Bidding is the formal and competitive procurement procedure through which offers for construction are requested, received, and evaluated. A Request for Proposals (RFP) is a method of soliciting competitive proposals for a defined scope of work.This page provides a general overview of the public works bidding and award procedures for local governments in Washington State. These are for formal government contracts that the state is trying to fill. These solicitations come from government agencies and organizations. The purpose of an invitation to bid is to provide standardized information to all bidders, fostering a truly competitive process. Potential bidders who intend to submit a bid may download the complete bidding documents for a fee. C. Filling Out City Bid Forms. Request for Proposals (RFP); Other available solicitation methods. Requests for Proposals - A Request for Proposals (RFP) is a method of soliciting competitive proposals for a defined scope of work.