A bid bond is a type of surety bond that guarantees a contractor will honor their bid and enter into a contract if awarded a project. Commonly required on public works and commercial construction projects, bid bonds help protect project owners from financial loss if a contractor backs out after winning a bid. This guide explains how bid bonds work, who needs them, how much they cost, and how contractors can qualify.

Creating a winning construction bid requires more than offering the lowest price. Contractors must accurately estimate labor, materials, overhead, equipment costs, and profit margins while presenting a professional proposal. This guide explains how to prepare competitive construction bids, avoid costly mistakes, understand bid bond requirements, and improve your chances of winning residential, commercial, and government projects.