The Standard Agreement for the Sale of Vacant Land (Form ASVL) is the contract for the sale of unimproved real estate containing commonly used clauses. What is a Pennsylvania Real Estate Contract?A purchase agreement (PA) is a written agreement between a buyer and seller to purchase and sell real estate. A land sales agreement is a legal contract between a seller and a buyer that is used to purchase real estate and outline the terms of the transaction. 1. Sale and Purchase. 1. Sale and Purchase. The standard agreement specifies details of the property including purchase price, buyer's responsibilities and much more. Partition Sale – Private or Public. Before you determine your MAO, let's look at how to lock in that property. The Employer shall inform new, transferred, promoted or demoted employees in the bargaining unit that the Union is the exclusive representative.