Off market dec 1998 for $677K

$3,645,626

Est. refi paymentEst. refi $4,033/mo

•

2,135

sq ft

21574 CASTLETON St, Cupertino, CA 95014

About this home

Single-familyProperty Type

9,200 sq ftLot Size

$1,708Est. Price/Sq.Ft.

2 car garageParking

Listed by Abby Ahrens •DRE #00325241 • Cupertino Properties

Bought with Abby Ahrens •DRE #00325241 • Cupertino Properties

Redfin checked: 2 minutes ago

•Source:MLSListings #ML89849877

Redfin Estimate

$3,645,626

$3.0M since sold in December 1998$108K since September

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 7.4% lower than the average sale price ($3.94M) of 5 comparable homes.

SOLD APR 10, 2026
$4,015,000
A
4 beds2.5 baths2,206 sq ft
21685 Regnart Rd, Cupertino, CA 95014
SOLD AUG 18, 2026
$4,080,000
B
4 beds3 baths2,119 sq ft
11113 Wilkinson Ave, Cupertino, CA 95014
SOLD JUL 6, 2026
$3,655,000
C
4 beds2.5 baths2,126 sq ft
10198 Cass Pl, Cupertino, CA 95014
SOLD SEP 28, 2026
$3,869,000
D
5 beds3 baths2,412 sq ft
21570 Edward Way, Cupertino, CA 95014
SOLD MAY 18, 2026
$4,060,000
E
4 beds2.5 baths2,412 sq ft
21558 Flintshire St, Cupertino, CA 95014

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Earn from this home

Sell

$3,387,231

Est. take-home

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Refinance

Est. cash available

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Rent

$6,508/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
$2,698,000
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
10561 Carver Dr, Cupertino, CA 95014
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
20582 Murano Cir, Cupertino, CA 95014
See all

Provided by Redfin

Sale history for 21574 CASTLETON St

Year

Property tax

Land + Additions

Assessment*

2025

$13,464 (+2.8%)

$595,804 + $487,546

$1,083,350

2024

$13,095 (+1.0%)

$584,122 + $477,987

$1,062,109

2023

$12,966 (+0.3%)

$572,669 + $468,615

$1,041,284

2022

$12,929 (+1.1%)

$561,441 + $459,427

$1,020,868

2021

$12,783 (+1.3%)

$550,433 + $450,419

$1,000,852

2020

$12,620 (+2.6%)

$539,641 + $441,588

$981,229

2019

$12,303 (+3.1%)

$534,108 + $437,061

$971,169

2018

$11,931 (+0.8%)

$523,636 + $428,492

$952,128

2017

$11,840 (+3.4%)

$503,303 + $411,854

$915,157

2016

$11,455 (+0.8%)

$503,303 + $411,854

$915,157

2015

$11,362 (+2.7%)

$493,435 + $403,779

$897,214

2014

$11,066 (+2.5%)

$476,504 + $389,924

$866,428

2012

$10,793 (+4.2%)

$474,351 + $388,162

$862,513

2011

$10,361 (+1.9%)

$465,050 + $380,551

$845,601

2010

$10,164

$455,932 + $373,090

$829,022

2009

$10,159 (+6.2%)

$452,525 + $370,302

$822,827

2008

$9,563

$444,707 + $363,904

$808,611

Tax history for 21574 CASTLETON St

Year

Property tax

Land + Additions

Assessment*

2025

$13,464 (+2.8%)

$595,804 + $487,546

$1,083,350

2024

$13,095 (+1.0%)

$584,122 + $477,987

$1,062,109

2023

$12,966 (+0.3%)

$572,669 + $468,615

$1,041,284

2022

$12,929 (+1.1%)

$561,441 + $459,427

$1,020,868

2021

$12,783 (+1.3%)

$550,433 + $450,419

$1,000,852

2020

$12,620 (+2.6%)

$539,641 + $441,588

$981,229

2019

$12,303 (+3.1%)

