Bids are invited on the basis of a Single Prime Contract. Craft persuasive bid proposals for construction projects with this comprehensive guide.Explore key components, from project overview to pricing details. Bid Document Preparation. Discover what a bid proposal is, the elements of a bid proposal, how to create one and a template and example that can guide you. The requirements for submitting a Proposal are stated in the attached Request for Proposals (the "RFP"). Please review them carefully. Alliance Health is seeking a Vendor to provide the build out of low voltage structured cabling to support.