The Lefrak Organization is a building firm with a real estate portfolio in the United States that consists of thousands of apartment buildings and more than 12 million square feet of commercial and office space. Lefrak focuses on large-scale housing, community development and environmental preservation. The building company has erected residential, commercial and retail properties. The Lefrak Organization operates an in-house Architecture-Engineering-Construction Department, employing its own designers, engineers, planners and cost estimators. Lefrak also acts as general contractor at its many building sites. The company also has its own testing laboratory and research and development units. The Lefrak Organization, based in New York, was founded in 1901.