Marilyn Flanagan

Marilyn Flanagan, a lifetime resident of Miller Place, comes from an extensive background of service in her family’s retail business. Her passion for animal rescue, knowledge and commitment, especially as a competitive equestrian, drives Marilyn to go the extra mile in everything she does.

In 2015 Marilyn partnered with Peter Castelli to form Your EXIT Home Team at EXIT Realty Achieve. Together Marilyn and Peter share their lifelong dedication to customer service as well as over 15 years experience in real estate. Integrity, expertise and knowledge of Long Island Real Estate is brought to everyone they have the privilege of serving.

Marilyn and Peter’s goal is to always exceed the expectations of those they serve. They understand that buying or selling a home is one of the most important things a person will do in their lifetime. They take this very seriously and strive every day to make this process as stress free as possible. Marilyn’s extraordinary sense of caring and knowledge of real estate is evident when she is guiding buyers and sellers through the process.


Marilyn and Peter are both Licensed Real Estate Salespersons and are members of the Long Island Board of Realtors as well as the National Association of Realtors and the New York State Association of Realtors. They both regularly attend training and education courses to keep them ahead of the curve when it comes to serving their clients and customers.