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    Ontario, CA Duplexes for Sale

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    Los Angeles, CA Lancaster, CA California City, CA
    Ontario Residence with ADU
    $1,100,000
    2,754 SF

    Ontario Residence with ADU

    340 W Caroline Street, Ontario, CA 91762

    Spacious 7-bedroom home with detached ADU, generating rental income.

    • Currently generating over $8,200/mo in rental income.
    • Detached 1 bedroom, 1 bathroom ADU offers flexibility for family, guests, or rental income.
    • 7 bedroom, 4 bathroom home provides ample space.
    • Full kitchen equipped with brand new appliances and plenty of storage.
    • Spacious living area with high ceilings and a classic brick fireplace.
    Updated: Apr 10
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    Multifamily Property with New ADU
    $825,000
    1,720 SF

    Multifamily Property with New ADU

    718 S Vine Avenue, Ontario, CA 91762

    Multifamily property featuring a newly built detached ADU.

    • New detached ADU (720 sqft) built in 12/2024 with 2 bedrooms and 2 bathrooms, new A/C mini split, and covered patio.
    • Three rental income streams: the ADU and two units in the main building.
    • Four parking spaces in the rear yard with alley access.
    • New sewer line and electric breaker box.
    • Fruit trees (mango, avocado, guayabo) on the property.
    Updated: Aug 30, 2025
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    Based on your search, we've compiled 6 Potential Opportunities for your consideration. Besides 2 Active listings in Ontario, CA, we suggest exploring several alternatives: 4 properties in Nearby Cities

    Explore Opportunities in Nearby Cities

    Here are 4 Similar properties we found in Nearby Locations for your consideration.

    Turnkey Duplex with ADU Potential
    $799,000
    1,571 SF

    Turnkey Duplex with ADU Potential

    Remodeled duplex on a large lot with income potential.

    16748 Athol 16744, Fontana, CA 92335
    View details
    Fontana Industrial Property with Duplex
    $3,650,000
    2,141 SF

    Fontana Industrial Property with Duplex

    Zoned industrial property featuring a main house and duplex.

    10881 Oleander Avenue, Fontana, CA 92337
    View details
    Mixed-Use Property in Pomona
    $899,900

    Mixed-Use Property in Pomona

    Mixed-use property featuring a commercial unit and two updated apartments.

    440 W Holt, Pomona, CA 91768
    View details
    Pomona Duplex: Income Potential
    $950,000

    Pomona Duplex: Income Potential

    Income-generating duplex in Pomona with two units and desirable location.

    1936 Royalty Drive, Pomona, CA 91767
    View details

    Ontario, CA Duplexes Investment Opportunities Market Analysis

    Explore 2 duplexes for sale in Ontario, CA on our real estate platform. These investment opportunities span a total of 492,228,000 square feet of properties for sale, with an estimated market value of $1,100,000.

    Sale prices for duplexes in Ontario, CA start at $1,100,000, averaging $1,100,000, and reaching up to $1,100,000 — offering options for a variety of budgets and business needs. Daily updated analytics ensure you stay ahead with the latest data and market trends.

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