Which company built the first major planned postwar suburb of Levittown, New York?

Levitt & Sons built Levittown, New York, the first major planned postwar suburb of its type in the United States.

The company, led by William J. Levitt and his brothers Alfred and Abraham, began building the Long Island development in 1947. It used standardized designs, repetitive construction processes, and large-scale purchasing to produce affordable homes rapidly for returning veterans and other buyers. The project eventually contained more than 17,000 houses.

Levittown helped popularize the mass-produced suburban model: detached houses, curving streets, schools, shopping areas, and automobile-oriented living. The homes were initially sold with restrictive racial covenants, which excluded Black buyers; the Supreme Court had ruled such private covenants unenforceable in 1948, but discrimination continued through other practices.

The name Levittown is also used for later Levitt developments in Pennsylvania and New Jersey. The Long Island community is the original project usually meant when the question refers to the postwar suburb built by Levitt & Sons.