Siding, Windows, Sliding Doors & Flat Roof Replacement on Bldg. 10 at Sandpiper East

King County Housing Authority (KCHA) is requesting sealed bids for siding, windows, sliding doors, and flat roof replacement on Building 10 at Sandpiper East Apartments in Bellevue, Washington, with bids due September 3, 2026 at 11:00 a.m. and a mandatory pre-bid conference on August 18, 2026 at 11:00 a.m. at the project site.

Bidders must hold current Washington contractor registration for the preceding three years under the same business name and complete L&I training. Work includes removal and replacement of existing siding, windows, and sliding glass doors; flat roof membrane installation; rigid insulation (1 inch above grade, 2 inches below grade); new privacy fencing at ground floor unit patios; bathroom and kitchen exhaust vent replacements; foundation waterproofing and drainage improvements; and removal of asbestos-containing materials as required. The scope also encompasses unit-price line items for wall sheathing replacement, insulation removal, mold treatment, window and door liner repairs, and lighting fixture replacements, plus allowances totaling $15,000 for wall framing repairs due to moisture damage or decay. Three alternates are available: excavation and waterproofing on the north and west sides, drainage line installation on the east side, and roof hatch installation. All work must be completed within 90 calendar days from the Notice to Proceed, with liquidated damages of $250 per day assessed for delays.

The contractor must maintain the building in weathertight condition throughout construction while accommodating resident occupancy and emergency vehicle access. A 5 percent bid guarantee payable to KCHA is required, along with performance and payment bonds for 100 percent of the contract award amount. Contractors must comply with Washington State prevailing wage requirements and maintain current workers' compensation insurance, UBI numbers, and employment security department numbers. A two-year workmanship warranty and manufacturer's warranties are required, including a 50-year limited siding warranty and 40-year roofing warranty.