OFF MARKET

Off Market Dec 2021 for $4.5M

$4,155,264

Est. refi paymentEst. refi $29,012/mo

•

2,470

sq ft

20 Warren Rd, San Mateo, CA 94401

About this home

Single-familyProperty Type

1956Year Built

0.36 acresLot Size

$1,682Est. Price/Sq.Ft.

2 car garageParking

Listed by Theresa Aiello •DRE #00742609 • Compass

Contact: 650-642-0678

Bought with Mae Chang •DRE #00850044 • MJC Realty

Redfin checked: a minute ago

•Source:MLSListings #ML81870037

Redfin Estimate

$4,155,264

$345K since sold in December 2021$111K since August

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 2.2% lower than the average sale price ($4.25M) of 6 comparable homes.

SOLD JUN 5, 2026
$4,750,000
A
3 beds2.5 baths2,510 sq ft
165 Pepper Ave, Burlingame, CA 94010
SOLD JUN 26, 2026
$4,200,000
B
3 beds3 baths2,230 sq ft
43 Ericson Rd, San Mateo, CA 94402
SOLD JUL 31, 2026
$3,760,000
C
4 beds3.5 baths2,590 sq ft
605 Barroilhet Ave, San Mateo, CA 94402
SOLD JUN 5, 2026
$4,150,000
D
3 beds2.5 baths2,740 sq ft
200 Occidental Ave, Burlingame, CA 94010
SOLD MAR 11, 2026
$4,225,000
E
3 beds2.5 baths2,659 sq ft
195 Warren Rd, San Mateo, CA 94401
SOLD MAR 27, 2026
$4,410,000
F
3 beds3 baths2,895 sq ft
106 Pepper Ave, Burlingame, CA 94010

Claim this home to receive a free report every month with insights on the changing estimate.

Earn from this home

Sell

$661,113

Est. take-home

List your home with Redfin and save $20,776

Refinance

Est. cash available

Get cash now or lower your monthly rate

Rent

$6,903/mo

Redfin rental estimate

List your home for rent

Market trends in 94401, CA

Last updated August 2026

Buyer's Market

Seller's Market

Seller's market

Sale-to-List Price

104.9%

0.8% MoM

Median sale price

$1.3M

$32K MoM

Avg. days on market

25d

3 days MoM

Recently sold homes

2 MoM

New listings for sale

EARLY ACCESS
$748,000
2 beds2 baths1,020 sq ft
240 N Bayshore Blvd #315, San Mateo, CA 94401
OPEN SAT, 1PM TO 4PM
$1,398,000
3 beds2 baths1,372 sq ft
1625 Cottage Grove Ave, San Mateo, CA 94401
OPEN SUN, 2PM TO 4PM
$2,988,000
3 beds3 baths3,116 sq ft
555 Laurel Ave #122, San Mateo, CA 94401
$749,000
2 beds2 baths1,200 sq ft
1 Baldwin Ave #609, San Mateo, CA 94401
3D WALKTHROUGH
$746,900
2 beds1 bath1,032 sq ft
808 Laurel Ave #202, San Mateo, CA 94401
$1,398,000
3 beds2 baths1,080 sq ft
1546 Maxine Ave, San Mateo, CA 94401
3D WALKTHROUGH
$1,298,888
2 beds2 baths1,400 sq ft
216 8th Ave, San Mateo, CA 94401
3D WALKTHROUGH
$1,298,000
2 beds2 baths1,680 sq ft
35 9th Ave #5, San Mateo, CA 94401
REDFIN OPEN TODAY, 4PM TO 7PM
$900,000
2 beds2 baths1,195 sq ft
153 N N San Mateo Dr #304, San Mateo, CA 94401
$4,998,000
12 beds12 baths7,756 sq ft
1101 Tilton Ave, San Mateo, CA 94401
See all

Provided by Redfin

Sale history for 20 Warren Rd

Date

Event

Price

MLSListings #ML81870037

Dec 10, 2021

Sold

$4,500,000

$1,822/sq ft

Dec 1, 2021

Pending

—

Nov 12, 2021

Listed

$3,398,000

$1,376/sq ft

Public Records

Jul 11, 2000

Sold

$1,401,000

$567/sq ft

MLSListings #ML80006777

Jul 11, 2000

Listing Removed

—

Mar 7, 2000

Sold

$1,401,000

$567/sq ft

Feb 27, 2000

Listed

$1,199,000

$485/sq ft

Public Records

Dec 31, 1998

Sold

$950,000

$385/sq ft

MLSListings #ML89843670

Dec 31, 1998

Listing Removed

—

Dec 8, 1998

Sold

$950,000

$385/sq ft

Sep 17, 1998

Listed

$980,000

$397/sq ft

Public Records

Jul 13, 1989

Sold

$740,000

$300/sq ft

Public Records

Jan 31, 1989

Sold

$620,000

$251/sq ft

Year

Property tax

Land + Additions

Assessment*

2025

$39,556 (−8.4%)

