Off market sep 1998 for $725K

$3,637,093

Est. refi paymentEst. refi $4,576/mo

•

2,119

sq ft

21573 CASTLETON St, Cupertino, CA 95014

About this home

Single-familyProperty Type

7,500 sq ftLot Size

$1,716Est. Price/Sq.Ft.

2 car garageParking

Listed by Abby Ahrens •DRE #00325241 • Cupertino Properties

Bought with Richard Chung • Century 21-El Camino

Redfin checked: 2 minutes ago

•Source:MLSListings #ML89831280

Redfin Estimate

$3,637,093

$2.9M since sold in September 1998$44K since September

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 1.2% higher than the average sale price ($3.59M) 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 OCT 6, 2026
$3,610,000
B
4 beds2 baths1,998 sq ft
21629 Terrace Dr, Cupertino, CA 95014
SOLD JAN 12, 2026
$3,800,000
C
4 beds3 baths2,102 sq ft
11112 Wilkinson, Cupertino, CA 95014
Realty ONE Group Complete
SOLD JUL 22, 2026
$2,980,000
D
4 beds2 baths1,515 sq ft
7933 Cranberry Cir, Cupertino, CA 95014
SOLD JUN 15, 2026
$3,500,000
E
4 beds3 baths2,331 sq ft
1144 Elmsford Dr, Cupertino, CA 95014

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Earn from this home

Sell

$3,382,146

Est. take-home

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Refinance

Est. cash available

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Rent

$6,161/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

105.4%

+0.5% MoM

Median sale price

$2.8M

$11K MoM

Avg. days on market

13d

3 days MoM

Recently sold homes

1 MoM

New listings for sale

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OPEN SUN, 2PM TO 4:30PM
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OPEN THU, 10:30AM TO 12:15PM
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OPEN FRI, 5PM TO 7PM
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4 beds3.5 baths3,040 sq ft
11008 Sycamore Dr, Cupertino, CA 95014
OPEN SAT, 1:30PM TO 4PM
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VIDEO TOUR
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OPEN SAT, 1:30PM TO 4PM
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VIDEO TOUR
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4 beds4 baths2,436 sq ft
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OPEN SUN, 11AM TO 2:30PM
$3,999,888
4 beds4 baths3,042 sq ft
22348 Mcclellan Rd, Cupertino, CA 95014
OPEN SAT, 1PM TO 3PM
$4,799,000
5 beds3.5 baths3,618 sq ft
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See all

Provided by Redfin

Sale history for 21573 CASTLETON St

Year

Property tax

Land + Additions

Assessment*

2025

$14,250 (+2.8%)

$879,483 + $279,828

$1,159,311

2024

$13,858 (+1.0%)

$862,239 + $274,342

$1,136,581

2023

$13,722 (+0.4%)

$845,333 + $268,963

$1,114,296

2022

$13,667 (+1.1%)

$828,758 + $263,690

$1,092,448

2021

$13,513 (+1.3%)

$812,508 + $258,520

$1,071,028

2020

$13,340 (+2.6%)

$796,577 + $253,451

$1,050,028

2019

$13,005 (+3.1%)

$788,410 + $250,853

$1,039,263

2018

$12,615 (+0.8%)

$772,951 + $245,935

$1,018,886

2017

$12,519 (+3.4%)

$742,938 + $236,386

$979,324

2016

$12,112 (+0.8%)

$742,938 + $236,386

$979,324

2015

$12,014 (+2.7%)

$728,371 + $231,751

$960,122

2014

$11,700 (+2.5%)

$703,378 + $223,799

$927,177

2012

$11,411 (+4.2%)

$700,200 + $222,788

$922,988

2011

$10,950 (+1.9%)

$686,471 + $218,420

$904,891

2010

$10,751

$673,011 + $214,138

$887,149

2009

$10,747 (+6.2%)

$667,982 + $212,538

$880,520

2008

$10,122

$656,441 + $208,866

$865,307

Tax history for 21573 CASTLETON St

Year

Property tax

Land + Additions

Assessment*

2025

$14,250 (+2.8%)

