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.
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Recent Sales




Rosanne D’Agostino is an amazing realtor who genuinely cares about her clients. On day one, Rosanne came well prepared with details about how we were going to proceed with the sale of our home. She lead us step by step through the process and hurdles we needed to overcome through the selling process. Selling a home can be stressful and worrisome, but not when Rosanne is …
-BJames, Client
Roseanne is a fantastic real estate agent! She was with us every step of the way in both buying our new house and selling our old one. VERY responsive and always up for answering our questions, no matter how small. If a potential issue arose, she was knowledgeable, and very quick with suggestions on how to resolve it. Our house is selling for WELL OVER asking price, and …
-JYule, Client
The "Chuck Norris" of real estate! Rosanne was a complete professional throughout my entire home buying process. She was flexible with my busy schedule, always knowledgeable and very responsive to my many questions and concerns. Home buying (especially first time) is an exciting process but also stressful. Rosanne's calm, professional demeanor took away all the stress …
-BSully16, Client
A real estate agent who became a true friend along the way during the selling of our home. A true professional who worked tirelessly for 3 months during the closing on our home. I can't believe there is a more sincere dedicated agent that Rosanne. I can't thank her enough and now I am so proud to call her a good friend.
-MScofieldchow, Client
It took us a long time to find the right home - viewed a lot of houses, but Rosanne always showed up with a smile and helped guide us through the home buying process.
-HSBakr, 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!