“KOSL has mastered the art of designing luxurious residences that are as classic as they are inventive.”

Real estate remains one of the cornerstones of global prosperity and forward momentum. Guided by shifting market dynamics and evolving consumer needs, the industry is in constant motion—its stability often hinging on the reliability of seasoned performers. Among that scarce cohort is KOSL Building, a renowned residential development firm known for advancing industry standards through their persistent stature and quality. For decades, KOSL has been instrumental in reshaping the luxury residential landscape across New York’s Hudson Valley and Greenwich, Connecticut. Their proven track record and personalized approach have earned them a reputation as a go-to partner for refined, high-end development.

Where Strategy Meets Structure: KOSL’s Development Advantage

Location, acquisition costs, construction pricing, timing — with so many variables impacting the opportunity cost of options, and the best route is to identify a common denominator. Whether you already own a property, have plans prepared or financing secured, finding the right development partner early on is imperative. A good builder should be able to bridge any missing gaps, a great builder will ensure there are no gaps to bridge. What truly sets KOSL apart is their fully immersive, all-phases-included process—covering every element of development with precision, from site selection through finishing touches. KOSL Realty is the organization’s brokerage division through which it keeps its pulse on the market, allowing them to identify premium properties both on and off the market with deep diligence from a builder’s perspective. The firm’s advisory arm, KOSL Consulting, supports each project with curated development plans, financial structuring, and entitlement guidance — accelerating approvals while reducing friction. The company’s central construction division, KOSL Building, manages every physical and logistical component of the build, upholding a meticulous standard of quality at each step. KOSL continues to illustrate their integral role as an asset through result-oriented performance.

Turning Market Uncertainty into Measured Opportunity

When analyzing the endless array of factors influencing property development, diligence is the focal point of ensuring success. Our team at Business Honor had the chance to get acquainted with Oran Ben-Simon, the Executive Vice President of KOSL, a young professional with an impressive expertise in his area. When discussing market trends, he noted "Every period brings its own unique set of complexities, and every cycle has a new dynamic.” With a pragmatic perspective shaped by constant shifts in market demographics, property values, and economic pressure points, Oran emphasized that adaptability and foresight are key to staying ahead. Oran further elaborated about the importance of long-term thinking in an unpredictable market. “Obstacles change shape, but the principles to overcome them remain constant,” he added. From global disruptions to regulatory pivots, KOSL’s resilience lies not in reacting to market tides, but in anticipating them through accumulated insight and a proactive mindset. His unique perspective on ‘levels’, as he describes them, pertain to the ability to resolve complex situations in a practical manner through compounding knowledge and experience. Dilemmas ranging from recessions, global pandemics, zoning reforms, regulatory changes and more are merely similar obstacles with different hats where the key to resolving those impediments resides in the solutionist, rather than reliance of changing circumstances.

Luxury Built to Last, Designed to Live Well

Constructing a custom residence is one of the most personal and fulfilling investments an individual can make. Amid a sea of choices, what ultimately defines the outcome is the builder’s dedication to enduring craftsmanship and client care. Having excelled in luxury home development for so many years, KOSL continues to deliver exceptional quality without compromise. KOSL’s emphasis on thoughtful execution, functional elegance, and client-focused innovation continues to define its place in high-end development. Their commitment to timeless standards ensures each home is not only beautiful but built to last—and live—well. The niche market of luxury real estate development has an underlying dynamic esoteric to many, where key performers known for their credible performance are highly regarded. We look forward to watching KOSL continue their growth trajectory one success story at a time.

Continuing the KOSL Legacy

KOSL Building Group is not defined by flash or fanfare—but by its unwavering pursuit of superior living spaces that reflect character, functionality, and grace. With the ability to guide clients from the purchase of property to the completion of construction and beyond, KOSL has mastered the art of designing luxurious residences that are as classic as they are inventive. With Bobby and Oran Ben-Simon at the helm, KOSL continues to carve its legacy not only through the homes it builds, but the trust it earns. Their projects stand as a testament to enduring value, unwavering quality, and a passion for excellence. As KOSL expands and develops, it becomes clear why their significant impact on residential landscapes has persisted for decades, fueling their heightened trajectory for years to come.  Their aspirations for the future align with their successes, embedding their reputation as a leading force in the world of real estate.

The Minds Shaping KOSL’s Legacy

Bobby Ben-Simon, KOSL's Founding President, is a true visionary whose ambitious drive and passion culminated in the foundation of one of the most well-known residential development enterprises in the Tri-state area. Bobby’s incredible success has derived from his unparalleled perseverance over the course of nearly 40 years, creating the legacy KOSL is known for today.

Oran Ben-Simon, KOSL's Executive Vice President, is a brilliant professional who has continuously transformed the organization by pursuing his own goals, which were sparked by his father. His intricate involvement has bolstered the company’s trajectory over the years, creating new opportunities across real estate sectors. Oran’s creative mentality coupled with his analytical demeanor has upheld his reputation as an integral asset in the world of residential development. 

"KOSL continues to deliver exceptional quality without compromise, ensuring each home is not only beautiful but built to last—and live—well."