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Building Supply of Manassas is a full-service building materials supplier serving the needs of professional builders, contractors, remodelers, and homeowners in the Manassas and surrounding areas. We offer a wide range of products including lumber, plywood, windows, doors, columns, decking, kitchen cabinetry, trusses, metal studs, drywall, moulding and millwork. Our services include engineered floor system design, material take-offs, kitchen and bath design, as well as turnkey installed sales for professional builders.