San Mateo County, CA Triplexes for Sale

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Updated: Aug 7

Victorian Triplex With Detached Cottage

315-319 10th Street, San Francisco, CA 94103

$1,725,000

4,576 sqft 0.06 AC lot

Three‑unit Victorian property with 4,576 square feet
Two vacant remodeled units, including the upper‑level flat
Two 3‑bedroom, 1‑bath flats with approximately 10‑foot ceilings
Detached legal 1‑bedroom, 1‑bath cottage
0.0574‑acre parcel with garage parking

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315-319 10th Street, San Francisco, CA 94103

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Est. Cap Rate

8.6%
Above avg (5.9%)
Est. NOI

$149K
Annual
Price @ 7% Cap

$2.12M
Above asking
Property Type

Triplex
Built 1908

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Updated: Jul 30

Three-Unit Residential Triplex

177 Poplar AVE, Redwood City, CA 94061

$1,650,000

4,530 sqft 0.17 AC lot

Triplex with two 2‑bedroom, 1‑bath units and one 3‑bedroom, 2‑bath unit
4,530 square feet of living area on a 7,500‑square‑foot lot
Private attached garage for each residence
One unit includes a large yard
Built in 1978; wood‑frame construction with a metal roof

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3-Unit Triplex with Owner’s Residence

2275 California Street, San Francisco, CA 94115

$4,500,000

6,000 sqft

Three-unit property combines two occupied flats with a larger residence available vacant at closing.

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Triplex with Private Garages

177 Poplar Avenue, Redwood City, CA 94061

$1,650,000

4,530 sqft 0.17 AC lot

Three-unit property offers varied bedroom layouts and an owner-occupancy option.

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Mixed-Use Property With Retail Frontage

4871 Mission ST, San Francisco, CA 94112

$1,200,000

3,075 sqft 0.05 AC lot

NC3-zoned property combines ground-floor commercial space with leased apartments and a separate owner’s unit.

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Well-Maintained Residential Triplex

466 Willow AVE, Half Moon Bay, CA 94019

$1,390,000

3,145 sqft 0.11 AC lot

Three-unit residential property with electric heating, public water service, and a composition roof.

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Vacant Mixed-Use Property

3774 Mission ST, San Francisco, CA 94110

$1,900,000

2,536 sqft 0.06 AC lot

Three updated residential units accompany a street-facing commercial storefront with flexible owner-user potential.

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Three-Unit Multifamily Victorian

751 Capp Street, San Francisco, CA 94110

$3,748,000

5,500 sqft

Fully occupied three-unit building with updated kitchens and baths, built in 1900 and configured for large bedroom layouts.

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Multifamily Property with Separate Residence

1544-1548 Hyde Street, San Francisco, CA 94109

$2,995,000

6,924 sqft 0.09 AC lot

Includes a remodeled four-bedroom, two-bath home plus an adjacent three-unit building.

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Coastal Triplex with Three-Car Garage

470 Willow AVE, Half Moon Bay, CA 94019

$1,390,000

3,065 sqft 0.11 AC lot

Fully occupied three-unit property includes laundry facilities and covered parking.

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Victorian Triplex with Garden

133-135A Saturn Street, San Francisco, CA 94114

$1,595,000

2,240 sqft

Three-unit residential property with landscaped outdoor areas, city and hill views, and one unit delivered vacant.

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Victorian Triplex with Rooftop Access

1630-1634 Hyde St, San Francisco, CA 94109

$3,699,000

4,830 sqft 0.06 AC lot

Three residential flats share a fenced backyard, patio, and two-car garage.

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Tenant-Occupied Triplex with Garage

1545-1547 Balboa Street, San Francisco, CA 94118

$1,950,000

2,850 sqft 0.06 AC lot

Inner Richmond multifamily property with three residential units and an attached garage.

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Classic Triplex Apartment Building

1206 Fulton St, San Francisco, CA 94117

$2,500,000

2,880 sqft

Three residences provide varied bedroom and bathroom configurations with shared outdoor space and parking.

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Three-Unit Triplex with Backyard

130 Grand View AVE, San Francisco, CA 94114

$3,800,000

3,353 sqft 0.06 AC lot

Three-unit triplex on a small lot with a backyard, storage, and off-street, open, and assigned parking.

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Triplex with Attached Garages

430 Pine AVE, Half Moon Bay, CA 94019

$1,300,000

3,834 sqft 0.14 AC lot

Two-level triplex with separate utility metering, dedicated laundry rooms, and parking serving each unit.

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Triplex with Panoramic Views

Daly City, CA 94014

$1,400,000

4,348 sqft

Well-prepared triplex with updated kitchens and separate gas and electric meters, plus a 2-car garage and laundry area.

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Two-Story Triplex with Garage

1294 Guerrero Street, San Francisco, CA 94110

$1,749,000

2,880 sqft 0.04 AC lot

Three-unit configuration includes two one-bedroom residences and one two-bedroom residence.

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Triplex with On-Site Parking

633 Central Avenue, San Francisco, CA 94117

$1,500,000

2,800 sqft

Maintained multifamily property with varied apartment layouts, resident laundry, basement storage, and separately metered gas service.

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Nine-Bedroom Triplex

1196 Quesada Avenue, San Francisco, CA 94124

$1,188,000

3,500 sqft 0.06 AC lot

Three-unit residential property near the bay with garage parking and public utilities.

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Triplex with Three-Car Parking

2645-2647 Turk Boulevard, San Francisco, CA 94118

$2,500,000

3,541 sqft

Three leased residential units occupy a semi-detached corner building with period architectural details and dedicated parking.

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Triplex with Tall Basements

40-44 San Carlos Street, San Francisco, CA 94110

$1,139,000

2,825 sqft 0.05 AC lot

Units have separate water and PG&E meters, plus tall basements across the front duplex and rear cottage.

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Triplex in Need of Repairs

1196 Quesada Avenue, San Francisco, CA 94124

$1,188,000

3,500 sqft

Triplex built in 1919, approximately 3,500 SF, sold as-is and currently in need of repairs per inspection.

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Vacant Edwardian Triplex

San Francisco, CA 94102

$3,995,000

5,427 sqft

Three full-floor flats retain period character, with in-unit laundry and a garden-level bonus apartment.

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San Mateo County, CA Triplexes Market Trends and Statistics

Explore 83 triplexes for sale in San Mateo County, CA, showcased through 83 active listings on our real estate platform. These investment opportunities span a total of 164,154 square feet of properties for sale, with an estimated market value of $123,950,050.

Sale prices for three-family homes in San Mateo County, CA start at $1,139,000, averaging $2,295,371, and reaching up to $7,850,000 — 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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