The Multiple Listing Service or mostly known as MLS is an exclusive listing database that helps real estate agents browse for available homes for sale, find buyers, or get property data. It’s a powerful tool created, managed, and operated by REALTORS® to make efficient home-selling and buying. To access the local MLS, you have to be a licensed real estate agent who needs to pay a membership fee. With a Flat Fee MLS service, you typically pay to gain access to the MLS without having to rely on an agent to help market your home, negotiate deals, or assist with the contracts. Most For Sale By Owners choose a Flat Fee MLS option to pay a separate fee—usually an agreed price—to list their homes on the local MLS.