Off market may 2005 for $1.5M

$4,229,961

Est. refi paymentEst. refi $9,938/mo

•

2,412

sq ft

21594 CASTLETON St, Cupertino, CA 95014

About this home

Single-familyProperty Type

1979Year Built

9,148 sq ftLot Size

$1,754Est. Price/Sq.Ft.

2 car garageParking

Listed by Abby Ahrens •DRE #00325241 • Cupertino Properties

Bought with Carol J Christie • Cashin Company

Redfin checked: 2 minutes ago

•Source:MLSListings #ML80520241

Redfin Estimate

$4,229,961

$2.7M since sold in May 2005$76K since October

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 12.6% higher than the average sale price ($3.76M) 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 JAN 21, 2026
$4,000,000
B
5 beds3 baths2,412 sq ft
21630 Edward, Cupertino, CA 95014
SOLD OCT 8, 2026
$3,530,000
C
4 beds3 baths2,119 sq ft
10936 Linda Vista Dr, Cupertino, CA 95014
SOLD AUG 18, 2026
$4,080,000
D
4 beds3 baths2,119 sq ft
11113 Wilkinson Ave, Cupertino, CA 95014
SOLD OCT 21, 2026
$3,050,000
E
5 beds3 baths2,133 sq ft
829 Rose Blossom Dr, Cupertino, CA 95014
SOLD APR 10, 2026
$4,015,000
F
4 beds2.5 baths2,206 sq ft
21685 Regnart Rd, Cupertino, CA 95014

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Earn from this home

Sell

$3,504,888

Est. take-home

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Refinance

Est. cash available

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Rent

$6,852/mo

Redfin rental estimate

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Market trends in 95014, CA

Last updated October 2026

Buyer's Market

Seller's Market

Seller's market

Sale-to-list price

103.9%

1.4% MoM

Median sale price

$2.9M

$78K MoM

Avg. days on market

13d

0 days MoM

Recently sold homes

19 MoM

New listings for sale

EARLY ACCESS
$3,996,000
5 beds4 baths3,041 sq ft
19010 Barnhart Ave, Cupertino, CA 95014
OPEN THU, 9:30AM TO 12:30PM
$2,889,000
4 beds2 baths1,513 sq ft
7842 Orion Ln, Cupertino, CA 95014
3D WALKTHROUGH
$2,998,000
4 beds3 baths2,604 sq ft
18487 Edminton Dr, Cupertino, CA 95014
COMING SOON
$3,880,000
4 beds3 baths2,436 sq ft
7408 Stanford Pl, Cupertino, CA 95014
3D WALKTHROUGH
$2,898,000
3 beds2 baths1,596 sq ft
10755 Alderbrook Ln, Cupertino, CA 95014
3D WALKTHROUGH
$2,698,000
3 beds2 baths1,374 sq ft
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OPEN SAT, 1:30PM TO 4:30PM
$3,888,000
6 beds5.5 baths3,569 sq ft
10221 Stern Ave, Cupertino, CA 95014
See all

Provided by Redfin

Sale history for 21594 CASTLETON St

Year

Property tax

Land + Additions

Assessment*

2025

$25,661 (+2.8%)

$1,421,789 + $746,432

$2,168,221

2024

$24,957 (+0.9%)

$1,393,911 + $731,797

$2,125,708

2023

$24,738 (+2.2%)

$1,366,580 + $717,449

$2,084,029

2022

$24,196 (+1.1%)

$1,339,785 + $703,382

$2,043,167

2021

$23,941 (+1.3%)

$1,313,515 + $689,591

$2,003,106

2020

$23,645 (+2.5%)

$1,287,760 + $676,070

$1,963,830

2019

$23,067 (+2.8%)

$1,274,556 + $669,138

$1,943,694

2018

$22,432 (+0.6%)

$1,249,565 + $656,018

$1,905,583

2017

$22,289 (+3.3%)

$1,201,044 + $630,545

$1,831,589

2016

$21,570 (+0.7%)

$1,201,044 + $630,545

$1,831,589

2015

$21,418 (+1.0%)

$1,177,495 + $618,182

$1,795,677

2014

$21,205 (+29.9%)

$1,137,089 + $596,970

$1,734,059

2012

$16,324 (−3.8%)

$1,046,600 + $549,400

$1,596,000

2011

$16,976 (+12.6%)

$866,200 + $454,800

$1,321,000

2010

$15,074 (−12.0%)

$925,000 + $485,000

$1,410,000

2009

$17,137 (−7.8%)

$822,300 + $431,700

$1,254,000

2008

$18,585

$1,061,208 + $557,134

$1,618,342

Tax history for 21594 CASTLETON St

Year

Property tax

Land + Additions

Assessment*

2025

$25,661 (+2.8%)

$1,421,789 + $746,432

$2,168,221

2024

$24,957 (+0.9%)

$1,393,911 + $731,797

$2,125,708

2023

$24,738 (+2.2%)

$1,366,580 + $717,449

$2,084,029

2022

$24,196 (+1.1%)

$1,339,785 + $703,382

$2,043,167

2021

$23,941 (+1.3%)

$1,313,515 + $689,591

$2,003,106

2020

$23,645 (+2.5%)

$1,287,760 + $676,070

$1,963,830

2019

$23,067 (+2.8%)

$1,274,556 + $669,138

$1,943,694

2018

$22,432 (+0.6%)

$1,249,565 + $656,018

$1,905,583

2017

$22,289 (+3.3%)

$1,201,044 + $630,545

$1,831,589

2016

$21,570 (+0.7%)

$1,201,044 + $630,545

$1,831,589

2015

$21,418 (+1.0%)

$1,177,495 + $618,182

$1,795,677

2014

$21,205 (+29.9%)

$1,137,089 + $596,970

$1,734,059

2012

$16,324 (−3.8%)

$1,046,600 + $549,400

$1,596,000

2011

$16,976 (+12.6%)

$866,200 + $454,800

$1,321,000

2010

$15,074 (−12.0%)

$925,000 + $485,000

$1,410,000

2009

$17,137 (−7.8%)

$822,300 + $431,700

$1,254,000

2008

$18,585

$1,061,208 + $557,134

$1,618,342

*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

9,315 Sq. Ft.

