Build your home with a construction loan from Fulton Mortgage Company. After construction the loan will automatically convert into a fixed-rate loan.Some builders ask you to sign a purchase contract before you go to the design center and select your flooring, cabinetry and the like. Steps to Write an Offer. Once you find a property you want to buy, and draft your purchase offer, consider these things that could convince a seller to accept. This guide is developed as a tool to assist you, the home buyer, in your selection of a new home builder. We hope it will make the process pleasant and simple. When it comes to filling out a real estate purchase agreement, several key players are involved: buyers, sellers, real estate agents, and attorneys. I'm gonna break down all the terms and conditions so you can understand what it means and we're gonna fill that out so you can have a real-life example of it.