$2,529,500 + $828,500

$3,358,000

2024

$43,192 (+1.8%)

$2,529,500 + $828,500

$3,358,000

2023

$42,415 (−24.7%)

$3,526,956 + $1,154,844

$4,681,800

2022

$56,356 (+140.2%)

$2,632,000 + $862,000

$3,494,000

2021

$23,461 (−1.0%)

$3,390,000 + $1,110,000

$4,500,000

2020

$23,704 (+4.2%)

$975,158 + $975,158

$1,950,316

2019

$22,740 (+4.7%)

$965,159 + $965,159

$1,930,318

2018

$21,715 (+3.2%)

$946,235 + $946,235

$1,892,470

2017

$21,040 (+0.4%)

$909,493 + $909,493

$1,818,986

2016

$20,958 (+3.0%)

$909,493 + $909,493

$1,818,986

2015

$20,340 (−0.9%)

$891,660 + $891,660

$1,783,320

2014

$20,533 (+7.4%)

$861,063 + $861,063

$1,722,126

2012

$19,110 (+2.1%)

$857,172 + $857,172

$1,714,344

2011

$18,712 (+1.0%)

$840,365 + $840,365

$1,680,730

2010

$18,535 (+0.4%)

$823,888 + $823,888

$1,647,776

2009

$18,457 (+1.5%)

$817,731 + $817,731

$1,635,462

2008

$18,189

$819,674 + $819,674

$1,639,348

Tax history for 20 Warren Rd

Year

Property tax

Land + Additions

Assessment*

2025

$39,556 (−8.4%)

$2,529,500 + $828,500

$3,358,000

2024

$43,192 (+1.8%)

$2,529,500 + $828,500

$3,358,000

2023

$42,415 (−24.7%)

$3,526,956 + $1,154,844

$4,681,800

2022

$56,356 (+140.2%)

$2,632,000 + $862,000

$3,494,000

2021

$23,461 (−1.0%)

$3,390,000 + $1,110,000

$4,500,000

2020

$23,704 (+4.2%)

$975,158 + $975,158

$1,950,316

2019

$22,740 (+4.7%)

$965,159 + $965,159

$1,930,318

2018

$21,715 (+3.2%)

$946,235 + $946,235

$1,892,470

2017

$21,040 (+0.4%)

$909,493 + $909,493

$1,818,986

2016

$20,958 (+3.0%)

$909,493 + $909,493

$1,818,986

2015

$20,340 (−0.9%)

$891,660 + $891,660

$1,783,320

2014

$20,533 (+7.4%)

$861,063 + $861,063

$1,722,126

2012

$19,110 (+2.1%)

$857,172 + $857,172

$1,714,344

2011

$18,712 (+1.0%)

$840,365 + $840,365

$1,680,730

2010

$18,535 (+0.4%)

$823,888 + $823,888

$1,647,776

2009

$18,457 (+1.5%)

$817,731 + $817,731

$1,635,462

2008

$18,189

$819,674 + $819,674

$1,639,348

*Taxable value of land and structures on it ("additions") is determined regularly by local assessors and does not affect market price.

Public record

Public record
Zoning

Beds

Baths

Stories

Lot width

—

Lot depth

—

Lot size

0.36 Acres

Year renovated

1956

Sq. Ft.

2,470

Year built

1956

Style

Single Family Residential

County

San Mateo County

APN

032061030

Parking Spaces

—

Basement

—

Accessible

—

HOA Dues

—

Garage

—

Features

—

Last updated by owner on Jul 15, 2026.

R1A

Single-Family Residence Districts

The R1 Single-Family Residence Districts are intended to create, preserve and enhance areas suitable for single-family dwellings with a substantial presence of open space and opportunities for outdoor living. The R1 districts are intended to protect the character and variety of neighborhoods, preserve privacy and prevent burdens on public facilities, while allowing reasonable housing opportunities for families.

