The City's current and past bids, including all bid documents, questions and answers, addenda, and final results, are available on Biddingo. Craft persuasive bid proposals for construction projects with this comprehensive guide.Explore key components, from project overview to pricing details. The Bidder has submitted with this Bid Proposal the following: (a) Bid Security; (b) Proposed Subcontractors Form; (c) Non-Collusion. Certain construction specifically described as follows, for which Proposals are to be opened at.