Attachment C1200: Bid Submittal Forms. 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.Review competitive sealed bids from the various contractors and make recommendations to the City. These free, customizable tools can help you quickly create professional construction bids, increasing your chances of winning the project. Important: The calendar in Figure 1 is for example purposes only and represents a straightforward bid.