$534,108 + $437,061

$971,169

2018

$11,931 (+0.8%)

$523,636 + $428,492

$952,128

2017

$11,840 (+3.4%)

$503,303 + $411,854

$915,157

2016

$11,455 (+0.8%)

$503,303 + $411,854

$915,157

2015

$11,362 (+2.7%)

$493,435 + $403,779

$897,214

2014

$11,066 (+2.5%)

$476,504 + $389,924

$866,428

2012

$10,793 (+4.2%)

$474,351 + $388,162

$862,513

2011

$10,361 (+1.9%)

$465,050 + $380,551

$845,601

2010

$10,164

$455,932 + $373,090

$829,022

2009

$10,159 (+6.2%)

$452,525 + $370,302

$822,827

2008

$9,563

$444,707 + $363,904

$808,611

*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

9,200 Sq. Ft.

Year renovated

1973

Sq. Ft.

2,135

Year built

1973

Style

Single Family Residential

County

Santa Clara County

APN

35620048

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

Jan 10, 2023 • Final

Residential plumbing

Replace the sewer line and the property line cleanout.

Plumbing

Jul 19, 2019 • Final

Residential electrical

Install a car charger.

Electrical

Ev charger

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, Off-Street Parking
Garage Spaces: 2

Interior

Bedroom Information
# of Bedrooms (Minimum): 4
# of Bedrooms (Maximum): 4
Bedrooms: Primary Suite/Retreat, 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
Utility Room, Formal Entry
Family Room Description: Separate Family Room
Dining Room Description: Formal Dining Room
Kitchen Description: Pantry, Dishwasher, Cooktop, Garbage Disposal, Microwave, Oven (Built-In), 220 Volt Outlet

Interior Features
Laundry: In Laundry Room, 220 Volt Outlet
Flooring: Tile, Carpet (Wall-to-Wall)

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

Heating & Cooling Information
Heating: Forced Air

Exterior

Exterior Features
View: Local/Neighborhood
Roof: Tile
Yard/Grounds: Patio(s), Sprinkler(s) (Front), Fenced

Building Information
Builder Architect: DITZ-CRANE
Style: Ranch
Subclass: Single Family Home
Building Type: Detached
Exterior: Wood, Stucco
Concrete Perimeter
Building Height (Minimum): 1
Building Height (Maximum): 1

Pool Information
Pool Description: Spa/Hot Tub, In-Ground (Concrete), Black Bottom, Heated (Gas)

Property Features
Living Sq. Ft.: 2,135

Property Information
Level (Street/Main): Bedroom(s)
Property Primary ID: 417487

Lot Information
Lot Description: Grade (Sloped Up)
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: 1

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.: 2,135
Stories: 1.0
Lot Size: 9,200 square feet
Style: Single Family Residential
Year Built: 1973
Year Renovated: 1973
County: Santa Clara County
APN: 35620048

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 – $4.19M

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Home values near 21574 CASTLETON St

Data from public records.

Address	Redfin Estimate
21584 Castleton St, Cupertino, CA 4 Beds \| 3 Baths \| 2327 Sq. Ft.	$3,746,778
21604 Castleton St, Cupertino, CA 4 Beds \| 3 Baths \| 2248 Sq. Ft.	$3,821,982

Address	Redfin Estimate
21583 Castleton St, Cupertino, CA 4 Beds \| 3 Baths \| 2102 Sq. Ft.	$4,150,533
21594 Castleton St, Cupertino, CA 5 Beds \| 3 Baths \| 2412 Sq. Ft.	$4,176,774

Address	Redfin Estimate
21603 Castleton St, Cupertino, CA 3 Beds \| 3 Baths \| 2102 Sq. Ft.	$3,564,427
21593 Castleton St, Cupertino, CA 5 Beds \| 3 Baths \| 2604 Sq. Ft.	$3,725,832

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 21574 CASTLETON St

Tax history for 21574 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 21574 CASTLETON St

More real estate resources