Robyn Diament

Robyn Diament is a seasoned real estate professional with nearly two decades of experience specializing in luxury residential sales across New York City and the Hamptons. A native New Yorker, she brings a deep, intuitive understanding of both markets shaped by over four decades living between the city and the East End. 

Known for her highly personalized and discreet approach, Robyn represents a select group of clients and brings both strategic insight and meticulous execution to every transaction. She is exceptionally hands-on—anticipating challenges, navigating complexity, and ensuring every detail is thoughtfully managed from start to finish. 

Her business is built on long-standing relationships, repeat clients, and referrals, reflecting her ability to listen carefully, advise thoughtfully, and deliver results aligned with her clients’ goals. 

Beyond brokerage, Robyn brings meaningful personal experience as both an investor and developer, having bought, sold, and renovated multiple properties across New York City and the Hamptons. Her understanding of construction, design, and value creation allows her to position properties with a distinct strategic advantage. 

Prior to real estate, Robyn spent over a decade in arbitration and mediation, where she skillfully brought hundreds of adverse parties together. That experience shapes her ability to manage complex transactions, navigate competing interests, and negotiate effectively with discretion and control. Her broader professional background, including experience in mortgage finance and commercial real estate, adds a deeper understanding of valuation, underwriting, and the investment side of transactions. 

Backed by the global platform of Brown Harris Stevens, Robyn pairs a highly personalized approach with the reach and resources of one of the industry’s most established luxury firms. Through an award-winning in-house marketing team, targeted digital strategy, and international affiliations, each property is positioned with precision—ensuring it reaches a highly qualified audience while maintaining the highest level of presentation and discretion.  

Robyn approaches pricing and positioning with discipline and intent, ensuring each property is aligned with the market while creating the conditions to drive strong interest and successful outcomes.