1. Identify the buyer and seller in the agreement. Unless you are dealing with commercial, TREC 14 works perfectly well.You must pay the seller money for the option. 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. 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. Watch this video to learn how to confidently fill out real estate contracts and secure your deal. This legal agreement transfers your rights in the original purchase contract to the buyer and outlines the assignment fee. The Ultimate Investor Program offers guidance and strategies to maximize investment potential.