OFF MARKET

Off Market May 2019 for $2.4M

$3,360,682

Est. refi paymentEst. refi $15,621/mo

•

2,700

sq ft

21 Avila Rd, San Mateo, CA 94402

About this home

Striking in its stature, this Colonial home is a proud representation of all the good things Aragon has to offer. Filled with charming nods to its 1930s history, this home has also been thoughtfully updated to accommodate the busy lifestyles of the modern family. Accents like crown and door moldings, pegged-hardwood flooring, charming wall sconces and a beautiful, wrap-around staircase blend seamlessly with modern touches like the updated and expanded kitchen-family room. A ground level guest bedroom compliments all the formal rooms on the main level of this home. While the private upstairs offers 2 more guest bedrooms, full bathroom and a large master en-suite. Walkable to all three award-winning public schools, Baywood Elementary, Borel Middle and Aragon High Schools as well as Central Park and Downtown with easy access to highways 92, 101 and 280 this house is ideally situated to take advantage of all the community offerings of San Mateo and the greater Peninsula.

Single-familyProperty Type

1937Year Built

5,000 sq ftLot Size

$1,245Est. Price/Sq.Ft.

1 car garageParking

Listed by Greg Damelio •DRE #01223334 • Compass

Contact: 650-245-8700

Bought with Robert R. Bredel •DRE #01493564 • Christie's International Real Estate Sereno

Redfin checked: 2 minutes ago

•Source:MLSListings #ML81744716

Redfin Estimate

$3,360,682

$938K since sold in May 2019$12K since August

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 13.3% higher than the average sale price ($2.97M) of 5 comparable homes.

SOLD JUN 17, 2026
$3,150,000
A
4 beds3 baths3,218 sq ft
1120 Palm Ave, San Mateo, CA 94401
SOLD JUL 30, 2026
$3,610,000
B
3 beds3 baths2,450 sq ft
401 Castilian Way, San Mateo, CA 94402
SOLD FEB 23, 2026
$1,900,000
C
4 beds3 baths2,232 sq ft
1502 S Delaware St, San Mateo, CA 94402
SOLD MAY 7, 2026
$3,500,000
D
4 beds2.5 baths2,340 sq ft
229 Aragon Blvd, San Mateo, CA 94402
SOLD AUG 11, 2026
$2,670,000
E
3 beds2 baths2,025 sq ft
1549 Locust St, San Mateo, CA 94402

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Earn from this home

Sell

$1,535,246

Est. take-home

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Refinance

Est. cash available

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Rent

$8,762/mo

Redfin rental estimate

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Market trends in 94402, CA

Last updated August 2026

Buyer's Market

Seller's Market

Seller's market

Sale-to-List Price

107.2%

1.0% MoM

Median sale price

$2.7M

$59K MoM

Avg. days on market

12d

0 days MoM

Recently sold homes

8 MoM

New listings for sale

$4,198,000
5 beds2.5 baths2,970 sq ft
769 Crescent Ave, San Mateo, CA 94402
OPEN TODAY, 10AM TO 12PM
$2,398,000
4 beds5 baths2,940 sq ft
1710-1712 Gum St, San Mateo, CA 94402
$2,788,000
4 beds3 baths2,944 sq ft
942 S Eldorado St, San Mateo, CA 94402
$4,488,000
4 beds3 baths2,668 sq ft
440 Hobart Ave, San Mateo, CA 94402
$1,195,000
3 beds1 bath1,935 sq ft
610 S Amphlett Blvd, San Mateo, CA 94402
See all

Provided by Redfin

Sale history for 21 Avila Rd

Year

Property tax

Land + Additions

Assessment*

2025

$32,508 (+1.2%)

$1,820,524 + $955,641

$2,776,165

2024

$32,133 (+1.2%)

$1,784,828 + $936,904

$2,721,732

2023

$31,747 (+1.1%)

$1,749,832 + $918,534

$2,668,366

2022

$31,415 (+1.9%)

