Brookdale Senior Living Solutions Inc. operates senior housing in the U.S. Brookdale's retirement centers are targeted toward middle- to upper-income seniors, typically over the age of 75. They provide basic services, like meals and housekeeping, supplemental-care services to assist residents with daily activities, and 24-hour assistance designed for residents with Alzheimer's disease or other dementia. The company is established in 1978 and is based in Brentwood, TN.