$879,483 + $279,828

$1,159,311

2024

$13,858 (+1.0%)

$862,239 + $274,342

$1,136,581

2023

$13,722 (+0.4%)

$845,333 + $268,963

$1,114,296

2022

$13,667 (+1.1%)

$828,758 + $263,690

$1,092,448

2021

$13,513 (+1.3%)

$812,508 + $258,520

$1,071,028

2020

$13,340 (+2.6%)

$796,577 + $253,451

$1,050,028

2019

$13,005 (+3.1%)

$788,410 + $250,853

$1,039,263

2018

$12,615 (+0.8%)

$772,951 + $245,935

$1,018,886

2017

$12,519 (+3.4%)

$742,938 + $236,386

$979,324

2016

$12,112 (+0.8%)

$742,938 + $236,386

$979,324

2015

$12,014 (+2.7%)

$728,371 + $231,751

$960,122

2014

$11,700 (+2.5%)

$703,378 + $223,799

$927,177

2012

$11,411 (+4.2%)

$700,200 + $222,788

$922,988

2011

$10,950 (+1.9%)

$686,471 + $218,420

$904,891

2010

$10,751

$673,011 + $214,138

$887,149

2009

$10,747 (+6.2%)

$667,982 + $212,538

$880,520

2008

$10,122

$656,441 + $208,866

$865,307

*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

7,500 Sq. Ft.

Year renovated

1966

Sq. Ft.

2,119

Year built

1966

Style

Single Family Residential

County

Santa Clara County

APN

35618057

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 electrical

Install new recessed lights.

Electrical

Jul 19, 2019 • Final

Residential mechanical

Replace the furnace and air conditioner in a residential building.

HVAC

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, Gate/Door Opener
Garage Spaces: 2

Interior

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

Bathroom Information
# of Baths (Full): 2
# of Baths (1/2): 1
# of Baths (Minimum): 3
# of Baths (Maximum): 3
Bathroom Description: Shower Over Tub, Tubs, Stall Shower

Room Information
Family Room Description: Separate Family Room
Dining Room Description: Formal Dining Room
Kitchen Description: Dishwasher, Cooktop, Garbage Disposal, Microwave, Oven (Built-In)

Interior Features
Laundry: In Laundry Room, 220 Volt Outlet
Flooring: Hardwood (Partial), Carpet (Wall-to-Wall), Vinyl/Linoleum

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

Heating & Cooling Information
Heating: Forced Air

Exterior

Exterior Features
View: Local/Neighborhood
Roof: Shingle, Composition
Yard/Grounds: Sprinkler(s) (Front), Sprinkler(s) (Auto), Deck

Building Information
Builder Architect: DITZ-CRANE
Style: Ranch
Subclass: Single Family Home
Building Type: Detached
Exterior: Siding (Vinyl), Wood
Concrete Perimeter
Building Height (Minimum): 2
Building Height (Maximum): 2

Property Features
Living Sq. Ft.: 2,119

Property Information
Level (Street/Main): Bedroom(s)
Property Primary ID: 470274

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

Financial

Tax/Assessment Information
City Transfer Tax: No

Utilities

Utility Information
Energy Features: Ceiling Insulation, Walls Insulated
Sewer Septic: Sewer in Street, Sewer Connected

Water Information
Water: 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: 3
Baths: 3.0
Sq. Ft.: 2,119
Stories: 1.0
Lot Size: 7,500 square feet
Style: Single Family Residential
Year Built: 1966
Year Renovated: 1966
County: Santa Clara County
APN: 35618057

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

$3.46M – $4.18M

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Home values near 21573 CASTLETON St

Data from public records.

Address	Redfin Estimate
21584 Castleton Street, Cupertino, CA 4 Beds \| 3 Baths \| 2327 Sq. Ft.	$3,705,610
21604 Castleton Street, Cupertino, CA 4 Beds \| 3 Baths \| 2248 Sq. Ft.	$3,772,944

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

Property information provided by MLSListings when last listed in 1998. 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 21573 CASTLETON St

Tax history for 21573 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 21573 CASTLETON St

More real estate resources