Off market apr 2012 for $1.3M

$3,664,513

Est. refi paymentEst. refi $9,154/mo

•

2,119

sq ft

21723 CASTLETON St, Cupertino, CA 95014

About this home

Single-familyProperty Type

1966Year Built

7,548 sq ftLot Size

$1,729Est. Price/Sq.Ft.

2 car garageParking

Listed by Warren Kohn •DRE #01012886 • Intero Real Estate Services

Contact: (408) 893-9339

Bought with Bharath Kumar Talluri •DRE #01138908 • Intero Real Estate Services

Redfin checked: a minute ago

•Source:MLSListings #ML81204803

Redfin Estimate

$3,664,513

$2.3M since sold in April 2012$12K since September

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 2.2% higher than the average sale price ($3.58M) of 5 comparable homes.

SOLD AUG 18, 2026
$4,080,000
A
4 beds3 baths2,119 sq ft
11113 Wilkinson Ave, Cupertino, CA 95014
SOLD JAN 12, 2026
$3,800,000
B
4 beds3 baths2,102 sq ft
11112 Wilkinson, Cupertino, CA 95014
Realty ONE Group Complete
SOLD JUN 15, 2026
$3,500,000
C
4 beds3 baths2,331 sq ft
1144 Elmsford Dr, Cupertino, CA 95014
SOLD SEP 28, 2026
$3,869,000
D
5 beds3 baths2,412 sq ft
21570 Edward Way, Cupertino, CA 95014
SOLD JUL 9, 2026
$2,675,000
E
4 beds3 baths1,659 sq ft
1041 November Dr, Cupertino, CA 95014

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Earn from this home

Sell

$2,767,126

Est. take-home

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Refinance

Est. cash available

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Rent

$6,534/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

104.8%

0.4% MoM

Median sale price

$2.9M

$151K MoM

Avg. days on market

16d

1 days MoM

Recently sold homes

3 MoM

New listings for sale

OPEN THU, 9:30AM TO 12:30PM
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EARLY ACCESS
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8130 Park Villa Cir, Cupertino, CA 95014
OPEN FRI, 4PM TO 7PM
$3,999,888
4 beds4 baths3,042 sq ft
22348 Mcclellan Rd, Cupertino, CA 95014
OPEN THU, 9:30AM TO 12:30PM
$4,799,000
5 beds3.5 baths3,618 sq ft
22551 Ricardo Rd, Cupertino, CA 95014
OPEN THU, 9:30AM TO 12:30PM
$2,495,000
3 beds2 baths1,622 sq ft
10534 Sterling Blvd, Cupertino, CA 95014
OPEN SAT, 1:30PM TO 4:30PM
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3 beds2 baths1,201 sq ft
854 Alderbrook Ln, Cupertino, CA 95014
$2,300,000
3 beds2 baths2,114 sq ft
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3D WALKTHROUGH
$2,599,999
4 beds3 baths1,820 sq ft
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LISTED BY REDFIN
$1,092,888
2 beds2 baths1,154 sq ft
10241 Nile Dr, Cupertino, CA 95014
VIDEO TOUR
$1,980,000
4 beds4 baths1,948 sq ft
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See all

Provided by Redfin

Sale history for 21723 CASTLETON St

Year

Property tax

Land + Additions

Assessment*

2025

$20,521 (+2.8%)

$1,367,265 + $341,810

$1,709,075

2024

$19,959 (+0.9%)

$1,340,456 + $335,108

$1,675,564

2023

$19,778 (+0.9%)

$1,314,173 + $328,538

$1,642,711

2022

$19,594 (+1.1%)

$1,288,405 + $322,097

$1,610,502

2021

$19,385 (+1.3%)

$1,263,143 + $315,782

$1,578,925

2020

$19,145 (+2.5%)

$1,238,376 + $309,591

$1,547,967

2019

$18,677 (+2.9%)

$1,225,678 + $306,417

$1,532,095

2018

$18,154 (+0.7%)

$1,201,646 + $300,409

$1,502,055

2017

$18,032 (+3.3%)

$1,154,986 + $288,745

$1,443,731

2016

$17,455 (+0.7%)

$1,154,986 + $288,745

$1,443,731

2015

$17,328 (+2.7%)

$1,132,340 + $283,084

$1,415,424

2014

$16,879 (+732.0%)

$1,093,485 + $273,371

$1,366,856

2012

$2,029 (+12.9%)

$1,088,544 + $272,136

$1,360,680

2011

$1,796 (+19.8%)

$23,340 + $80,001

$103,341

2010

$1,499

$22,883 + $78,433

$101,316

2009

$1,498 (−0.6%)

$22,712 + $77,847

$100,559

2008

$1,507

$22,320 + $76,502

$98,822

Tax history for 21723 CASTLETON St

Year

Property tax

Land + Additions

Assessment*

2025

$20,521 (+2.8%)

$1,367,265 + $341,810

$1,709,075

2024

$19,959 (+0.9%)

$1,340,456 + $335,108

$1,675,564

2023

$19,778 (+0.9%)

$1,314,173 + $328,538

$1,642,711

2022

$19,594 (+1.1%)

$1,288,405 + $322,097

$1,610,502

2021

$19,385 (+1.3%)

$1,263,143 + $315,782

$1,578,925

2020

$19,145 (+2.5%)

