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    San Mateo County, CA Duplexes for Sale

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    Los Angeles, CA Lancaster, CA San Diego, CA
    18 results
    Potrero Hill Vacant Duplex
    $850,000
    752 SF

    Potrero Hill Vacant Duplex

    2109 22nd St, San Francisco, CA 94107

    Vacant duplex in coveted Potrero Hill neighborhood.

    • Rare development opportunity in highly desirable Potrero Hill location.
    • Vacant duplex offering immediate rental income potential.
    • Deep lot allows for significant expansion or garden development.
    • Top‑floor unit features a private deck.
    • Lower‑level unit includes an expansive patio.
    Updated: May 13
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    Victorian Duplex in Lower Pacific Heights
    $2,500,000
    2,502 SF

    Victorian Duplex in Lower Pacific Heights

    2654-2656 Bush St, San Francisco, CA 94115

    Charming San Francisco duplex with income potential and modern comfort.

    • Prime Lower Pacific Heights location, near Fillmore Street, Alta Plaza Park, The Presidio, Laurel Village, and Sacramento Street.
    • 2,502 sq ft Victorian duplex offering flexibility, income potential, and classic charm.
    • Upper unit: Fully remodeled 3‑bed, 2‑bath with light‑filled kitchen, vaulted‑ceiling living room, and marble fireplace.
    • Solarium‑style glass enclosure in upper unit with views of the lush backyard.
    • Lower unit: 2‑bed, 1‑bath with cozy living room and cheerful kitchen with breakfast nook.
    Updated: Jul 11, 2025
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    San Francisco Multifamily Near Golden Gate
    $1,995,000
    3,075 SF

    San Francisco Multifamily Near Golden Gate

    Two updated flats near Golden Gate Park with parking.

    1215 34th Avenue, San Francisco, CA 94122
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    Redwood City Income Property
    $1,595,000
    2,548 SF

    Redwood City Income Property

    Two spacious units in Redwood City's Palm Park neighborhood.

    1029 Redwood Avenue, Redwood City, CA 94061
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    San Francisco Duplex with Expansion Potential
    $899,000
    1,410 SF

    San Francisco Duplex with Expansion Potential

    Vacant duplex in Mission location with expansion possibilities.

    2758-2760 23rd Street, San Francisco, CA 94110
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    Noe Valley Multifamily Opportunity
    $1,175,000
    3,100 SF

    Noe Valley Multifamily Opportunity

    Two units with potential in desirable Noe Valley.

    1525 Church St, San Francisco, CA 94131
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    Golden Gate Park Front Duplex
    $1,595,000
    2,500 SF

    Golden Gate Park Front Duplex

    Rare duplex facing Golden Gate Park, ideal for owner-user or investment.

    3427-3429 Lincoln Way, San Francisco, CA 94122
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    San Francisco Duplex with Backyard
    $1,995,000
    2,629 SF

    San Francisco Duplex with Backyard

    Charming duplex in prime location with spacious backyard.

    2661-2663 Greenwich Street, San Francisco, CA 94123
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    Duplex in Walker's Paradise
    $739,000

    Duplex in Walker's Paradise

    Two units with large backyard, convenient to amenities.

    630 Athens St, San Francisco, CA 94112
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    Russian Hill Renovation Opportunity
    $1,388,000
    0.06 Acres

    Russian Hill Renovation Opportunity

    Permitted renovation project in desirable Russian Hill neighborhood.

    1437 Mason St, San Francisco, CA 94133
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    San Francisco Two-Unit Building
    $1,500,000
    2,322 SF

    San Francisco Two-Unit Building

    Vacant two-unit building in the Central Sunset neighborhood.

    2410-2412 34th Avenue, San Francisco, CA 94116
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    Mission Street Mixed-Use Building
    $950,000
    3,200 SF

    Mission Street Mixed-Use Building

    Three-unit mixed-use building in vibrant Excelsior District.

    Mission Street, San Francisco, CA 94112
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    Vacant Mixed-Use Building with Development Potential
    $1,600,000
    3,490 SF

    Vacant Mixed-Use Building with Development Potential

    Ready-to-use 4-unit building with development potential near 24th Street.

    2976 Mission Street, San Francisco, CA 94110
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    Presidio Heights Two-Family Property
    $3,150,000
    7,293 SF

    Presidio Heights Two-Family Property

    Two-family property in Presidio Heights, San Francisco.

    3104 Sacramento Street, San Francisco, CA 94133
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    Ingleside Heights Mixed-Use Investment
    $1,400,000
    3,242 SF

    Ingleside Heights Mixed-Use Investment

    Mixed-use property with retail and residential units in San Francisco.

    729 Randolph St, San Francisco, CA 94132
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    Russian Hill Renovation Opportunity
    $1,388,000
    0.06 Acres

    Russian Hill Renovation Opportunity

    Permitted renovation project in desirable Russian Hill neighborhood.

    1437 Mason St, San Francisco, CA 94133
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    Entitled Project in Prime Location
    $3,880,000

    Entitled Project in Prime Location

    Approved project with 14 units near shopping and transit.

    141 3rd Avenue, Daly City, CA 94014
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    Eureka Valley Mixed-Use Property
    $1,249,000
    1,986 SF

    Eureka Valley Mixed-Use Property

    Mixed-use property in the heart of the Castro District.

    323 Noe St, San Francisco, CA
    View details
    Based on your search, we've compiled Potential Opportunities for your consideration. Besides 18 Active Listings in San Mateo County, CA

    San Mateo County, CA Duplexes Investment Opportunities Market Analysis

    Explore 18 duplexes for sale in San Mateo County, CA, showcased through 18 active listings on our real estate platform. These investment opportunities span a total of 42,248 square feet of properties for sale, with an estimated market value of $23,252,000.

    Sale prices for duplexes in San Mateo County, CA start at $799,000, averaging $1,550,133, and reaching up to $3,150,000 — 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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