Bidding Documents include the Advertisement or Invitation for Bids, Instructions to. With our free, simple Proposal Template, outline your qualifications and the cost estimate for a freelance job you're bidding on.Craft persuasive bid proposals for construction projects with this comprehensive guide. Explore key components, from project overview to pricing details. Lithos Engineering (Lithos) is pleased to have the opportunity to provide this proposal to Ardurra for the. 1.2 Proposals are to include the information requested in the Response Format document listed under Bid Attachments in the sequence and format prescribed.