This guide sets out the basics of purchasing and bidding to help you comply with state law, no matter your government type, size or complexity. This page provides a general overview of the public works bidding and award procedures for local governments in Washington State.3.40.005 Competitive bidding – General. Washington State law governs competitive bidding requirements for public works. Discover Washington RFP opportunities with Bid Banana. Learn how to secure government contracts and grow your business in the Evergreen State.