$12,000,000
SOLD DEC 15, 2025

818 Irwin Dr Hillsborough, CA 94010

5 Beds
6.5 Baths
7,950 Sq Ft
0.97 Acres

Recently Sold

$1,509 Per Sq Ft

21% Below List Price

0 Day on Market

Highlights

  • Tennis Courts
  • Private Pool
  • Two Primary Bedrooms
  • North Hillsborough School Rated A
  • Solar Power System
  • Wood Flooring

About This Home

As of December 2025

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.

Last Agent to Sell the Property

Stanley Lo

Green Banker Realty License #00874415 Listed on: 09/21/2025

Last Buyer's Agent

Stanley Lo

Green Banker Realty License #00874415 Listed on: 09/21/2025

Home Details

Home Type

  • Single Family

Year Built

  • Built in 1927

Lot Details

  • 0.97 Acre Lot
  • Level Lot
  • Back Yard
  • Zoning described as R10025

Parking

  • 3 Car Detached Garage

Interior Spaces

  • 7,950 Sq Ft Home
  • 2-Story Property
  • Wet Bar
  • High Ceiling
  • Separate Family Room
  • Living Room with Fireplace
  • Formal Dining Room
  • Den
  • Workshop
  • Wood Flooring
  • Laundry Room

Kitchen

  • Oven or Range
  • Dishwasher
  • Kitchen Island

Bedrooms and Bathrooms

  • 5 Bedrooms
  • Double Master Bedroom
  • Walk-In Closet
  • Dual Sinks
  • Bathtub with Shower

Eco-Friendly Details

  • Solar Power System

Outdoor Features

  • Private Pool
  • Tennis Courts
  • Balcony
  • Outdoor Kitchen
  • Barbecue Area

Listing and Financial Details

  • Assessor Parcel Number 028-083-010

Home Details

Home Type

Single Family

Year Built

Built in 1927

Lot Details

0

Parking

3

Listing Details

  • Subclass: Single Family Home
  • Listing Class: Residential
  • Structure Sq Ft: 7950
  • Year Built: 1927
  • Zoning Description: R10025
  • Special Features: None
  • Property Sub Type: Detached

Interior Features

  • Family Room: Separate Family Room
  • Fireplace: Living Room
  • Dining Room: Formal Dining Room
  • Kitchen: Dishwasher, Island, Oven Range, Pantry, Refrigerator
  • Living Sq Ft: 7950
  • Stories: 2
  • Bedrooms: More than One Primary Bedroom
  • Laundry: Inside
  • Flooring: Hardwood
  • Additional Rooms: Office Area, Workshop
  • Full Bathrooms: 6
  • Half Bathrooms: 1
  • Total Bedrooms: 5
  • Bathroom: Double Sinks, Shower and Tub, Tub
  • Fireplace: Yes

Exterior Features

  • Yard/Grounds: Back Yard, Balcony / Patio, BBQ Area, Outdoor Kitchen, Tennis Court
  • Pool: Yes

Garage/Parking

  • Garage Spaces: 3
  • Garage Parking Features: Detached Garage

Utilities

  • Sewer/Septic System: Sewer - Public

Association/Amenities

  • Amenities Miscellaneous: High Ceiling, Walk-in Closet, Wet Bar

Lot Info

  • Lot Description: Grade - Level
  • Parcel Number: 028-083-010
  • Lot Acres: 0.9712
  • Lot Size Area Minimum Units: Square Feet
  • Minimum Lot Size: 42304.00
  • Lot Size Area Maximum Units: Square Feet
  • Maximum Lot Size: 42304.00

Green Features

  • Energy Features: Solar Power

Multi Family

  • Utilities: Public Utilities

MLS Schools

  • High School District Text: San Mateo Union High

Ownership History

Date Name Owned For Owner Type

Purchase Details

Closed on
Jul 20, 2023
Sold by
Wang Yongqi and Zuo Z
Bought by
Zuo

Purchase Details

Closed on
Jul 23, 2013
Sold by
Green Banker Llc
Bought by
Wang Yongqi and Zuo Zuo

Home Financials for this Owner

Home Financials are based on the most recent Mortgage that was taken out on this home.
Original Mortgage
$2,000,000
Interest Rate
3.98%
Mortgage Type
Seller Take Back

Purchase Details

Closed on
Jan 17, 2013
Sold by
Fellows Audrey A
Bought by
Green Banker Llc

Home Financials for this Owner

Home Financials are based on the most recent Mortgage that was taken out on this home.
Original Mortgage
$3,445,000
Interest Rate
3.75%
Mortgage Type
New Conventional

Purchase Details

Closed on
May 17, 2011
Sold by
Fellows Audrey A
Bought by
Fellows Audrey A

Purchase Details

Closed on
Dec 26, 2006
Sold by
Fellows Victor G and Fellows Audrey A
Bought by
Myers Frank G and Myers Susan F

