All Prospective Vendors submitting a bid must be subscribed to this bid on the City's bidding website prior to the bid opening. Craft persuasive bid proposals for construction projects with this comprehensive guide.Explore key components, from project overview to pricing details. All Prospective Vendors submitting a proposal must be subscribed to this RFP on the City's bidding website prior to the due date and time. Discover what a bid proposal is, the elements of a bid proposal, how to create one and a template and example that can guide you.