Our Proven Processes and Experience
____________
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 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 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
...We got sound advice for upgrades and when we had trouble securing people/folks not showing up for jobs she not only helped us get reliable people but also never pushed us to list quicker than we were ready. We absolutely love our house and she knows it...
-S Denise, 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
We had been dancing around selling our home for years and reached out to Rosanne many times. She never hesitated once to answer our questions or concerns. We finally decided to list on March 26, 2023 and within three days our house sold over asking price. Rosanne made the whole process seamless from listing, open house and closing. We are grateful for her help, …
-Candice K, 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!