Here's a step-by-step on creating a business purchase agreement with a free business purchase agreement template. A Pennsylvania residential purchase agreement establishes a legal arrangement between a buyer and a seller in a real estate transaction.View the forms library. Learn about forming and registering your business online, and how to complete other types of business filings. Register your business (opens in a new tab). Use a Business Bill of Sale to set out the terms for the sale of a business and transfer the ownership and all assets to the buyer. Find useful forms for property assessments, real estate property and deeds, Military Discharge (DD214) requests, and more.