KOSL Building has been developing high-end homes throughout Westchester County, New York and Greenwich, Connecticut for nearly 40 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 honored with countless awards as an industry leader. Having developed hundreds of high-quality homes, our proven process to accommodate any client’s needs is attributed to our diverse portfolio and customer service. Contact us today to get started on your dream home!




