RESIDENTIAL ONE-TIME SHOWING AGREEMENT. The Northern Virginia Association of Realtors provides a full library of free forms, which are reviewed and updated regularly, for all members.Debbie has been offering Virginia Flat Fee Real Estate Listings and FSBO Services since 1994. We make Selling Your Home for Sale less intimidating. A One Time Showing Agreement is a commission agreement signed between a buyer's agent and a seller for specific named buyers. To add your real property to the MyFairfax portal, you need the property's Tax Map Reference Number and the Web Control Number. This Agreement of Purchase and Sale (this "Agreement") is made as of this ___ day of. Once you find a property you'd like to see fill out the form and a Weichert Associate will contact you. Complete listing of state and local associations, MLSs, members, and more. The housing market in Fairfax is expected to remain strong in the coming months, making it an ideal time to list your property.