Where is lennar headquarters? Founded in 1954, Lennar Corporation is headquartered in Miami, Florida and is one of leading home builders in the nation.Is lennar a good builder? Lennar. Lennar has reputation for building quality new construction homes. Their satisfied homeowners give them an average rating of 3.8 stars for their beautiful floor plans and affordable upgrades, their skilled craftsmanship, and commitment to customer service on each house they build. You can read all of Lennar’s 3118 homeowner reviews to learn why they are the right team to build your new home.What is lennar corp? Lennar's branch office in San Ramon, California. Lennar Corporation is a home construction and real estate company based in Miami, Florida. In 2017 the company was the largest home construction company in the United States after its purchase of CalAtlantic Homes. The company is ranked 230th on the Fortune 500.