To file invoices for all DEP contracts, vendors must use the DEP Invoice Platform. Vendors will need to create an account upon initially accessing the platform.Create a bidding system to develop neat, organized bids that owners can easily understand. Download this free bid proposal template for Word to outline how the contractor intends to fulfill the project requirements. 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. In this video we'll discuss how to write a professional looking construction proposal that is more than a single page document.