Google street view image for 21584 Castleton St, Cupertino, CA 95014

Off market

$3,705,610

•

3 ba

•

2,327

sq ft

21584 Castleton St, Cupertino, CA 95014

About this home

21584 Castleton St is a 2,327 square foot house on a 9,085 square foot lot with 4 bedrooms and 3 bathrooms. Based on Redfin's Cupertino data, we estimate the home's value is $3,705,610.

Single-familyProperty Type

1973Year Built

9,085 sq ftLot Size

$1,592Est. Price/Sq.Ft.

Source:Public Records

Redfin Estimate

$3,705,610

$55K since September

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 3.7% lower than the average sale price ($3.85M) of 6 comparable homes.

SOLD SEP 28, 2026
$3,869,000
A
5 beds3 baths2,412 sq ft
21570 Edward Way, Cupertino, CA 95014
SOLD AUG 18, 2026
$4,080,000
B
4 beds3 baths2,119 sq ft
11113 Wilkinson Ave, Cupertino, CA 95014
SOLD APR 10, 2026
$4,015,000
C
4 beds2.5 baths2,206 sq ft
21685 Regnart Rd, Cupertino, CA 95014
SOLD JUN 15, 2026
$3,500,000
D
4 beds3 baths2,331 sq ft
1144 Elmsford Dr, Cupertino, CA 95014
SOLD OCT 6, 2026
$3,610,000
E
4 beds2 baths1,998 sq ft
21629 Terrace Dr, Cupertino, CA 95014
SOLD OCT 6, 2026
$4,020,000
F
4 beds3.5 baths2,322 sq ft
10356 Tonita Way, Cupertino, CA 95014

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Earn from this home

Sell

$3,510,065

Est. take-home

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Rent

$6,319/mo

Redfin rental estimate

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Market trends in 95014, CA

Last updated September 2026

Buyer's Market

Seller's Market

Seller's market

Sale-to-List Price

104.9%

0.4% MoM

Median sale price

$2.9M

$149K MoM

Avg. days on market

16d

1 days MoM

Recently sold homes

5 MoM

New listings for sale

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5 beds3.5 baths3,618 sq ft
22551 Ricardo Rd, Cupertino, CA 95014
OPEN TODAY, 1PM TO 4PM
$2,495,000
3 beds2 baths1,622 sq ft
10534 Sterling Blvd, Cupertino, CA 95014
OPEN TODAY, 1:30PM TO 4:30PM
$2,698,000
3 beds2 baths1,201 sq ft
854 Alderbrook Ln, Cupertino, CA 95014
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$2,300,000
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See all

Provided by Redfin

Sale history for 21584 Castleton St

As the MLS and public records start to fill up, we'll list the details here.

Year

Property tax

Land + Additions

Assessment*

2025

$2,897 (+2.9%)

$29,895 + $127,112

$157,007

2024

$2,814 (+1.9%)

$29,309 + $124,620

$153,929

2023

$2,761 (−6.1%)

$28,735 + $122,177

$150,912

2022

$2,942 (+1.8%)

$28,172 + $119,782

$147,954

2021

$2,889 (+1.7%)

$27,620 + $117,434

$145,054

2020

$2,840 (+6.6%)

$27,079 + $115,132

$142,211

2019

$2,663 (+5.8%)

$26,802 + $113,952

$140,754

2018

$2,517 (+2.0%)

$26,277 + $111,718

$137,995

2017

$2,468 (+0.6%)

$25,257 + $107,381

$132,638

2016

$2,452 (+5.4%)

$25,257 + $107,381

$132,638

2015

$2,326 (+3.1%)

$24,762 + $105,276

$130,038

2014

$2,257 (+3.8%)

$23,914 + $101,664

$125,578

2012

$2,174 (+2.9%)

$23,806 + $101,205

$125,011

2011

$2,112 (+8.9%)

$23,340 + $99,221

$122,561

2010

$1,938

$22,883 + $97,276

$120,159

2009

$1,937 (+13.0%)

$22,712 + $96,549

$119,261

2008

$1,714

$22,320 + $94,882

$117,202

Tax history for 21584 Castleton St

Year

Property tax

Land + Additions

Assessment*

2025

$2,897 (+2.9%)

$29,895 + $127,112

$157,007

2024

$2,814 (+1.9%)

$29,309 + $124,620

$153,929

2023

$2,761 (−6.1%)

$28,735 + $122,177

$150,912

2022

$2,942 (+1.8%)

$28,172 + $119,782

$147,954

2021

$2,889 (+1.7%)

$27,620 + $117,434

$145,054

2020

$2,840 (+6.6%)

$27,079 + $115,132

$142,211

2019

$2,663 (+5.8%)

$26,802 + $113,952

$140,754

2018

$2,517 (+2.0%)

$26,277 + $111,718

$137,995

2017

$2,468 (+0.6%)

