Marianne Conroy

Licensed Real Estate Salesperson


Marianne Conroy is a dedicated Licensed Real Estate Agent with special designation as Certified Buyer Representative (CBR) She and her family have lived on the North Shore of Long Island for over 30 years. Her familiarity and undeniable expertise is what makes buyers and sellers keen on trusting her from list to close. Marianne is a member of the Long Island Board of Realtors (LIBOR) and National Association of Realtors (NAR). Prior to the real estate world, Marianne was a trading/research analyst on the Institutional Block Trading Desk at Lehman Brothers.

Marianne and her husband Anthony reside in Muttontown, where they raised five children, three boys and two girls. She enjoys playing tennis, golf and snowboarding. She holds a Bachelor of Science degree in Computer Science from St. John’s University and is a graduate of the New York Real Estate Institute.

Every real estate transaction is new and different. Continuous hard work and the ability to adapt to change is essential to successfully meet a clients needs. Combining her background in finance, exceptional negotiating skills, work ethic, and extensive market knowledge, Marianne Conroy is 100% dedicated to helping you sell your property or find that one place you can call home, all while feeling at ease with the entire process. Feel free to contact her with any of your realty inquiries!

Profile Details

Certified Buyer Representative®

Service Areas

Oyster Bay, Oyster Bay Cove, Upper Brookville, Brookville, Old Brookville, Glen Head, Locust Valley, Lattingtown, Matinecock, Muttontown, Laurel Hollow, Syosset, Jericho, Roslyn, Old Westbury, Cold Spring Harbor, Huntington. Long Island.

Additional Resources


My wife and I will always be grateful to Marianne for her above-and-beyond commitment and excellent work in selling our house (and helping us buy a new one). She was ultra-responsive, typically responding within minutes, even if she was out to dinner. I trusted her completely to negotiate prices for both our sale and our purchase, and the results were outstanding. I would also give her five stars for her skills as a therapist, as she was always willing to talk my wife and I through the more stressful parts of the real estate process.

Dave Long

I have already recommended Marianne and would do so again. She worked tirelessly for us with showings and open houses all week and every weekend that we were willing. She was aggressive in pricing from the get-go, much more so than the other agents we met with, and was even stronger in negotiating a sale price that we were satisfied with. She kept us informed at every step of the process and was extremely responsive via calls, texts and emails-- always within the hour. Also impressive was the way she set up the home for a huge amount of foot traffic from the beginning with fantastic pictures and marketing. We decided to sell our home when our baby was just a month old, which could have been a nightmare. Instead we were moving into our new house with the old house sold and gone before he was crawling

Denise Napoli

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