Cosmo Energy Company Limited 

William Lyon Homes, together with its subsidiaries, designs, constructs, markets, and sells single-family detached and attached homes in California, Arizona, Nevada, Colorado, Washington, Oregon, and Texas. The company sells its homes primarily to entry-level and first-time move-up homebuyers. The company offers its services through in-house commissioned sales personnel and outside brokers. As of September 30, 2019, it owned approximately 17,649 lots and had options to purchase an additional 11,593 lots. The company was founded in 1954 and is headquartered in Newport Beach, California.