A construction proposal is a document used to provide a client with a clear understanding of a project's details. 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.The Awarded General Contractor will need to update all subcontractor pricing for contract execution once Construction Documents are completed. Step 1: Fill out the form. In this blog, we will teach you how to write an effective construction proposal that stands out from the competition. Fill out the information at right to download our Construction Proposal Template, free of charge. Check out our construction proposal template selection for the very best in unique or custom, handmade pieces from our templates shops.