Use a construction proposal template to automate the creation of contracts and make sure you never put the wrong name or figure in a proposal again. A construction proposal is a document used to provide a client with a clear understanding of a project's details.Use of proper bid form. The undersigned, as bidder, proposes and agrees if this bid is accepted to contract with the State of. This is how I create epic proposals with a custom client portal through your website with a downloadable contract and it's epic. Bids will be received for a Single Prime Contract. All proposals shall be lump sum.