View the forms library. Get a comprehensive understanding of Pennsylvania real estate purchase and sale agreements with our indepth overview and free template.A For Sale By Owner contract Pennsylvania must include: 1. The Purchase Price, 2. The Standard Agreement for the Sale of Real Estate is the primary contract used in Philadelphia real estate. Learn more in our latest guide. Everything you need to know to represent your seller! A sales contingency is when you will need to sell your current home in order to close on the house you're offering to buy. In this article, we discuss how to write a business proposal letter and we offer sample letters and templates you can use as a guide. The Agreement of Sale for Commercial Real Estate should be used to outline the terms of the agreement when selling or purchasing a commercial property.