Window Washing Services

The Seattle Convention Center seeks a qualified contractor to provide comprehensive window‑washing services for its Arch and Summit buildings, covering interior and exterior glass, skylights, elevator glass, railings, canopies, and related components. The scope includes regular weekly, monthly, quarterly, semi‑annual, and annual cleaning tasks, a dedicated on‑site manager (40 h/week), safety‑program documentation, and compliance with Washington prevailing‑wage requirements. The contract will run for five years starting 1 Jan 2027, with optional one‑year extensions up to a total of ten years. Proposals must be submitted by 13 Oct 2026, following a mandatory pre‑bid conference on 28 Sep 2026. Evaluation will weigh technical, management, and cost criteria, with a potential interview phase. • Full‑service window cleaning (interior & exterior) for large convention‑center facilities. • Mandatory pre‑bid conference and a 60‑day firm‑offer period. • Base contract term 5 years (possible extensions to 10 years). • Required compliance with Washington State prevailing‑wage and insurance mandates.