For sale

$14,995,000

Est. $97,174/mo —

•

10,495

sq ft

3085 Ralston Ave, Hillsborough, CA 94010

About this home

Situated on a private side street, this grand estate sits on a majestic 2-acres with jaw-dropping panoramic bay views, some of the best in all of Hillsborough. Exquisite architectural detailing and finishes throughout, including inlaid parquet walnut floors, hand carved fireplaces, and walls of glass framing iconic bay views and landscaping. The main level includes a stunning office, billiard hall, and the "Morocco Room" lounge. Upstairs, the large master suite enjoys equally stunning views of the bay, in addition to a luxury spa bath and formal sitting room. A separate in-law suite and wine cellar with tasting room are located on the lower level of the residence. Equally impressive are the surrounding grounds, fully landscaped with grand-scale trees, expanses of manicured lawn, and an elevated terrace overlooking the views and swimming pool. All of this just minutes from shopping, dining, golfing, parks, and top rated Hillsborough schools. (Square Footage Per County Records: 8,629)

Single-familyProperty Type

1929Year Built

2 acresLot Size

$1,429Price/Sq.Ft.

3 car garageParking

Listed by Pierre & Alex Buljan •DRE #70014994 • Compass

Contact: 650-400-1188

Listing updated: Jul 7, 2026 at 01:21pm

Redfin checked: 3 minutes ago

•Source:MLSListings #ML81918112

Payment calculator

$97,174 per month

Principal and interest$78,805

Property taxes

$15,620

HOA dues

Home insurance

$2,749

Utilities

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Open houses

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Around this home

Schools

K - 12
Preschool & daycare

North Hillsborough School

Public K-5 • Assigned • 0.6mi

9/10

Crocker Middle School

Public 6-8 • Assigned • 0.5mi

8/10

Burlingame High School

Public 9-12 • Assigned • 1.9mi

10/10

Provided by GreatSchools

About

Carolands

Carolands, located between El Camino Real and Skyline Boulevard, is a residential and estate-style Hillsborough neighborhood with grand historic mansions and winding, tree-lined lanes. The neighborhood’s character concentrates around the Carolands Chateau, where formal gardens and gated drives set a quiet, museum-like tone. Architectural cues lean Beaux-Arts and Mediterranean Revival, with long setbacks and curated landscaping. The setting feels tucked into the Peninsula’s foothill edge, with filtered bay views from higher streets. Nearby Burlingame Avenue adds a polished café-and-boutique rhythm without changing Carolands’ hush. Trails and open space at the edge of the hills shape a weekend walking routine.

Provided by Walk Score and Local Logic

Market insights

3085 Ralston Ave · $14,995,000

DAYS ON MARKET

The average home goes pending in 16 days.

SALE-TO-LIST

Most homes are selling 6% above list price.

LIST PRICE

Median list price in this area is $1,888,000. (87% lower than this home)

PRICE DROP

13% of homes in this area have had a price drop in the past month.

Property details

Interior
Exterior
Finance

Kitchen

Bathroom

Bedroom

Living

Dining

Interior features
Finished basement
Bonus / hobby room
Den / study / office
Formal entry
Great room
Laundry room
Media / home theatre
Mud room
Storage
Utility room
Wine cellar / storage
Separate family room
Breakfast room
Formal dining room
Secondary living space (approx. 725)

Bedrooms
5 bedrooms
Primary suite / retreat
Walk-in closet

Bathrooms
6 full bathrooms
1 half bathroom

Laundry & utility
Laundry room

Flooring
Carpet
Stone
Wood

Heating & cooling
Central forced air heating
Central forced air cooling
Ceiling fans

Sale and tax history for 3085 Ralston Ave

Sale History
Tax History

Date

Event

Price

MLSListings #ML81918112

Jun 24, 2024

Price Changed

$14,995,000

$1,429/sq ft

Feb 6, 2023

Listed

$15,750,000

$1,501/sq ft

Feb 6, 2023

Listed

$14,995,000

$1,429/sq ft

+24

Public Records

Jan 25, 2001

Sold

$14,900,000

$1,420/sq ft

Public Records

Sep 23, 1992

Sold

$2,250,000

$214/sq ft

Year

Property tax

Land + Additions

Assessment*

2025

$140,373 (+3.5%)

