In Southern California, Rancho Mission Viejo, which is in the southern part of Orange County and is the largest new community in the state, has been in development since 2001 on 23,000 acres of open space. When completed, it will provide 14,000 homes (including 6,000 homes for 55-plus residents), and its development plans stipulate that seventy-five percent of that open space be preserved. Fire resilience is a tenet of the community’s construction, and they implemented many wildfire resistance tactics long before they became state and local requirements.