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    San Mateo County, CA Triplexes for Sale

    8 results
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    San Mateo Income Property
    $1,698,000
    2,490 SF

    San Mateo Income Property

    119 E Poplar Ave, San Mateo, CA 94401

    Well-maintained duplex with additional unit in prime location.

    • Prime location between Downtown Burlingame and Downtown San Mateo.
    • Three units offer flexibility for investors or owner‑occupants.
    • Updated interiors with dual‑paned windows, newer carpet, and tile flooring.
    • Recent improvements include new dual paned windows, fresh paint, and an updated sewer lateral.
    • Large lot with potential for an ADU (buyer to verify).
    Updated: Feb 28
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    Nob Hill Victorian Multi-Family
    Pending
    $1,986,000
    6,386 SF

    Nob Hill Victorian Multi-Family

    1645-1649 Sacramento St, San Francisco, CA 94109

    Spacious 3-unit Victorian in San Francisco's Nob Hill.

    • Sweeping panoramic city views
    • Prime Nob Hill location near Polk Street, Russian Hill, Pacific Heights, and downtown
    • Three generously sized units, totaling over 6000 sqft
    • Classic Victorian architecture with original period detailing
    • Excellent investment opportunity with income potential
    Updated: Dec 11, 2025
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    Mixed-Use Property in San Francisco
    $1,200,000
    3,075 SF

    Mixed-Use Property in San Francisco

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

    4871 Mission St, San Francisco, CA 94112
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    Pacific Heights Triplex Opportunity
    $649,000

    Pacific Heights Triplex Opportunity

    Three-unit building in a sought-after San Francisco location.

    1450 Lyon St, San Francisco, CA 94115
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    San Mateo Triplex in Aragon
    $2,098,000

    San Mateo Triplex in Aragon

    Turn-key three-unit building in San Mateo's Aragon neighborhood.

    6 Avila Rd, San Mateo, CA 94402
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    Redwood City Triplex Opportunity
    $1,650,000

    Redwood City Triplex Opportunity

    Triplex in desirable Redwood City neighborhood with long-term tenants.

    1235 Whipple Ave, Redwood City, CA 94062
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    Mixed-Use Triplex in Outer Mission
    $1,199,000

    Mixed-Use Triplex in Outer Mission

    Mixed-use triplex with income potential in a convenient location.

    5306-5308 Mission St, San Francisco, CA 94112
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    Burlingame Triplex Investment Opportunity
    $1,939,999

    Burlingame Triplex Investment Opportunity

    Fully leased triplex in prime Burlingame location.

    824 El Camino Real, Burlingame, CA 94010
    View details
    Based on your search, we've compiled 8 Potential Opportunities for your consideration. Besides 8 Active listings in San Mateo County, CA, we suggest exploring several alternatives:

    San Mateo County, CA Triplexes Investment Opportunities Market Analysis

    Explore 8 triplexes for sale in San Mateo County, CA, showcased through 8 active listings on our real estate platform. These investment opportunities span a total of 12,937 square feet of properties for sale, with an estimated market value of $4,884,000.

    Sale prices for three-family homes in San Mateo County, CA start at $1,200,000, averaging $1,628,000, and reaching up to $1,986,000 — 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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