20 Mar 2026

Tenqual indexed

30 Apr 2026

Closing date

13 May 2026

Source ID

Docs found

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Tender documents

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Tender summary

Project Description: The work includes the removal and replacement of the existing waterproofing membrane, associated paving, and landscaping elements at the elevated plaza. Energy upgrades are not included in this bid. The project will be delivered in three (3) construction phases occurring over calendar years 2026-2027 to maintain site functionality and manage operational impacts. The work also includes the installation of one (1) new flagpole on the elevated plaza Upon completion of all construction activities, the plaza shall be fully restored to its original appearance. Engineer's Estimate: $6,864,865.00 Project Location: Seattle City Hall 600 4th Ave, Seattle, WA 98104

What to check before bidding

  • Issued by City of Seattle.
  • Located in United States.
  • Source notice seattle:PW#2025-029 on US OpenGov.
  • Notice published 20 Mar 2026; Tenqual indexed it 30 Apr 2026.
  • Deadline listed as 13 May 2026.
  • Source documents portal identified.
  • Create a free tender alert to catch similar opportunities before the deadline pressure starts.