Mark Leventhal

Founding Agent - Compass Long Island

2024 - Ranked top 1.5% of Real Estate Professionals by "Real Trends Verified"

Partnering with Mark Leventhal to buy or sell your home on the Long Island North Shore is a refreshing, rewarding experience. The honesty, integrity, professionalism and hard work he brings to every client and every deal add up to a proven track record of results, which has set him apart in his field.

Recognized for his excellence, Mark ranked as the #2 Agent in the Manhasset office at his prior brokerage firm in 2019, 2018, and 2017, and in the Top 10 for Long Island in 2019 and 2018. He is a Licensed Associate Real Estate Broker representing buyers and sellers in luxury real estate from Long Island to New York City, focused on achieving his clients’ unique goals. Mark also holds the Certified Buyers Representative (CBR) designation. He exceeds expectations as a listing agent and buyer’s agent, handling relocation, condos, gated communities, and single-family homes throughout the desirable North Shore.

A North Shore Gold coast native and lifelong resident, Mark currently lives in Manhasset with his wife. He is very knowledgeable of homes in the area, and is an expert negotiator who can get the deal done. His seasoned background as an entrepreneur and business owner in the financial industry for over 25 years affords him a distinct advantage when working with clients and helping them navigating complex transactions.

Mark has not only perfected his craft but won the loyalty of his clientele. His rave reviews say it all. As one happy client put it: “I’ve bought and sold 4 homes over the years and Mark was by far the most attentive, hardworking agent I’ve ever had. His level of personal consultation in regard to selling our house was outstanding. He helped us plan out minor renovations to improve the property, worked with our contractor and HOA to make sure everything was buttoned up, and priced the home right for a quick sale. We could not be happier with the results, and with Mark!”

Want to Buy or Sell? Have questions about the market? Call Mark at 516-330-8001 for all your Real Estate solutions and answers!

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★★★★★
" "Mark was very well prepared starting with our first meeting with him, he had a plan, he executed the plan, and when we ran into issues with potential buyers getting cold feet, he went out and found new buyers, and ended up negotiating a sale at what we all agreed was the top of the market." - Jeff G.

★★★★★
"Mark is a true professional. Attentive, honest, friendly and responsive. This is our third property working with Mark and he is my go to broker. He commits from the start and thereafter. Whatever it is you need after the deal is done. He’s there for you. There’s plenty of diamonds in the rough. Mark is a polished gem! I highly recommend him to anyone!" - Laura L.

★★★★★
"Mark Leventhal is the kind of broker everyone hopes to find, but few do. He is not just incredibly knowledgeable and super smart and responsive and honest, he cares and he stays involved. He goes the extra mile not just to make a "deal" but to help with all that comes after. Need a contractor, need a plumber, need a floor person, need a lawyer, just need someone to vent to or bounce ideas off of -- Mark is your man. Want to meet for the 13th time just to measure, he will make it happen. He is such a pleasure to work with. Mark is the consummate professional and a wonderful human being." - Nancy F.

★★★★★
"I’m a widowed senior with 3 boys still living at home. My youngest, a teenager in HS! Mark didn’t only walk me thru the process to list and sell my home and help me arrange a nearby rental so my son could finish HS here, he became a trusted friend. Doesn’t get better than that! I luv the guy!!" - John C.

★★★★★
"Mark Leventhal has the qualities that make him an extremely successful and effective broker. I cannot say enough about his professionalism and knowledge within the industry. I found Mark to be a highly attentive agent, almost as if I was his only customer, although I know that was not the case. He returned all phone calls and emails the same day. I never felt neglected or unimportant. He is also highly personable with an engaging personality. " - Carrie C.
★★★★★
"Mark was responsive and thorough; his strong local knowledge was a key advantage in our process; he was able to highlight the key points of the community and advantages of our home versus the rest." - Alex

★★★★★
"Mark was instrumental in making a deal to purchase our house. He was fair, responsive, knowledgeable and friendly. It was a pleasure to work with him and he was always available, accommodating and present from beginning to end. Definitely would recommend him as a realtor." - Steve

★★★★★
"Working with Mark has been a pleasure. He's knowledgeable of the market, patient when asked questions and available when needed. Highly recommended. I wouldn't work with anyone else." - Mark

★★★★★
"Mark is very helpful and as honest as they come. He genuinely cares for his customers and goes the extra mile. Thanks Mark, we know we can count on you." - Zena

★★★★★
"Mark has provided excellent work as a real estate professional for us over the past 5 years. He has always been extremely knowledgeable about the area he serves, and has a wealth of information to share with his clients. Mark recently helped us sell a condo in only 2 days because of his deep contacts with prospective buyers. Mark has our highest recommendations as a buyers or sellers agent."

★★★★★
"Mark was extremely helpful and really listened to our needs. He was easy to work with, and, most importantly, not pushy in the least. I would highly recommend him." - Elana

★★★★★
"It was a pleasure working with Mark Leventhal. He is extremely friendly and knowledgeable. He was immediately responsive to all of my questions and provided a great deal of relevant information. He went out of his way to make the experience as easy as possible. I highly recommend him to anyone seeking an excellent real estate broker." - Ralph

★★★★★
"I would highly recommend Mark because of his knowledge and expertise of the real estate market. The entire process was stress free and I was always confident that our goal of selling my mother's condo would be accomplished . Always calm, professional, and reassuring; Mark was able to secure a great sale price through his excellent negotiating skills." - Rita

★★★★★
"Mark was a pleasure to deal. He was very helpful with the negotiations and was quick in responding to texts and emails. He was knowledgeable about homes and the area I was buying in. I found that he was trustworthy and fair in discussions we had. I would look forward to working with him again in the future."

★★★★★
"I have bought and sold 4 homes over the years and Mark was by far the most attentive and hard working agent I've ever had. His level of personal consultation in regard to selling our house was outstanding. He helped us plan out minor renovations to improve the property. He also worked with our contractor and the home owners association to make sure everything was buttoned up. Mark is very knowledgeable of the homes in the area and helped us price the property perfectly for a quick sale. We could not be happier with the results and with Mark. He is extremely friendly, responsive, professional and works hard for you. He really listened to our needs and made it happen for us. I would not hesitate in using Mark for any future real estate transactions. 5 Stars!"