$1,238,376 + $309,591

$1,547,967

2019

$18,677 (+2.9%)

$1,225,678 + $306,417

$1,532,095

2018

$18,154 (+0.7%)

$1,201,646 + $300,409

$1,502,055

2017

$18,032 (+3.3%)

$1,154,986 + $288,745

$1,443,731

2016

$17,455 (+0.7%)

$1,154,986 + $288,745

$1,443,731

2015

$17,328 (+2.7%)

$1,132,340 + $283,084

$1,415,424

2014

$16,879 (+732.0%)

$1,093,485 + $273,371

$1,366,856

2012

$2,029 (+12.9%)

$1,088,544 + $272,136

$1,360,680

2011

$1,796 (+19.8%)

$23,340 + $80,001

$103,341

2010

$1,499

$22,883 + $78,433

$101,316

2009

$1,498 (−0.6%)

$22,712 + $77,847

$100,559

2008

$1,507

$22,320 + $76,502

$98,822

*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

7,548 Sq. Ft.

Year renovated

1966

Sq. Ft.

2,119

Year built

1966

Style

Single Family Residential

County

Santa Clara County

APN

35618069

Parking Spaces

—

Basement

—

Accessible

—

HOA Dues

—

Garage

—

Features

—

Last updated by owner on Aug 22, 2026.

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

Jul 19, 2019 • Final

Residential mechanical

Install a new mini split system.

HVAC

Jul 19, 2019 • Final

Residential re-roof

Remove existing shingles and install new presidential class A shingles on a residential building.

Roofing

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): 2
Garage (Maximum): 2
Parking Description: Attached Garage
Garage Spaces: 2

Interior

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

Bathroom Information
# of Baths (Full): 3
# of Baths (Minimum): 3
# of Baths (Maximum): 3
Bathroom Description: Shower Over Tub, Tubs, 2+ Stall Shower

Room Information
Formal Entry
Family Room Description: Separate Family Room
Dining Room Description: Formal Dining Room, Breakfast Room, Breakfast Bar, Eat in Kitchen
Kitchen Description: Dishwasher, Cooktop, Garbage Disposal, Refrigerator(s), Oven (Built-In)

Interior Features
Laundry: In Laundry Room
Flooring: Tile, Carpet (Wall-to-Wall), Vinyl/Linoleum

Fireplace Information
Fireplace Description: In Living Room, Wood-Burning, Fireplace Available

Heating & Cooling Information
Heating: Forced Air, Gas

Exterior

Exterior Features
View: Mountains
Roof: Fiberglass
Yard/Grounds: Patio(s), Sprinkler(s) (Front), Sprinkler(s) (Rear), Sprinkler(s) (Auto), Deck, Fenced

Building Information
Style: Traditional
Subclass: Single Family Home
Building Type: Detached
Exterior: Wood, Stucco
Concrete Perimeter and Slab
Building Height (Minimum): 2
Building Height (Maximum): 2

Property Features
Amenities: Double Pane Windows(s), High Ceiling
Communication: Cable TV Available
Living Sq. Ft.: 2,119

Property Information
Level (Street/Main): Bedroom(s)
Property Primary ID: 347730

Lot Information
Lot Description: Grade (Level)
Lot Size Area Minimum Units: Sq. Ft.
Lot Size Area Maximum Units: Sq. Ft.
Lot Size Source: Assessor
Zoning: R1

Utilities

Utility Information
Energy Features: Ceiling Insulation, Double Pane Windows
Sewer Septic: Sewer in Street, Sewer Connected

Water Information
Water: Heater (Gas), Public

Location

Multi-Unit Information
# of Stories: 2

School Information
Elementary School: Abraham Lincoln Elementary
Elementary School District: Cupertino Union
Middle School: John F. Kennedy Middle
High School: Monta Vista High
High School District: Fremont Union High

Public facts

Beds: 4
Baths: 3.0
Sq. Ft.: 2,119
Stories: 2.0
Lot Size: 7,548 square feet
Style: Single Family Residential
Year Built: 1966
Year Renovated: 1966
County: Santa Clara County
APN: 35618069

Home facts updated by county records on Aug 22, 2026

Other

Miscellaneous Information
Incorporated: Yes

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

$3.48M – $4.22M

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Home values near 21723 CASTLETON St

Data from public records.

Address	Redfin Estimate
21673 Castleton St, Cupertino, CA 4 Beds \| 3 Baths \| 2119 Sq. Ft.	$3,666,675
21713 Castleton St, Cupertino, CA 4 Beds \| 3 Baths \| 2055 Sq. Ft.	$3,460,190

Address	Redfin Estimate
21683 Castleton St, Cupertino, CA 5 Beds \| 3 Baths \| 2300 Sq. Ft.	$3,767,035
21743 Castleton St, Cupertino, CA 4 Beds \| 3 Baths \| 2934 Sq. Ft.	$4,200,885

Address	Redfin Estimate
21753 Castleton St, Cupertino, CA 5 Beds \| 3 Baths \| 2840 Sq. Ft.	$4,357,939
21703 Castleton St, Cupertino, CA 4 Beds \| 2 Baths \| 1888 Sq. Ft.	$3,589,278

Property information provided by MLSListings when last listed in 2012. 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 95014, CA

Sale history for 21723 CASTLETON St

Tax history for 21723 CASTLETON St

Public record

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 21723 CASTLETON St

More real estate resources