In 1981, the first Phyllis' Giant Burgers in Marin was successfully established by Phyllis Larson. Located on Miracle Miles, San Rafael, the building still stands today under the same name although the business is run by James and Michelle Cho. Phyllis' has been in business for almost 26 years and many more years to come.

Known to have the "Best Burgers in Marin," Phyllis' has won many awards in the past and has been in the news a few times, most of the awards from Pacific Sun and the San Francisco Chronicles for Best Burger. With over 20 kinds of burgers to choose from, the Giant Cheese and Bacon Burger is the most popular of all. The name says it all, the burgers there are delicious and pretty big. Not only do they make burgers though, they also sell corn dogs, chicken, hot dogs, and salads, which have all recently been added to the menu.

In April of 2006, another Phyllis' was opened in the Novato Fair Shopping Center near Safeway, and is a lot bigger than the Phyllis' located on Miracle Miles. It has 5 plasma screen TV's and even has outdoor seating for the people who enjoy eating outside. The Phyllis' in Novato also has Dreyer's ice cream in a variety of flavors, as well as soft serve ice cream.

Santa Rosa Location has open on April 13, 2007