$25,257 + $107,381

$132,638

2016

$2,452 (+5.4%)

$25,257 + $107,381

$132,638

2015

$2,326 (+3.1%)

$24,762 + $105,276

$130,038

2014

$2,257 (+3.8%)

$23,914 + $101,664

$125,578

2012

$2,174 (+2.9%)

$23,806 + $101,205

$125,011

2011

$2,112 (+8.9%)

$23,340 + $99,221

$122,561

2010

$1,938

$22,883 + $97,276

$120,159

2009

$1,937 (+13.0%)

$22,712 + $96,549

$119,261

2008

$1,714

$22,320 + $94,882

$117,202

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

Zoning and permits

Zoning
Permits

R1-7.5

Single-Family Residential Zone

Single-family residence districts are intended to create, preserve and enhance areas suitable for detached dwellings in order to: Enhance the identity of residential neighborhoods; Ensure provision of light, air and a reasonable level of privacy to individual residential parcels; Ensure a reasonable level of compatibility in scale of structures within residential neighborhoods; and Reinforce the predominantly low-intensity setting in the community.

Permitted uses

Include but are not limited to:

Housing-Single unit
Housing-Senior
Housing-Other
Infrastructure

Property details

Interior

Fireplace Information
# of Fireplaces: 1
Has Fireplace

Room Information
# of Rooms: 8

Exterior

Exterior Information
Physical Condition: Good
Building Style Type: H-Shape
Construction Type: Wood
Building Construction Quality: Good
Roof Framing Type: Wood

Property Information
Subdivision Name: MONTEBELLO
Living Sq. Ft: 2,327
Ground Floor Sq. Ft: 2,135
Building Sq. Ft: 2,327
# of Stories: 1
Legal Description: TRACT 5081 MONTEBELLO BOOK 294 PAGE 24 LOT 22

Parking & Garage Information
Garage/Parking Sq. Ft: 428

Lot Information
# of Buildings: 1
Land Sq. Ft: 9,085
Legal Lot Number: 22
Municipality Name: CUPERTINO CITY
Acres: 0.2086
Depth Footage: 115
Front Footage: 79
Zoning Code: R1
County Use Description: RESID SINGLE FAMILY

Financial

Assessor Information
Assessment Year: 2026
Tax Area: CUPERTINO CITY

Public facts

Beds: 4
Baths: 3.0
Sq. Ft.: 2,327
Stories: 1.0
Lot Size: 9,085 square feet
Style: Single Family Residential
Year Built: 1973
Year Renovated: 1973
County: Santa Clara County
APN: 35620047

Home facts updated by county records on Aug 22, 2026

Around this home

Schools

Abraham Lincoln Elementary School

Public K-5 • Assigned • 0.5mi

9/10

John F. Kennedy Middle School

Public 6-8 • Assigned • 0.3mi

9/10

Monta Vista High School

Public 9-12 • Assigned • 0.5mi

10/10

Provided by GreatSchools

Lifestyle

Provided by Walk Score and Local Logic

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

4/10 Heat Factor

8 days above 95° expected this year, 17 days in 30 years

1/10 Wind Factor

Minimal risk of severe winds over next 30 years

8/10 Air Factor

16 unhealthy days expected this year, 17 days in 30 years

Provided by First Street

Historical weather

Cupertino, CA • 95014

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 4.9 hours in December, placing it above the U.S. average for solar exposure.

10.8 hrs

4.9 hrs

JuneDecember

Provided by Shadowmap

Estimated sale price

$3.52M – $4.26M

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Home values near 21584 Castleton St

Data from public records.

Address	Redfin Estimate
21583 Castleton Street, Cupertino, CA 4 Beds \| 3 Baths \| 2102 Sq. Ft.	$4,093,029
21594 Castleton Street, Cupertino, CA 5 Beds \| 3 Baths \| 2412 Sq. Ft.	$4,159,789

Address	Redfin Estimate
21603 Castleton Street, Cupertino, CA 3 Beds \| 3 Baths \| 2102 Sq. Ft.	$3,535,144
21574 Castleton Street, Cupertino, CA 4 Beds \| 2.5 Baths \| 2135 Sq. Ft.	$3,639,622

Address	Redfin Estimate
21604 Castleton Street, Cupertino, CA 4 Beds \| 3 Baths \| 2248 Sq. Ft.	$3,772,944
21593 Castleton Street, Cupertino, CA 5 Beds \| 3 Baths \| 2604 Sq. Ft.	$3,712,165

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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 95014, CA

Sale history for 21584 Castleton St

Tax history for 21584 Castleton St

Zoning and permits

Property details

Around this home

Schools

Lifestyle

Climate risks

Historical weather

Sun exposure

Nearby similar homes

New listings for sale in 95014

Home values near 21584 Castleton St

More real estate resources