Project Information

Bid Title

Central West Headquarters Re-Roof

Issuing Agency

City of Seattle

Location

Washington

Published Date

Jul 29, 2026

Closing Date

Aug 19, 2026

Government Level

State & Local

Status

Closed

Ref. #

PW#2025-028

Original Source

Join to Access Full Details

Bid Inquiries

Join to Access Full Details

Bid Documents

Join to Access Full Details

Project Description

Project ID: PW#2025-028

Title: Central West Headquarters Re-Roof

Addenda: 1

Release Date: 7/29/2026

Due Date: 8/19/2026

Follow

Central West Headquarters Re-Roof

Last updated by Addendum #1 on Jul 30, 2026 6:24 AM

Public Works

Project ID: PW#2025-028

Release Date: Wednesday, July 29, 2026

· Due Date: Wednesday, August 19, 2026 2:00pm

Posted Wednesday, July 29, 2026 6:00am

All dates & times in Pacific Time

Draft Response No Bid20 days, 19 hours, 36 minutes

Post Information

Posted At:Wed, Jul 29, 2026 6:00 AM
Sealed Bid Process:Yes (Bids Sealed / Pricing Sealed)
Private Bid:No

Overview

Summary

Project Description: RE-ROOF - REMOVE AND DISPOSE OF THE EXISTING BUILT-UP ROOF MEMBRANE DOWN TO THE EXISTING T&G WOOD DECKING AT HIGH ROOF AND BARREL VAULT. REMOVE AND DISPOSE OF BUILT-UP ROOF TO PLYWOOD DECK AT LOW ROOF. REMOVE AND DISPOSE OF CORRUGATED METAL SIDING AT GABLE ENDS OF VAULTED ROOF. INSTALL TAPERED POLYISOCYANURATE INSULATION, AND COVERBOARD. MECHANICALLY FASTEN THE FIRST LAYER OF INSULATION AND FULLY ADHERE THE SUBSEQUENT LAYERS. INSTALL NEW EPDM ROOF MEMBRANE AT FLAT ROOFS. INSTALL STANDING SEAM METAL ROOF AT VAULTED ROOF AND UNDERLAYMENT. RAISE PARAPET HEIGHT TO ACCOMMODATE NEW TAPERED INSULATION. INSTALL NEW SHEET METAL FLASHINGS AND PARAPET COPING. INSTALL SAFETY RAILS. INSTALL LADDERS.

BID ADDITIVE NO. 1: STRUCTURAL UPGRADES. INSTALL 5/8" PLYWOOD ROOF DIAPHRAGM.

Engineer's Estimate: $581,072.00 Additive #1: $137,616.00

Project Location: 1403 W Howe St Seattle WA 98119

Timeline

Release Project Date:

July 29, 2026

Pre-Bid Site Meeting #1 ( Mandatory for Bidders to attend at least 1 of the 2 Pre-Bid Meetings):

August 5, 2026, 11:00am

Pre-Bid Site Meeting #2 ( Mandatory for Bidders to attend at least 1 of the 2 Pre-Bid Meetings):

August 6, 2026, 1:00pm

Question Submission Deadline:

August 11, 2026, 5:00pm

Bid Open Date:

August 19, 2026, 2:00pm

Commodity Codes

• NAICS 238160Roofing Contractors

* Disclaimer: Government BidHub provides information on bids, RFPs (Requests for Proposals), and RFQs (Requests for Qualifications) solely for convenience and informational purposes. This site is not an official public notice board. For official details, responses, or inquiries, please contact the relevant government agency directly.