Learn how to properly fill out all of the residential listing contract documents and everything associated with it. A Commission Agreement for Sale is used for one-time showings of real estate so a Realtor can show a home to a prospective buyer and be paid a commission.Edit, sign, and share one time showing agreement texas online. No need to install software, just go to DocHub, and sign up instantly and for free. Is it illegal or unethical for an agent to present two offers to the seller at the same time? Learn how to fill out a listing agreement properly for Realtors in Texas! Reach out if you need assistance. I'm being asked to complete a buyer representation agreement. Complies with paragraph 7 of many of the TREC contract forms. It is suggested to ask seller to complete the notice at the time of listing.