Founded in 1948 as a lumber yard on Ostrander Avenue, Riverhead Building Supply Corp. is a family-operated building materials supplier serving builders, contractors, architects, and homeowners across Long Island and New England. The founding family’s third generation now operates the company, which has grown to 23 locations and more than 800 employees. Its Calverton Millwork Shop manufactures custom pre-hung doors and moulding and trim.
Mensch SupplyFounded in 1947 by brothers Eddie and Julius Mensch as a local lumberyard, Mensch Supply now distributes building materials, architectural millwork and maintenance supplies to contractors and property managers across the New York tri-state area. The company has expanded from small custom millwork into large architectural projects while retaining a supply-house approach built around personal service. Its Bronx, Manhattan and Queens locations support daily delivery throughout New York City and surrounding counties, along with commercial installation and custom millwork services.BRONX, NY
Millwork Brands IncMillwork Brands Inc. is a family-owned and operated building materials company founded in 1978, supplying millwork through wholesale, commercial, and residential channels. It manufactures custom wood doors, mouldings, and stair parts, with prefinishing capabilities, and operates multiple warehousing and production facilities totaling 150,000 square feet.VAN WERT, OH
Lezzer LumberFounded in 1927, family-owned Lezzer Lumber is a Pennsylvania building-materials retailer and manufacturer operating under its third generation. The company has 15 retail stores, three commercial door facilities, and a truss manufacturing plant in Pennsylvania; it also produces custom millwork and cabinetry through its millwork shop.CURWENSVILLE, PA
Deer Park Stairbuilding & Millwork CoDeer Park Stairbuilding & Millwork Co. is a third-generation family-owned Long Island company that manufactures and installs custom stairways and millwork. The company says it has supplied the tri-state area for more than 65 years, producing projects that range from simple staircases to elaborate designs.BLUE POINT, NY