Purchase Details

Closed on
Sep 9, 2003
Sold by
Fellows Victor G and Fellows Audrey A
Bought by
Fellows Victor G and Fellows Audrey A

Purchase Details

Closed on
Aug 11, 2003
Sold by
Fellows Victor G and Fellows Audrey A
Bought by
Fellows Victor G and Fellows Audrey A

Purchase Details

Closed on
Apr 1, 1994
Sold by
Fellows Victor G and Fellows Audrey A
Bought by
Fellows Victor G and Fellows Audrey A

Home Financials for this Owner

Home Financials are based on the most recent Mortgage that was taken out on this home.
Original Mortgage
$129,000
Interest Rate
7.38%
Source: Public Records

Range of Values:

--
Value Increase
--
Percent Increase
--
Adjusted for Inflation
Collateral Analytics

Collateral Analytics Collateral Analytics AVMs (Automated Valuation Model) employ a number of statistical approaches combined with neighborhood-specific comparable selection guarantees the most up-to-date and precise valuations.

Not Available

Collateral Analytics does not have data for the current month. Please view the chart for historical values.

ICE

ICE Mortgage Technology ICE Mortgage Technology’s AVM (Automated Valuation Model) is a state-of-the-art online residential property valuation tool that provides a quick and accurate estimate of the value of almost any home in the U.S.

Not Available

ICE Mortgage Technology does not have data for the current month. Please view the chart for historical values.

First American

First American First American Data & Analytics’ next-generation AVM combines unrivaled data assets with a blended ensemble of valuation models to produce highly accurate, reliable valuations you can trust.

Not Available

First American does not have data for the current month. Please view the chart for historical values.

Quantarium

Quantarium Quantarium’s valuation service, repeatedly proven the industry’s most accurate and comprehensive, is supercharged with a self-learning and auto-tuning AI engine that continually becomes smarter and more accurate as it processes daily inputs from the industry’s leading RE data lake.

Not Available

Quantarium does not have data for the current month. Please view the chart for historical values.

Average Value
Not Available
List Price
Sold Price
Create a Home Valuation Report for This Property
The Home Valuation Report is an in-depth analysis detailing your home's value as well as a comparison with similar homes in the area

Home Values in the Area

Source: Public Records

Average Home Value in this Area





Source: Public Records

Purchase History

Date Type Sale Price Title Company
Gift Deed -- None Listed On Document
Grant Deed $7,100,000 Chicago Title Company
Grant Deed $5,300,000 Chicago Title Company
Interfamily Deed Transfer -- None Available
Interfamily Deed Transfer $500,000 None Available
Interfamily Deed Transfer -- American Title Insurance Co
Interfamily Deed Transfer -- --
Interfamily Deed Transfer -- --
Individual Deed -- Fidelity National Title Ins
Source: Public Records

Mortgage History

Date Status Loan Amount Loan Type
Previous Owner $2,000,000 Seller Take Back
Previous Owner $3,445,000 New Conventional
Previous Owner $129,000 No Value Available
Source: Public Records

Property History

Date Event Price List to Sale Price per Sq Ft
12/15/2025 12/15/25 Sold $12,000,000 -21.5% $1,509 / Sq Ft
09/21/2025 09/21/25 Pending -- -- --
09/21/2025 09/21/25 For Sale $15,280,000 -- $1,922 / Sq Ft
Source: MLSListings

Tax History Compared to Growth

Source: Public Records

Tax History

Year Tax Paid Tax Assessment Tax Assessment Total Assessment is a certain percentage of the fair market value that is determined by local assessors to be the total taxable value of land and additions on the property. Land Improvement
2025 $106,370 $9,164,370 $5,757,265 $3,407,105
2023 $106,370 $8,808,512 $5,533,704 $3,274,808
2022 $100,432 $8,635,799 $5,425,200 $3,210,599
2021 $98,498 $8,466,473 $5,318,824 $3,147,649
2020 $96,867 $8,379,662 $5,264,286 $3,115,376
2019 $94,771 $8,215,357 $5,161,065 $3,054,292
2018 $92,066 $8,054,273 $5,059,868 $2,994,405
2017 $89,899 $7,814,974 $4,960,655 $2,854,319
2016 $81,559 $7,094,260 $4,863,388 $2,230,872
2015 $76,105 $6,580,620 $4,790,336 $1,790,284
2014 $81,282 $7,096,500 $4,500,000 $2,596,500
Source: Public Records

Agents Affiliated with this Home

  • Section Image
See All Agents

Map

Source: MLSListings

MLS Number: ML82010473

MLSListings

APN: 028-083-010