KOSL BUILDING GROUP
KOSL Building develops luxury residential properties, including single-family homes, multifamily apartments, and transitional senior housing residences, in Westchester County, New York, and Greenwich, Connecticut.
About KOSL BUILDING GROUP
Based in Mamaroneck, KOSL Building Group is a general contracting and residential development company serving Westchester County, New York, and Greenwich, Connecticut. With 35 years in business, the company develops luxury single-family homes, multifamily apartment properties, and transitional senior housing residences. Its work spans the development process, including property acquisition, custom home design, land-use approvals, financing support, construction management, and residential property sales. KOSL Building Group works with clients and development partners on projects from initial planning through construction, with a focus on residential properties in the lower Hudson Valley and nearby Connecticut.
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