What is the Multiple Listing Service (MLS)?

The MLS is like a huge property warehouse. Brokers selling real estate in Chicago, Illinois and the suburbs of Chicago have come together to input all of their office listings into one spot so as to easier facilitate the sale of Illinois real estate. This database can only be accessed in total by members of the MLS. Limited access to the MLS is allowed by the general public at various websites like Realtor.com®.