LUXURY HOME DEVELOPERS

Building Quality New Homes for 35 Years

KOSL Building has been developing high-end homes throughout Westchester County, New York and Greenwich, Connecticut for over 35 years. Focusing on premium locations and quality craftsmanship, KOSL Building facilitates a seamless new construction package from start to finish. Our turnkey services involve property acquisitions, designing plans, land-use approvals, financing solutions and construction management, resulting in a streamlined process.
Renowned for our extensive expertise and exceptional service, KOSL Building has been distinguished through various awards as the top residential builder in Westchester, NY for several years consecutively. Having developed over 200 high-quality homes, our experience and customer service has continued to flourish permitting us to accommodate any client’s needs. Contact us today to get started on your dream home!

OUR WORK

Luxury Homes

WHO WE ARE

About KOSL Building

A tradition of building outstanding luxury homes.

Over the past 35 years, KOSL Building has been recognized as one of the most prestigious real estate developers in Westchester County. Our diverse portfolio consists of a plethora of projects varying from Traditional to Modern Homes that can accommodate any client’s desires. Focused on thoughtful quality, KOSL’s renowned customer service is second to none.

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