Rancho Mission Viejo
Rancho Mission Viejo (Rancho Misión Vieja) is an active 23,000 acres (9,300 ha) ranch and farm, habitat reserve, and community in the unincorporated areas of South Orange County, California. Rancho Mission Viejo originated as a series of land grants to John Forster in 1845. The remaining part of Rancho Mission Viejo consists of a nearly 17,000-acre (6,900 ha) nature reserve (The Reserve at Rancho Mission Viejo) and multiple residential communities slated to open in phases between 2010 and 2030. As of 2017, the Sendero village and the Gavilan senior housing developments have been completed. The larger Esencia village is currently under construction.
The ranch's history can be traced back to 1845 when John (Don Juan) Forster acquired Rancho La Paz and Mission San Juan Capistrano. Forster added these properties to Rancho Trabuco, which he had purchased in 1843. Forster's brother-in-law was Pío Pico, governor of then-Mexican-held California. In 1864, Forster added Rancho Santa Margarita y Las Flores to his holdings, which then totaled about 200,000 acres (81,000 ha), making him one of the largest landowners in the state.
After Forster died in 1882, Irish immigrants Richard O'Neill Sr. and James Flood acquired the ranch, taking equal ownership of the Rancho Santa Margarita y las Flores, Rancho Mission Viejo and Rancho Trabuco lands. Flood provided the money to purchase the ranches; O'Neill, offering his skills as a cattleman as sweat equity, agreed to work out his half as resident manager. Under O'Neill, the cattle herd was expanded, the land was improved, row crops were introduced, and the ranch became Orange County's largest producer of wheat.
In 1907, James L. Flood, son of the original owner, made good on his late father's promise and conveyed an undivided half interest to O'Neill, Sr. Four months later, declining health caused O'Neill to deed his interest to his son, Jerome. In 1923, the sons of Flood and O'Neill consolidated their partnership with the Santa Margarita Company. Shortly thereafter, both men died.
The Santa Margarita Co. was dissolved in 1939 when the ranch was split in two. Richard O'Neill Jr. retained the portion of the ranch located in Orange County (Rancho Mission Viejo and Rancho Trabuco) and the Flood family took the Rancho Santa Margarita y las Flores property in San Diego County. In 1942, the United States Marine Corps acquired the entire San Diego portion of 123,620 acres (500.3 km2) for $4,239,062 to expand Camp Pendleton. After the war, what remained of the historic Ranch now encompassed two Orange County parcels, united under the name Rancho Mission Viejo, and totaling 52,000 acres (210 km2).
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