The Harkov Lewis Team
Few. Focused. Fully invested in your outcome.
Ari Harkov
Founder · Licensed Associate Real Estate Broker
License #10301220134
One of New York City’s elite power brokers, Ari is known as one of the preeminent experts in the residential real estate market in NYC and offers his clients exceptional negotiation skills, market knowledge, customer service, and sophisticated pricing and valuation expertise. He has built and led the Harkov Lewis Team to its position amongst the top teams in NYC and in the United States and oversees all operations of the team. Ari began his career as one of the fastest rising agents ever seen in the industry and was awarded the coveted Rookie of the Year award by the Real Estate Board of New York and named by Crain’s as one of the top five residential brokers to watch under the age of 30 in New York City. He is now firmly established as one of the leaders in the industry and regularly sought after by developers and large institutions as well as past clients and their referrals. Frequently quoted in the press and a regular participant on industry panels, Ari holds an MBA with honors from Columbia University and a BA with honors from Vassar College.
Warner Lewis
Founder · Licensed Associate Real Estate Broker
License #30LE1035095
Warner Lewis is a highly acclaimed real estate professional at Brown Harris Stevens in New York City. With a long list of accolades and accomplishments throughout his career, he has become a renowned figure in the industry. As a recipient of the prestigious Producer’s Council, Sapphire Club, and Gold and Silver Circles from Halstead, Warner provides his clients with a level of personal attention and customer service that is unparalleled. Having grown up in New York City, Warner has an intimate knowledge of the Manhattan and Brooklyn real estate markets, and his extensive expertise and market knowledge are invaluable to his clients. He has built his business almost exclusively on referrals, a testament to his outstanding reputation and the trust he has earned from his satisfied clients. Warner’s commitment to his clients is unwavering, and he is known for his professionalism, integrity, and attention to detail. He is dedicated to helping his clients achieve their real estate goals and providing them with a stress-free and enjoyable experience. With his exceptional track record and expertise, Warner is undoubtedly one of the most respected and sought-after real estate professionals in the business.
Kaitlin Tsai
Licensed Real Estate Salesperson
License #10401397593
Kaitlin Tsai brings a global perspective and an analytical rigor to New York City real estate. Before joining Brown Harris Stevens and the Harkov Lewis Team, she spent five years in finance and investor relations, advising institutional clients and high-net-worth investors. That background gave her a sharp understanding of market analysis, complex negotiations, and the level of trust high-stakes decisions require - skills that translate directly to representing buyers, sellers, and renters across Manhattan. Raised in Shanghai and conversationally fluent in Mandarin, Kaitlin has lived in Boston, San Francisco, Greenwich, and New York, giving her firsthand insight into what it takes to navigate a new market and feel at home in a new city. Her experience analyzing real estate and financial markets across Asia and the U.S. gives clients a perspective that extends well beyond local comps. As a member of the Harkov Lewis Team, consistently ranked among the top teams in the nation by The Wall Street Journal and REAL Trends, Kaitlin pairs her analytical background with the team's deep market expertise and extensive network to deliver informed, strategic guidance at every stage of a transaction. Kaitlin has lived in the West Village, Hell's Kitchen, and now Gramercy. She graduated from Boston University's Questrom School of Business.
Marc Schaeffer
Licensed Associate Real Estate Broker
License #10301223672
Marc Schaeffer values customer service and honest straightforward communication above all else. Marc has 20 years of sales experience and 15 years as a licensed real estate agent working with clients ranging from first time buyers to high net worth individuals. As an owner of both a single family and investment property, and a father of a high schooler he understands the challenges of raising a family in the NYC grid. Marc holds the rank of Eagle Scout and has carried the lifelong philosophy of “Be Prepared.” His background as an actor and dancer helped him to develop strong interpersonal skills, helping him effectively read body language and ask the right questions. When he is not selling real estate, Marc loves spending time with his family and friends. He enjoys cooking/grilling, eating new cuisines, triathlons, wine, and staying active as a member at the NYAC. Marc has lived in New York for over 20 years and loves learning about the history of landmarked buildings.