Half Moon Bay, California, a small city located 30 miles south of San Francisco along the Pacific coast, has adopted policies to address the affordable housing and social service needs of its growing population of senior residents. The city is in one of the most expensive housing markets in the country, and its housing plan projects that the need for affordable senior housing will grow as the city’s population increases. Senior residents also need health care and social services so that they can age in place as an alternative to institutionalized care in nursing homes. In recent years, a collaboration among San Mateo County, the city of Half Moon Bay, and local service providers has resulted in the Half Moon Bay Senior Campus, which provides housing, services, and amenities on a 10-acre site. The campus, derived from a 2009 plan, consists of 264 units of affordable rental housing in 3 separate developments that help senior residents age in place. In addition to offering social services through its onsite adult day health center and senior center, the campus encourages aging in place and active living through a network of pedestrian pathways as well as adjacent bus stops that provide access to the nearby downtown. One of the 3 housing developments on the campus is Half Moon Village, 160 units of affordable rental housing and services for low-income seniors.