View the forms library. Send a For Sale By Owner prospecting letter to neighbors in 3 simple steps.Learn how to generate leads for your FSBO campaign. Get a comprehensive understanding of Pennsylvania real estate purchase and sale agreements with our indepth overview and free template. Letters of intent can take many forms. Pennsylvania Free Letter of Intent ( LOI ) Template. Utilize our Letter of Intent to formally express your desire to buy a product or service. 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. Most properties sold in the commonwealth of PA are required to have a completed and signed Seller's Disclosure. View a sample Seller's Property Disclosure.