Hi Carolyn,
Congrats on getting your first house under contract!
I asked Greg Wilson this same question and he referred me to his mother, Dean Wilson, a VP at Republic Title, to find out what is required to legally assign my interests in a contract to another individual.
Dean said that the only thing that's required is a written statement signed by you and your assignee stating that you are transferring "all rights, title and interest" in the property and contract to them. She said it could be hand-written and it would still be legal as long as it was generally legible. The "rights, title and interest" wording is key.
She advised that the document also be dated and note whether you've received compensation or will receive it at closing. (That's so the title company knows if they need to disburse funds to you at closing.)
For heaven's sake, don't shell out $199 for wording someone else made up following the above guidelines. They're probably no better than the words you'd come up with yourself following the above guidelines. Or copy someone else's free form as long as it follows the above guidelines.
Or contact Dean. Text me at the number below if you want her contact information.
There's no state-mandated or even state-recommended form. If there was, it'd be on the TREC web site.
Congrats again on your first contract! If your prospective buyer isn't interested, let me know. I might do the deal with you.
Best regards,
David Weiss.
817-500-8412
Disclaimer: I ain't a lawyer. The above ain't legal advice. I'm just relaying what a title company told me. I like to think they might know what they're talking about when it comes to real estate contracts. Use at your own risk.