Our Proven Processes and Experience
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YOUR GOALS
Rosanne D'Agostino has been a full-time real estate agent for 10 years, and has over $60 million in sales. Her business is more than 80% referrals from satisfied clients who send their friends and family her way. She values her clients and promises to serve them with honesty, integrity, thoughtfulness and care. A graduate of St. Joseph's College with a Social Science degree, she also has had many years of experience in a creative marketing position.
Rosanne has the ability to offer her seller clients the competitive advantage that is required in today's market. She has also demonstrated a strong record of successfully guiding her buyer clients - including first-time homebuyers, down the path to homeownership. In a market where getting an offer accepted has been challenging, Rosanne has been able to guide her clients toward their goals of winning the home.
Rosanne knows Long Island well, and has serviced home buyers and sellers from Nassau to the two forks. She is licensed in both the East Setauket and Westhampton Beach offices. She recognizes and values the trust her clients place in her, and strives every day to exceed their expectations.
Featured Properties
Recent Sales




Rosanne helped us with the sale of our home. She is a true professional in every sense of the word. I could tell she loves what she does by the way she represented herself and the many ways in which she advertised our home. She was a pleasure to work with. She prepared us for the process and made us feel at ease. She kept us well informed during the process and made …
-MPlanas, Client
Rosanne sold our house in Coram. She was very professional, the promotion of the property was done in a highly professional manner. This lead to over 100 people coming to the open house ending up with numerous offers. In the end we ended up selling the home for higher than the listed price. I would not hesitate to recommend her again.
-JPerrone, Client
Rosanne is the most professional and personable realtor I have ever worked with. She was knowledgeable, patient, and so caring about all of our wants and needs in both selling and buying our homes. She is also the only other person in the world besides myself that answers messages at the drop of a hat. Promptness in responding is so important to me and Rosanne always …
-Koberm06, Client
Rosanne is an extremely professional and honest real estate agent. We are the first time buyer and have a lot of confusions during the entire home buyer process. Although Rosanne is the listing agent, she is very helpful and responsive to us. She does care for both seller and buyer's need. Rosanne patiently guided and advised us during the whole process, so we won't feel …
-L Geng, Client
Rosanne was very devoted to helping us in the selling of our home. She communicated with us often. She was very caring.
-Margaret H., Client

Rosanne D'Agostino is a full time Associate Real Estate Broker, and is licensed in both the East Setauket and Westhampton Beach offices of Douglas Elliman. She is dedicated to providing her clients with first class, five star service.
Whether you're a first-time home buyer in search of your dream home, a seller looking to downsize or an investor looking for a great opportunity, working with a dedicated real estate professional can make all the difference.
She delivers unmatched customer service, and her genuine desire to see your property goals come true makes her the go-to resource for all your real estate needs. For sellers, Rosanne takes full advantage of her marketing skills to ensure that your property is broadly promoted on a variety of channels, including major real estate websites, print and social media. Her negotiation skills are second to none. For buyers, she effectively analyzes the local market and target trends to help you find the perfect home at the right price.
If you're looking for a positive, helpful partner who is ready to provide you with exceptional service, let's talk today!