Year renovated

1973

Sq. Ft.

2,412

Year built

1973

Style

Single Family Residential

County

Santa Clara County

APN

35620046

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

Dec 7, 2022 • Final

Residential mechanical

Replace the furnace in the closet and install a new air conditioning unit in the left side yard.

HVAC

Jul 19, 2019 • Final

Residential mechanical

Replace the furnace and install a new air conditioning system.

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
Garage Spaces: 2

Interior

Bedroom Information
# of Bedrooms (Minimum): 5
# of Bedrooms (Maximum): 5

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
Utility Room, Formal Entry
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 Living Room, Wood-Burning, Fireplace Available

Heating & Cooling Information
Heating: Forced Air

Exterior

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

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

Pool Information
Pool Description: Spa/Hot Tub, In-Ground (Other), Heated (Solar), Heated (Gas)

Property Features
Amenities: Vaulted Ceiling
Communication: Cable TV Available
Living Sq. Ft.: 2,412

Property Information
Property Primary ID: 192458

Lot Information
Lot Description: Grade (Level)
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: Insulation (Unknown)
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: 5
Baths: 3.0
Sq. Ft.: 2,412
Stories: 2.0
Lot Size: 9,315 square feet
Style: Single Family Residential
Year Built: 1973
Year Renovated: 1973
County: Santa Clara County
APN: 35620046

Home facts updated by county records on Aug 22, 2026

Around this home

Schools

K - 12
Preschool & daycare

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

Local insights from Redfin agents

The Cupertino housing market remains competitive. Over the past three months, homes have received an average of four offers and sold in about 10 days. The median home sale price reached $3.2 million, representing a 15.3% increase year over year.
4 weeks ago • Cupertino
Fifi Li
Redfin Premier agent
124 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

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

$4.02M – $4.87M

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New listings for sale in 95014

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Home values near 21594 CASTLETON St

Data from public records.

Address	Redfin Estimate
21584 Castleton Street, Cupertino, CA 4 Beds \| 3 Baths \| 2327 Sq. Ft.	$3,698,744
21603 Castleton Street, Cupertino, CA 3 Beds \| 3 Baths \| 2102 Sq. Ft.	$3,537,475
21593 Castleton Street, Cupertino, CA 5 Beds \| 3 Baths \| 2604 Sq. Ft.	$3,753,217
11116 Palos Verdes Drive, Cupertino, CA 4 Beds \| 2.5 Baths \| 2300 Sq. Ft.	$3,821,461
21607 Flintshire Street, Cupertino, CA 4 Beds \| 2.5 Baths \| 2135 Sq. Ft.	$4,188,680
11136 Palos Verdes Drive, Cupertino, CA 5 Beds \| 3 Baths \| 2565 Sq. Ft.	$3,737,621
11102 Clarkston Avenue, Cupertino, CA 4 Beds \| 3 Baths \| 2135 Sq. Ft.	$3,659,396

Address	Redfin Estimate
21583 Castleton Street, Cupertino, CA 4 Beds \| 3 Baths \| 2102 Sq. Ft.	$4,047,224
21604 Castleton Street, Cupertino, CA 4 Beds \| 3 Baths \| 2248 Sq. Ft.	$3,825,912
21613 Castleton Street, Cupertino, CA 4 Beds \| 3 Baths \| 1944 Sq. Ft.	$3,461,221
11113 Clarkston Avenue, Cupertino, CA 4 Beds \| 3 Baths \| 3184 Sq. Ft.	$4,449,907
11121 Clarkston Avenue, Cupertino, CA 6 Beds \| 4 Baths \| 3823 Sq. Ft.	$3,970,569
21582 Columbus Avenue, Cupertino, CA 4 Beds \| 2.5 Baths \| 2055 Sq. Ft.	$4,025,285
21577 Flintshire Street, Cupertino, CA 4 Beds \| 3 Baths \| 2248 Sq. Ft.	$3,855,694

Address	Redfin Estimate
21623 Castleton Street, Cupertino, CA 3 Beds \| 2 Baths \| 1571 Sq. Ft.	$3,012,580
21574 Castleton Street, Cupertino, CA 4 Beds \| 2.5 Baths \| 2135 Sq. Ft.	$3,621,612
21573 Castleton Street, Cupertino, CA 4 Beds \| 2.5 Baths \| 2119 Sq. Ft.	$3,682,272
21597 Flintshire Street, Cupertino, CA 5 Beds \| 3 Baths \| 2596 Sq. Ft.	$4,040,082
21612 Columbus Avenue, Cupertino, CA 3 Beds \| 2 Baths \| 1571 Sq. Ft.	$3,392,732
11106 Palos Verdes Drive, Cupertino, CA 4 Beds \| 3 Baths \| 1944 Sq. Ft.	$3,489,086
21587 Flintshire Street, Cupertino, CA 4 Beds \| 3 Baths \| 2135 Sq. Ft.	$3,830,081

Property information provided by MLSListings when last listed in 2005. This data may not match . Learn more.

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About this home

Redfin Estimate

Earn from this home

Market trends in 95014, CA

Sale history for 21594 CASTLETON St

Tax history for 21594 CASTLETON St

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 95014

Home values near 21594 CASTLETON St

More real estate resources