$1,715,522 + $900,524

$2,616,046

2021

$30,817 (+3.6%)

$1,681,885 + $882,868

$2,564,753

2020

$29,738 (+366.6%)

$1,648,907 + $865,557

$2,514,464

2019

$6,374 (+5.7%)

$1,632,000 + $839,460

$2,471,460

2018

$6,029 (+0.5%)

$167,262 + $280,485

$447,747

2017

$6,002 (+4.0%)

$160,768 + $269,595

$430,363

2016

$5,769 (−2.0%)

$160,768 + $269,595

$430,363

2015

$5,885 (+1.6%)

$157,616 + $264,309

$421,925

2014

$5,795 (+9.3%)

$152,208 + $255,240

$407,448

2012

$5,304 (+6.4%)

$151,521 + $254,087

$405,608

2011

$4,984 (+1.9%)

$148,550 + $249,105

$397,655

2010

$4,891 (+0.5%)

$145,638 + $244,221

$389,859

2009

$4,866 (+1.9%)

$144,550 + $242,396

$386,946

2008

$4,777

$144,894 + $242,972

$387,866

Tax history for 21 Avila Rd

Year

Property tax

Land + Additions

Assessment*

2025

$32,508 (+1.2%)

$1,820,524 + $955,641

$2,776,165

2024

$32,133 (+1.2%)

$1,784,828 + $936,904

$2,721,732

2023

$31,747 (+1.1%)

$1,749,832 + $918,534

$2,668,366

2022

$31,415 (+1.9%)

$1,715,522 + $900,524

$2,616,046

2021

$30,817 (+3.6%)

$1,681,885 + $882,868

$2,564,753

2020

$29,738 (+366.6%)

$1,648,907 + $865,557

$2,514,464

2019

$6,374 (+5.7%)

$1,632,000 + $839,460

$2,471,460

2018

$6,029 (+0.5%)

$167,262 + $280,485

$447,747

2017

$6,002 (+4.0%)

$160,768 + $269,595

$430,363

2016

$5,769 (−2.0%)

$160,768 + $269,595

$430,363

2015

$5,885 (+1.6%)

$157,616 + $264,309

$421,925

2014

$5,795 (+9.3%)

$152,208 + $255,240

$407,448

2012

$5,304 (+6.4%)

$151,521 + $254,087

$405,608

2011

$4,984 (+1.9%)

$148,550 + $249,105

$397,655

2010

$4,891 (+0.5%)

$145,638 + $244,221

$389,859

2009

$4,866 (+1.9%)

$144,550 + $242,396

$386,946

2008

$4,777

$144,894 + $242,972

$387,866

*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
Permits

Beds

Baths

Stories

Lot width

—

Lot depth

—

Lot size

5,000 Sq. Ft.

Year renovated

1937

Sq. Ft.

2,640

Year built

1937

Style

Single Family Residential

County

San Mateo County

APN

034263150

Parking Spaces

—

Basement

—

Accessible

—

HOA Dues

—

Garage

—

Features

—

Last updated by owner on Sep 2, 2026.

R1C

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

Sep 11, 2023 • Final

Electrical, plumbing & mechanical - plumbing

Replace the sewer line from the foundation to the main in the street using trenchless sewer replacement methods.

Plumbing

Sep 5, 2023 • Final

Public works - encroachment permits (general construction)

Replace the sewer lateral from the property line to the main line within the street right of way.

Plumbing

Permit history is from public records and may be incomplete or inaccurate. Redfin and its agents make no representations about the property condition or permit status. Buyers should independently verify all information.