$6,268,500 + $5,739,500

$12,008,000

2024

$135,625 (−19.8%)

$6,268,500 + $5,739,500

$12,008,000

2023

$169,150 (+1.2%)

$9,523,725 + $8,719,573

$18,243,298

2022

$167,102 (−6.2%)

$7,586,000 + $6,946,000

$14,532,000

2021

$178,160 (+16.5%)

$7,673,400 + $7,026,600

$14,700,000

2020

$152,870 (+6.3%)

$8,195,400 + $7,504,600

$15,700,000

2019

$143,776 (+14.0%)

$7,500,000 + $6,000,000

$13,500,000

2018

$126,137 (−0.6%)

$6,350,000 + $6,350,000

$12,700,000

2017

$126,875 (+37.2%)

$5,600,000 + $5,600,000

$11,200,000

2016

$92,469 (−4.8%)

$5,600,000 + $5,600,000

$11,200,000

2015

$97,109 (+0.6%)

$4,050,000 + $4,050,000

$8,100,000

2014

$96,560 (+30.7%)

$4,250,000 + $4,250,000

$8,500,000

2012

$73,867 (+0.4%)

$3,475,000 + $3,475,000

$6,950,000

2011

$73,564 (−16.6%)

$3,250,000 + $3,250,000

$6,500,000

2010

$88,243 (−9.2%)

$3,250,000 + $3,250,000

$6,500,000

2009

$97,168 (+0.4%)

$3,950,000 + $3,950,000

$7,900,000

2008

$96,789

$4,375,000 + $4,375,000

$8,750,000

Public record

Public record
Permits

Beds

Baths

6.5

Stories

Lot width

—

Lot depth

—

Lot size

1.99 Acres

Year renovated

1985

Finished Sq. Ft.

9,950

Unfinished Sq. Ft.

—

Total Sq. Ft.

9,950

Year built

1929

Style

Single Family Residential

County

San Mateo County

APN

030074100

Parking Spaces

—

Basement

—

Accessible

—

HOA Dues

—

Garage

—

Features

—

Last updated by owner on Jul 15, 2026.

Climate risks

1/10 Flood Factor

Minimal risk of a flood reaching the building in the next 30 years

1/10 Fire Factor

Unlikely to be in a wildfire in next 30 years

1/10 Heat Factor

1 days above 85° expected this year, 2 days in 30 years

1/10 Wind Factor

Minimal risk of severe winds over next 30 years

7/10 Air Factor

12 unhealthy days expected this year, 12 days in 30 years

Provided by First Street

Historical weather

Hillsborough, CA • 94010

Average low and high temperatures (°F)

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Sun exposure

85/ 100

Very good sunlight

Sunscore

There appears to be minimal shading by surrounding buildings, terrain, and vegetation.

9.9 hrs

5.7 hrs

JuneDecember

Provided by Shadowmap

Redfin Estimate for 3085 Ralston Ave

$14,182,222

$813K under list price of $15.0M

Nearby comparable homes

The Redfin Estimate uses 5 recent nearby sales, priced between $4.8M to $70.0M.

SOLD APR 27, 2026
$12,500,000 Last sold price
8 beds7.5 baths7,629 sq ft
1215 La Cumbre, Hillsborough, CA 94010
$209/sq ft
smaller lot
67 years newer
SOLD DEC 30, 2014
3935 RALSTON Ave, Hillsborough, CA 94010
$4,750,000 Last sold price
5 beds6 baths5,050 sq ft
3935 RALSTON Ave, Hillsborough, CA 94010
$488/sq ft
smaller lot
84 years newer
SOLD MAR 16, 2026
$8,000,000 Last sold price
5 beds4.5 baths6,780 sq ft
75 Eugenia Way, Hillsborough, CA 94010
$249/sq ft
smaller lot
59 years newer
SOLD AUG 6, 2026
$70,000,000 Last sold price
6 beds12 baths12,404 sq ft
3000 Ralston Ave, Hillsborough, CA 94010
$4214/sq ft
larger lot
84 years newer
SOLD APR 11, 2026
$19,800,000 Last sold price
6 beds10 baths14,093 sq ft
925 Seabury Rd, Hillsborough, CA 94010
$24/sq ft
smaller lot
80 years newer

Rental earnings

Est. $10,849 per month, based on comparable rentals

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