Permitted uses

Include but are not limited to:

Day care facility
Housing-Single unit
Housing-Mobile home park

Property details

Parking

Parking Information
Garage (Minimum): 2
Garage (Maximum): 2
Parking Description: Attached Garage, Electric Gate, Enclosed, Gate/Door Opener
Garage Spaces: 2
Parking Spaces: 2

Interior

Bedroom Information
# of Bedrooms (Minimum): 3
# of Bedrooms (Maximum): 3
Bedrooms: More than One Bedroom on Ground Floor, Primary Suite/Retreat, Walk-In Closet

Bathroom Information
# of Baths (Full): 2
# of Baths (1/2): 1
Bathroom Description: Double Sinks, Full on Ground Floor, Primary - Oversized Tub, Primary (Stall Shower(s)), Steam Shower

Room Information
Family Room Description: Separate Family Room
Dining Room Description: Breakfast Nook, Formal Dining Room
Kitchen Description: Countertop - Quartz, Dishwasher, Exhaust Fan, Garbage Disposal, Hood Over Range, Ice Maker, Oven (Gas), Oven Range (Built-In, Gas), Refrigerator(s), Trash Compactor, Warming Drawer

Interior Features
Laundry: Electricity Hookup (220V), In Utility Room, Washer/Dryer
Flooring: Hardwood, Laminate, Tile

Fireplace Information
Has Fireplace
Fireplace Description: In Family Room, Gas Log, Gas Starter, In Living Room
Fireplaces (Minimum): 2

Heating & Cooling Information
Cooling: Central Forced Air, Multi-Zone
Heating: Central Forced Air (Gas), Heating (2+ Zones)

Exterior

Exterior Features
Roof: Shingle

Building Information
Subclass: Single Family Home
Building Type: Detached
Construction Type: Stucco, Wood Frame
Concrete Perimeter

Property Features
Amenities: Bay Window, Vaulted Ceiling, Walk-In Closet, Wet Bar
Living Sq. Ft.: 2,470

Property Information
Property Primary ID: 154348

Lot Information
Lot Acres: 0.3635
Lot Description: Grade (Mostly Level)
Lot Size Area Minimum Units: Sq. Ft.
Lot Size Area Maximum Units: Sq. Ft.
Lot Size Source: Assessor
Zoning: R10010

Financial

Tax/Assessment Information
City Transfer Tax: Yes

Utilities

Utility Information
Sewer Septic: Sewer Connected
Utilities: Public Utilities

Water Information
Water: Public

Location

Multi-Unit Information
# of Stories: 1

School Information
Elementary School District: San Mateo-Foster City Elementary
High School District: San Mateo Union High

Public facts

Beds: 3
Baths: 3.0
Sq. Ft.: 2,470
Stories: 1.0
Lot Size: 0.36 acres
Style: Single Family Residential
Year Built: 1956
Year Renovated: 1956
County: San Mateo County
APN: 032061030

Home facts updated by county records on Jul 15, 2026

Around this home

Schools

San Mateo Park Elementary School

Public K-5 • Assigned • 0.3mi

2/10

Borel Middle School

Public 6-8 • Assigned • 2.0mi

8/10

San Mateo High School

Public 9-12 • Assigned • 0.7mi

9/10

Provided by GreatSchools

Lifestyle

Provided by Walk Score and Local Logic

Local insights from Redfin agents

San Mateo stayed one of the Peninsula's busiest markets. Homes averaged 110% of asking price, and buyers continue to compete for updated homes in neighborhoods like Aragon, Baywood and Beresford Park.
1 month ago • San Mateo
Sasai Zhang
Redfin Premier agent
182 deals
Was this helpful?

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

2/10 Heat Factor

7 days above 85° expected this year, 16 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

San Mateo, CA • 94401

Average low and high temperatures (°F)

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Sun exposure

In this area, properties receive around 10.5 hours in June and 5 hours in December, placing it above the U.S. average for solar exposure.

10.5 hrs

5 hrs

JuneDecember

Provided by Shadowmap

Estimated sale price

$3.95M – $4.78M

Reach more buyers when you sell with Redfin. Save up to $41,553 in fees. 3 minutes to get started.

Need the cash from your home fast? Sell to .

