After you have selected your builder, you will enter into an agreement to purchase a home in the form of a contract. MODEL: Seller agrees to complete upon the Property as defined below a dwelling known as model.Find Out The Steps For Buying A New Construction Home in Maryland. This is a Legally Binding Contract; If Not Understood, Seek Competent Legal Advice. Many of the steps in purchasing a new construction home are similar to purchasing a resale, such as signing a contract and securing a loan. Get a comprehensive understanding of Maryland real estate purchase and sale agreements with our indepth overview and free template. This video provides a step-by-step guide on how to fill out Maryland's Residential Contract of Sale form.