A One Time Showing Agreement is a commission agreement signed between a buyer's agent and a seller for specific named buyers. A OneTime Showing Agreement form is a legally binding agreement between the buyer's broker and the homeowner listing the property for sale.The listing agreement is a contract that lays out specific, agreedupon terms, giving the real estate agent permission to market a home to buyers. This is a legally binding document, if not fully understood, consult legal advice before signing. The Real Property Department records documents pertaining to real property or real estate in Harris County. Q. What is the last day that I can pay my property tax bill without penalty and interest? All listing procedures and legal documents are accessible in your client admin account. 4. Fill out the documents, upload photos, and provide a description. If you have Medicare, you must fill out a Medicare Asset Form and show proof of your current resources and liabilities. Do you live in Harris County?