Nearby similar homes

3D WALKTHROUGH

$2,250,000

3 beds2 baths1,610 sq ft

508 Maple St, San Mateo, CA 94402

3D WALKTHROUGH

$11,800,000

6 beds7 baths6,430 sq ft

280 Uplands Dr, Hillsborough, CA 94010

$1,900,000

Land— sq ft

23 S Idaho, San Mateo, CA 94401

HOT HOME

$1,088,000

2 beds1 bath1,270 sq ft

619 S Eldorado St, San Mateo, CA 94402

$1,828,000

3 beds4 baths2,550 sq ft

664 N El Camino Real, San Mateo, CA 94401

$11,000,000

5 beds6 baths4,700 sq ft

433 El Centro Rd, Hillsborough, CA 94010

New listings for sale in 94401

EARLY ACCESSCOLDWELL BANKER REALTY COMING SOON

$748,000

2 beds2 baths1,020 sq ft

240 N Bayshore Blvd #315, San Mateo, CA 94401

OPEN SAT, 1PM TO 4PMVIDEO TOUR

$1,398,000

3 beds2 baths1,372 sq ft

1625 Cottage Grove Ave, San Mateo, CA 94401

OPEN SUN, 2PM TO 4PM

$2,988,000

3 beds3 baths3,116 sq ft

555 Laurel Ave #122, San Mateo, CA 94401

$749,000

2 beds2 baths1,200 sq ft

1 Baldwin Ave #609, San Mateo, CA 94401

3D WALKTHROUGH

$746,900

2 beds1 bath1,032 sq ft

808 Laurel Ave #202, San Mateo, CA 94401

$1,398,000

3 beds2 baths1,080 sq ft

1546 Maxine Ave, San Mateo, CA 94401

3D WALKTHROUGH

$1,298,888

2 beds2 baths1,400 sq ft

216 8th Ave, San Mateo, CA 94401

3D WALKTHROUGH

$1,298,000

2 beds2 baths1,680 sq ft

35 9th Ave #5, San Mateo, CA 94401

REDFIN OPEN TODAY, 4PM TO 7PM3D WALKTHROUGH

$900,000

2 beds2 baths1,195 sq ft

153 N N San Mateo Dr #304, San Mateo, CA 94401

Home values near 20 Warren Rd

Data from public records.

Address	Redfin Estimate
110 Warren Rd, San Mateo, CA 6 Beds \| 4.5 Baths \| 4960 Sq. Ft.	$6,015,766
114 Warren Rd, San Mateo, CA 5 Beds \| 3 Baths \| 3530 Sq. Ft.	$4,828,929

Address	Redfin Estimate
88 Warren Rd, San Mateo, CA 4 Beds \| 5.5 Baths \| 4339 Sq. Ft.	$6,697,868
4 Warren Rd, San Mateo, CA 4 Beds \| 2 Baths \| 3450 Sq. Ft.	—

Address	Redfin Estimate
12 Warren Rd, San Mateo, CA 3 Beds \| 3 Baths \| 2010 Sq. Ft.	$2,954,195
25 Barroilhet Ave, San Mateo, CA 5 Beds \| 2.5 Baths \| 3157 Sq. Ft.	$3,524,453

Property information provided by MLSListings when last listed in 2021. This data may not match . Learn more.

Download the Redfin App on the Apple App Store

Download the Redfin App from the Google Play Store

Join us

Become an Agent

Get referrals

Careers

Find homes faster

About us

Find us

Subsidiaries

Affiliated Business

Countries

United States

Canada

Updated September 2025: By searching, you agree to the Terms of Use, and Privacy Policy.

Do not sell or share my personal information.

REDFIN and all REDFIN variants, WALK SCORE, and the R logos, are trademarks of Redfin Corporation, registered or pending in the USPTO.

California DRE #01521930

Redfin is licensed to do business in New York as Redfin Real Estate. NY Standard Operating Procedures

New Mexico Real Estate Licenses

TREC: Info About Brokerage Services, Consumer Protection Notice

All mortgage lending products and information are provided by Rocket Mortgage, LLC | NMLS #3030; www.NMLSConsumerAccess.org. Licensed in 50 states. This site is not authorized by the New York State Department of Financial Services for mortgage solicitation or loan applications activities related to properties located in the State of New York.

Redfin Corporation is an affiliated business of Rocket Limited Partnership. Each company, and their subsidiaries, are separate legal entities operated and managed through its own management and governance structures.

If you are using a screen reader, or having trouble reading this website, please call Redfin Customer Support for help at 1-844-759-7732.

REDFIN IS COMMITTED TO AND ABIDES BY THE FAIR HOUSING ACT AND EQUAL OPPORTUNITY ACT. READ REDFIN'S FAIR HOUSING POLICY AND THE NEW YORK STATE FAIR HOUSING NOTICE.

GreatSchools Ratings provided by GreatSchools.org.

94010 homes for sale
94402 homes for sale
94403 homes for sale
94404 homes for sale
94002 homes for sale

Houses for rent in San Mateo	Agents near me	Irvine, CA homes for sale	San Mateo Housing Market
Houses for sale near me	San Diego, CA homes for sale	Fremont, CA homes for sale
Land for sale near me	San Francisco, CA homes for sale	Pasadena, CA homes for sale
Open Houses near me	Los Angeles, CA homes for sale	San Mateo Property Records
Condos for sale near me	San Jose, CA homes for sale	CA New Listings

San Jose homes for sale
San Francisco homes for sale
Fremont homes for sale

Central San Mateo homes for sale
Northwest Heights homes for sale
San Mateo Park homes for sale

About this home

Redfin Estimate

Earn from this home

Market trends in 94401, CA

Sale history for 20 Warren Rd

Tax history for 20 Warren Rd

Public record

Property details

Around this home

Schools

Lifestyle

Local insights from Redfin agents

Climate risks

Historical weather

Sun exposure

Nearby similar homes

New listings for sale in 94401

Home values near 20 Warren Rd

More real estate resources