Property details

Parking

Parking Information
Garage (Minimum): 1
Garage (Maximum): 1
Parking Description: Attached Garage, Off-Street Parking
Garage Spaces: 1

Interior

Virtual Tour

Bedroom Information
# of Bedrooms (Minimum): 4
# of Bedrooms (Maximum): 4
Bedrooms: Ground Floor Bedroom

Bathroom Information
# of Baths (Full): 3
Bathroom Description: Double Sinks, Shower and Tub, Stall Shower, Tub in Master Bedroom

Room Information
Attic, Formal Entry, Storage
Family Room Description: Kitchen/Family Room Combo
Dining Room Description: Breakfast Bar, Breakfast Nook, Dining Bar, Formal Dining Room
Kitchen Description: Countertop (Granite), Garbage Disposal, Microwave, Oven (Built-In), Oven Range (Gas), Refrigerator(s)

Interior Features
Laundry: Inside, Washer/Dryer
Flooring: Carpet, Hardwood, Tile

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

Heating & Cooling Information
Heating: Central Forced Air

Exterior

Exterior Features
View: Neighborhood
Fencing: Fenced Back, Gate, Wood
Roof: Composition

Building Information
Style: Colonial
Subclass: Single Family Home
Building Type: Detached
Construction Type: Wood Frame
Concrete Perimeter

Property Features
Living Sq. Ft.: 2,700

Property Information
Property Primary ID: 621231

Lot Information
Lot Acres: 0.1148
Lot Description: Grade (Level)
Lot Size Area Minimum Units: Sq. Ft.
Lot Size Area Maximum Units: Sq. Ft.
Lot Size Source: Assessor
Zoning: R10006

Financial

Tax/Assessment Information
City Transfer Tax: Yes

Utilities

Utility Information
Sewer Septic: Sewer (Public)
Utilities: Public Utilities

Water Information
Water: Public

Location

Multi-Unit Information
# of Stories: 2

School Information
Elementary School: Baywood Elementary
Elementary School District: San Mateo-Foster City Elementary
Middle School: Borel Middle
High School: Aragon High
High School District: San Mateo Union High

Public facts

Beds: 4
Baths: 3.0
Sq. Ft.: 2,640
Stories: 1.0
Lot Size: 5,000 square feet
Style: Single Family Residential
Year Built: 1937
Year Renovated: 1937
County: San Mateo County
APN: 034263150

Home facts updated by county records on Sep 2, 2026

Other

Miscellaneous Information
Incorporated: Yes

Around this home

Schools

Baywood Elementary School

Public K-5 • Assigned • 0.7mi

7/10

Borel Middle School

Public 6-8 • Assigned • 0.5mi

8/10

Aragon High School

Public 9-12 • Assigned • 0.7mi

10/10

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
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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 86° expected this year, 15 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 • 94402

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 10.8 hours in June and 5 hours in December, placing it above the U.S. average for solar exposure.

10.8 hrs

5 hrs

JuneDecember

Provided by Shadowmap

Estimated sale price

$3.19M – $3.87M

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Home values near 21 Avila Rd

Data from public records.

Address	Redfin Estimate
23 Avila Rd, San Mateo, CA 3 Beds \| 3 Baths \| 1240 Sq. Ft.	$2,086,499
8 Avila Rd, San Mateo, CA 5 Beds \| 3 Baths \| 3700 Sq. Ft.	$1,908,299

Address	Redfin Estimate
39 Avila Rd, San Mateo, CA 3 Beds \| 2.5 Baths \| 2000 Sq. Ft.	$2,538,087
36 Avila Rd, San Mateo, CA 4 Beds \| 3 Baths \| 2500 Sq. Ft.	$3,208,119

Address	Redfin Estimate
35 Avila Rd, San Mateo, CA 2 Beds \| 1 Baths \| 1380 Sq. Ft.	$2,339,809
27 Avila Rd, San Mateo, CA 3 Beds \| 2 Baths \| 2460 Sq. Ft.	$3,648,939

Property information provided by MLSListings when last listed in 2019. This data may not match . Learn more.

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GreatSchools Ratings provided by GreatSchools.org.

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About this home

Redfin Estimate

Earn from this home

Market trends in 94402, CA

Sale history for 21 Avila Rd

Tax history for 21 Avila 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 94402

Home values near 21 Avila Rd

More real estate resources