Tres Hermanos Ranch

An image of Tres Hermanos Ranch shows the division between Diamond Bar and Chino Hills and number of acres located in each city. The 2,400-acre ranch is located in both cities but owned by City of Industry’s successor agency.


A master planned community of 1,881 residential units proposed to City of Industry’s oversight board for Tres Hermanos Ranch may hinge on whether Industry can afford to buy the property.

The 2,400-acre ranch straddling Grand Avenue is located in Chino Hills and Diamond Bar, but owned by the successor agency to City of Industry’s former urban development agency.

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