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. Require the Contractor to complete the following before it begins working under the Contract: -. All required certificates and documents, including insurance. Reasonable care is given in gathering, compiling and furnishing the information contained herein which is obtained from sources believed to be. The City's current and past bids, including all bid documents, questions and answers, addenda, and final results, are available on Biddingo.