818 Irwin Drive
Hillsborough, CA, 94010 $ 15,280,000
Bedrooms5 Baths6.1 Sq 7,950 Monthly Estimate*
$ 95,327
for $15,280,000 with 5 bedrooms and 6 full baths, 1 half bath. This 7,950 square foot home was built in 1927 on a lot size of 0.971166.
Rare once-a-lifetime luxury estate in the prestigious Ryan Tract neighborhood of Lower Hillsborough! Set on a sprawling, all flat 42,304 sq ft lot, this gated home features 5 beds, 6.5 baths, solar panels, a full regulation tennis court, large pool with separate spa, lush gardens, spacious lawn areas, multiple patios, a putting green, outdoor BBQ, long private driveway, motor court, 3-car garage, etc. Inside the main residence you'll find an elevator, every bedroom with an en-suite bathroom, a chef's kitchen with a butler's panty, a family room, living room, formal dining room, several office workshops, and MORE! A true blend of elegance, scale, and resort-style living. In addition to the main house, there's also a pool house and full guest house attached to the 3-car garage. The total advertised square footage of 7,950 includes both the pool house and guest house as well as the main house. The 945 sqft guest house features 2 bedrooms, 2 bathrooms, and a full kitchen / living & dining room area. The 685 sqft pool house features a large living space, kitchenette, laundry, full bathroom, and sauna. On top of all that, you're within walking distance to popular Downtown Burlingame and families get access to some of California's best schools. This is elevated living!
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FeaturesGeneralLiving Area 7950
Sewer Public Sewer
Heating Other
Cooling Other
Roof Other
Appliances Dishwasher
Zoning R100
Garage Spaces 3
Year Built 1927
Stories Count 2
Levels Two Story
Property Subtype Detached
County San Mateo
Property Type Residential
HOA N
Garage Y/N Yes
Green Energy Generation Solar
Full Baths 6
Status Pending
City Hillsborough
High School District San Mateo Union High
MLS Area Listing
Lot Size Square Feet 42304
Virtual Tour https://youtu.be/P39xB3RfvfM?si=17N_5ftm_Tsx-V3n
Standard Status Pending
Elementary School District Hillsborough City Elementary
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InteriorInterior Amenities Family Room Formal Dining Room Workshop Pantry
Flooring Hardwood
Fireplace Features Living Room
Air Conditioning Y/N Yes
Heating Y/N Yes
Fireplace Y/N Yes
Total Bedrooms 5
Kitchen Features Dishwasher Kitchen Island Pantry Other
Total Baths 7
1/2 Baths 1
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ExteriorExterior Amenities Back Yard Other
Lot Features Level
Water Source Public
Lot Size Area 42305.472
Foundation Details Other
Building Area Total 7950
Lot Size Acres 0.9712
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* Excluded FeaturesList ByGreen Banker RealtyBroker
stanleylo@greenbanker.comEmail
Affordability Calculator
- Monthly Principal & Interest
- $95,327
- Monthly Property Taxes
- --
- Monthly Home Insurance
- --
Default based on a 30-year fixed rate of 6.375% with 20% down. The estimated payment is offered for convenience and is not an offer of credit. Due to market fluctuations, interest rates are subject to change at any time and without notice. Your individual rate may vary. Rates may differ for FHA, VA or jumbo loans.
Learn more about how to save NearbySingle family listings in Hillsborough, CA
Average List Price $10,482,889
Percent of Sale Price 31%
About Hillsborough, CA 11,149 Population
3% Since 2002
$ 195,338 Median Income
50.58 Median Age
36% Households with Children
Trends Information provided by ATTOM Data Solutions.
4250415 Elementary School
4250413 Middle School
Unknown High School High School
Pricing History| Date | Price | Price Change | Description |
|---|
| 9/21/2025 | $15,280,000 | | Listed Price |