I have offered consumers the option to Self list in the Realtors Multiple Listing Service for the last 20 years. Flat Fee MLS Listing Phoenix Arizona.You can list your property on the MLS without a REALTOR using any of these two approaches. Going forward a BRA must be filled out prior to showing or touring a property with a buyer. 2. List your home with our Flat Fee MLS service in Arizona. AZ Flat Fee is an Arizona based REALTOR company. Using the Zillow For Sale By Owner (FSBO) option, you can list your home for sale without an agent. We'll look at some of the flat fee MLS companies available to Phoenix home sellers, highlighting their fee structures and the various services they offer. List your home with our Flat Fee MLS service in Arizona. If you are looking for homes listed for sale with a broker in the Greater Phoenix or Scottsdale, AZ areas please visit our homepage to kick start your search.