The people behind the name.
David and Carol Castle lead a five-person team serving New York City and Long Island with Keller Williams Realty.
David Castle
David is a licensed real estate salesperson and co-founder of The Castle Team. His background spans construction and mining — experience that gives him a practical eye for property condition, renovation potential, and the questions worth asking during a purchase.
That perspective shapes how he evaluates properties for buyers and how he prepares and presents homes for sellers. He approaches each transaction with diligence and a focus on the details that affect value and negotiability.
David is not a licensed home inspector and does not replace one. A professional inspection is always recommended as part of a buyer's due diligence.
Carol Castle
Carol is co-founder of The Castle Team and has been serving New York real estate clients since 2010. She works alongside David across the team's New York City and Long Island transactions, helping coordinate the client experience, marketing, and transaction process from start to close.
Together, David and Carol bring a balanced, team-based approach to every transaction — combining a practical eye for property with attentive communication and follow-through.
Licensed salespeople and client support, working every transaction.
Trey is a buyer specialist with The Castle Team at Keller Williams Realty Greater Nassau. With a background in investment banking, accounting, and firsthand experience as a landlord and homeowner, he helps buyers evaluate properties, understand the numbers, negotiate strategically, and make confident real estate decisions across New York City and Long Island.
Matthew brings a leadership-driven, analytical approach to real estate, with experience in operations, financial analysis, and team execution. A New York native with deep familiarity across Long Island and the five boroughs, he helps buyers and sellers navigate transactions with clear communication, strategic planning, and a focus on long-term relationships.
Kenneth oversees the day-to-day operations behind The Castle Team, helping keep systems, marketing, client workflows, technology, and transactions organized and moving efficiently. He supports the team across New York City and Long Island with a focus on process, communication, and making sure the client experience runs smoothly from behind the scenes.
Whatever Your Next Move Is, Start With a Conversation.
Buyer, seller, investor, landlord, or tenant — the right first step is a conversation. Tell us where you are and where you want to go.