Rare, once-in-a-lifetime luxury estate in the prestigious Ryan Tract of Lower Hillsborough. Set on a flat 42,304 sq ft gated lot, this property offers 5 beds, 6.5 baths, solar, regulation tennis court, large pool + separate spa, lush gardens, expansive lawns, multiple patios, putting green, outdoor BBQ, long private driveway, motor court, and 3-car garage. The main residence features an elevator; all bedrooms en-suite; chefs kitchen with butlers pantry; family room; living room; formal dining room; multiple office/workshop spaces; and more. Additional structures include a pool house and a full guest house attached to the garage. Total advertised living space of 7,950 sq ft includes the main house, 945 sq ft 2-bed/2-bath guest house with full kitchen and living/dining area, and a 685 sq ft pool house with living space, kitchenette, laundry, full bath, and sauna. Walking distance to Downtown Burlingame and access to top-rated California schools. A true blend of elegance, scale, and resort-style living.
MLS #
ML82010473
MLS Source
MLSListings, Inc.
Bedrooms
More than One Primary Bedroom
Bathrooms
Double Sinks, Other, Shower and Tub, Tub
Kitchen
Island, Other, Pantry
Appliances
Dishwasher, Other, Oven Range, Refrigerator
Dining Room
Formal Dining Room
Family Room
Separate Family Room
Fireplace
Living Room
Flooring
Hardwood
Laundry
Inside
Cooling
Other
Heating
Other
Roof
Other
Foundation
Other
Garage/Parking
Detached, Garage: 3 Car(s)
Elementary District
Hillsborough City Elementary
High School District
San Mateo Union High
Sewer
Public Sewer
Water
Public
Zoning
R10025
818 Irwin Dr is a Single Family Residence in Hillsborough, CA 94010. This 7,950 square foot property sits on a 0.971 Acres Lot and features 5 bedrooms & 6 full and 1 partial bathrooms. It is currently priced at $12,000,000 and was built in 1927. This address can also be written as 818 Irwin Dr, Hillsborough, CA 94010.
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This listing information is up-to-date as of December 15, 2025. For the most current information, please contact Stanley Lo, (650) 373-0007