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. Proposers are strongly encouraged to make their submissions well in advance of the proposal due date as the process may take some time to complete.What is a construction proposal? What to include in a construction proposal. MnDOT will use a two-phase procurement process to select a design-build contractor to deliver the Project. Customize Buildertrend's pre-designed templates to create professional proposals. Instantly draft and send a business proposal template to establish the terms and conditions between your business and clients.