Bid Bond with your Bid. Learn how to write a winning bid proposal for construction projects.In this article, we will delve into what bid proposals are, how they work and some best practices for proposing bids in the construction industry. To ensure compliance with Bid requirements, the Bidder should follow the format and content instructions in the RFP, Section IX, Proposal Format and. Content. Download this free bid proposal template for Word to outline how the contractor intends to fulfill the project requirements. Demonstrating a plan for long-term impact and scalability should be evident in the proposal. Key Considerations for a Successful Bid.