First of all, there was no one mass producer of all the economical houses in all of the suburbs around the United States. There was no one person, like Henry Ford with cars, who had an assembly line for houses that dominated the national market. However, there is one name that is probably the answer that you are supposed to find.
This name is William Levitt. William Levitt was the president of the firm of Levitt and Sons. You should check in your textbook or in your lecture notes to see if either Levitt’s name or the name of the company is mentioned. Levitt and his company were responsible for building the first really well-known suburb in the 1950s. This was the suburb of Levittown on Long Island, New York. This was a large suburb with houses that were produced economically, thus allowing the company to charge prices low enough to be affordable for middle class buyers. Levittown is synonymous with the overall trend towards suburbanization that took place all across the United States during and after the 1950s.