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    San Mateo, CA Triplexes for Sale

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    Historic San Mateo Triplex with Studio
    $1,998,888
    3,880 SF

    Historic San Mateo Triplex with Studio

    320 Villa Ter, San Mateo, CA 94401

    1907 triplex with bonus studio in central San Mateo.

    • Rare 1907 Triplex with Bonus Studio in Central San Mateo Location
    • Significant Rental Income Potential from Four Units (Including Non‑Conforming Studio)
    • Large 7,500 sqft Lot with ADU Potential (Buyer to Verify)
    • Each Unit Includes an Attached One‑Car Garage
    • Updated Kitchens and Bathrooms in Multiple Units
    Updated: Dec 22, 2025
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    San Mateo Triplex in Aragon
    $2,098,000

    San Mateo Triplex in Aragon

    6 Avila Rd, San Mateo, CA 94402

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

    • Turn‑key 3‑unit building in the desirable Aragon neighborhood of San Mateo.
    • Significant income upside potential.
    • Each unit features a remodeled kitchen, living room, and formal dining room.
    • Unit 1 features 2 bedrooms, exposed hardwood floors, and a remodeled bathroom.
    • Outdoor space includes a side yard with mature landscaping, artificial turf, deck area, and a backyard for relaxing and bar‑b‑cuing.
    View details
    Based on your search, we've compiled 6 Potential Opportunities for your consideration. Besides 2 Active listings in San Mateo, 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.

    Mixed-Use Triplex in Bayview
    $1,600,000
    3,150 SF

    Mixed-Use Triplex in Bayview

    Versatile property with income potential in a vibrant San Francisco neighborhood.

    6246 3Rd St, San Francisco, CA 94124
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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
    View details
    Central Alameda Triplex with ADU
    $998,000

    Central Alameda Triplex with ADU

    Charming triplex with a recently built ADU in Alameda.

    840 Oak St, Alameda, CA 94501
    View details
    Alameda Triplex with Upside Potential
    $945,000

    Alameda Triplex with Upside Potential

    Triplex in Alameda with market rent opportunities and upgrades.

    2133 Clinton Ave, Alameda, CA 94501
    View details

    San Mateo, CA Triplexes Investment Opportunities Market Analysis

    Explore 2 triplexes for sale in San Mateo, CA on our real estate platform. These investment opportunities span a total of 7,562 square feet of properties for sale, with an estimated market value of $1,998,888.

    Prices for three-family homes in San Mateo, CA start at $1,998,888, averaging $1,998,888, and reaching up to $1,998,888 — offering options for a variety of budgets and business needs. Daily updated analytics ensure you have the most current data.

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    Most Searched ZIP Codes in San Mateo, CA

    • 94401
    • 94402

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