The Standard Agreement for the Sale of Real Estate should be used in transactions to outline the terms of the agreement between the buyer and seller. Get a comprehensive understanding of Pennsylvania real estate purchase and sale agreements with our indepth overview and free template.Standard Agreement for the Sale of Real Estate. This form recommended and approved for, but not restricted to use by, the members of the Pennsylvania Association of REALTORS® (PAR). PARTIES. BUYER(S):. A For Sale By Owner contract Pennsylvania must include: 1. The Purchase Price, 2.