Rancho Sausal Redondo (Round Willow-grove Ranch) was a 22,458-acre (91 km2) Mexican land grant in present day Los Angeles County, California given in 1837 to Antonio Ygnacio Ávila by Juan Alvarado Governor of Alta California.
In 1822, Antonio Ygnacio Ávila was granted a permit from the new Mexican government to utilize grazing land totaling approximately 25,000 acres on what was to become Rancho Sausal Redondo.
[4] With the cession of California to the United States following the Mexican–American War, the 1848 Treaty of Guadalupe Hidalgo provided that the land grants would be honored.
Clear title to the land did not occur until 1873, when a U.S. District Court upheld Burnett's purchase against a suit filed by Ávila heir Tomas Avila Sanchez.
In 1873, Robert Burnett leased the land to Daniel Freeman and returned to his native Scotland.