It extended easterly from San Antonio Creek to what is now Hermosa Avenue, and from today's Eighth Street to the mountains.

Tapía heirs sold Rancho de Cucamonga in 1858, and the large Adobe home was abandoned.

John Rains with his wife built in 1860, a new home and called it Casa de Rancho Cucamonga.

[5]Isaias W. Hellman, a Los Angeles banker, and a San Francisco business syndicate acquired the 13,045 acres (52.79 km2) Rancho Cucamonga at a sheriff's sale in 1871.

Hellman continued to make port and sweet Angelica wine from Cucamonga's fabled vineyard.