I had an ADU constructed in 2020. The city of Ontario assigned the address as, 734 E. Princeton St. Unit B, Ontario, CA 91764. The ADU is detached from the main house. It is approximately 455sf consisting of 1 bedroom, a living room a kitchen and a bathroom with a washer and dryer hook up.
This property is off market, which means it's not currently listed for sale or rent on Zillow. This may be different from what's available on other websites or public sources.

