1. Identify the buyer and seller in the agreement. In the state of Texas, you can wholesale properties using the TREC 1-4 Contract.Here is a video sharing what I have done before. A purchase agreement between wholesaler and the seller. My ultimate purchase and sale agreement designed exclusively for wholesalers and break it down for you. Edit, sign, and share wholesale purchase agreement contract pdf online. No need to install software, just go to DocHub, and sign up instantly and for free. Complete, sign, and return this form to the Personal Property Division, Bexar. Appraisal District, PO Box 839946, San Antonio, TX 78283-3946. City shall refer to the City of Universal City, Bexar County, Texas a home rule city.