To search by multiple listing service or MLS number, visit websites such as Realtor.com, insert the MLS number, and search and select a property of your preference, notes the San Francisco Chronicle. The MLS number is often found in marketing flyers or advertisements. Record the MLS number for reference purposes.
At the top of the website's home page and underneath the search box, click on Search by MLS, and key in the MLS number, states the San Francisco Chronicle. Clink the link Search to show all current listings that have the same MLS number. Starting with location, choose a house that best suits you, and click on the property's link to check its full description.