John D. Patterson purchased additional land, and upon his death on March 7, 1902, a total of 18,462 acres were willed to Thomas W. Patterson and William W. Patterson, his estate executors, and other heirs. The land was sold to the Patterson Ranch Company on May 16, 1908 for the sum of $540,000 cash gold coin.
Thomas W. Patterson subdivided the land into ranches of various sizes and plotted the design of the town of Patterson. Determined to make Patterson different from most, he modeled his town after the Cities of Washington D.C. and Paris, France, using a series of circles and radiating streets. Major streets were planted with Palms, Eucalyptus and Sycamore trees.