The construction industry uses three distinct terms to offer their services to customers. Estimates, bids and proposals are terms used to present a dollar value associated with construction work. For the less sophisticated contractors, the terms are interchangeable. The reality is far different. Each term has an historical context and legal meaning. Thus, it is prudent for any contractor to understand the differences and use the correct term when offering their respective services. This article will explain and elaborate the differences between estimates, bids and proposals. In addition, some legal issues are explained; specifically, as they relate to contact law. As a contractor, it is your responsibility to understand the respective terms and when and how to use them. This knowledge greatly reduces your risks, especially risks associated with lawsuits.