Central West Headquarters Re-Roof

The City of Seattle Department of Finance & Administrative Services is requesting sealed bids for a complete re-roofing of the Central West Headquarters facility at 1403 W Howe Street, Seattle, with bids due August 19, 2026, and mandatory pre-bid site inspections scheduled for August 5 and 6 at 11:00 a.m. The project carries a mandatory Women and Minority Business Inclusion Plan requirement; all bidders must score a minimum of 10 points across Aspirational WMBE Goals (maximum 6 points), Business Support Strategies (maximum 4 points), and WMBE Guarantees (maximum 6 points), with a past performance WMBE utilization rate benchmark of 20 percent for roofing projects.

The scope includes removal and disposal of existing built-up roof membrane to tongue-and-groove wood decking at the high roof and barrel vault, and to plywood deck at the low roof; removal of corrugated metal siding at gable ends; installation of tapered polyisocyanurate insulation and coverboard with mechanical fastening of the first layer and full adherence of subsequent layers; installation of new EPDM roof membrane at flat roofs and standing seam metal roofing at vaulted sections with underlayment; parapet height raising; new sheet metal flashings and coping; and safety rails and ladders. Bid Additive No. 1 includes installation of 5/8-inch plywood roof diaphragm for structural upgrades.

The engineer's estimate for the base scope is $581,072.00, with Additive No. 1 estimated at $137,616.00. State sales tax of 10.55% applies to the awarded price. The contract is a lump sum award funded through the Seattle Park District Fund. The apparent low bidder must demonstrate work experience on at least five projects within the last seven years involving EPDM membrane and metal roofing installations with a minimum 16,000 square feet per project, including at least one on an occupied facility. Substantial Completion is required within 230 working days of Notice to Proceed, with Physical Completion within 270 working days; liquidated damages are $1,000 per working day for failure to achieve Substantial Completion. A 5% bid guaranty is required. Contractor questions are due August 11, 2026. Washington State contractor registration, prevailing wage compliance per Chapter 39.12 RCW, and paid sick and safe time requirements under SMC 14.16 apply.