Explore FSBO transaction services in Pennsylvania with Pennsylvania Land Titles, guiding you from start to finish for a smooth sale. A Pennsylvania residential purchase agreement establishes a legal arrangement between a buyer and a seller in a real estate transaction.A For Sale By Owner contract Pennsylvania must include: 1. The Purchase Price, 2. Find useful forms for property assessments, real estate property and deeds, Military Discharge (DD214) requests, and more. View the forms library. When selling real estate in Allegheny County, PA, there are many issues that must be addressed on time as well as specialized paperwork required in some areas. Some examples of documents you may need to sell your home are: Property survey: This is a legal document that shows the buyer the boundaries of your property.