OFF MARKET

Off Market Oct 2018 for $900K

$1,271,292

Est. refi paymentEst. refi $5,750/mo

•

2,185

sq ft

21631 Shadyspring Rd, Castro Valley, CA 94546

About this home

Buyers, if you are working with an agent, please contact them for info. Your dream kitchen awaits you in this beautifully updated and expanded Castro Valley home! It is situated above Grove Way near Carlos Bee Park in a tranquil neighborhood with views of the San Francisco Bay and surrounding area. Updated kitchen with large center island, double ovens, granite counter tops, newer appliances, fixtures, and lighting. Master bedroom with remodeled bathroom and large walk-in closet. Dual pane windows and sliding glass door leading to outdoor living. Private back yard with deck, built-in fire pit, water feature and brick patio area. Double attached garage and insulated roll up door with opener. Additional storage area under the house. Close to Carlos Bee Community Park, Castro Valley BART, I-580, Redwood Road and Downtown Castro Valley. Strobridge Elementary School, Bret Harte Middle School, and Hayward High School - buyer to verify with school district.

Single-familyProperty Type

1975Year Built

10,020 sq ftLot Size

$582Est. Price/Sq.Ft.

2 car garageParking

Listed by Kevin Dielissen •DRE #00772759 • Pacific Union International

Bought with Francis W. Szeto •DRE #01326333 • Formality Real Estate

Bought with Laura Tang •DRE #01325528 • Formality Real Estate

Redfin checked: 2 minutes ago

•Source:bridgeMLS, Bay East AOR, or Contra Costa AOR #40826822

Redfin Estimate

$1,271,292

$371K since sold in October 2018$5,000 since August

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 26.6% higher than the average sale price ($1.00M) of 6 comparable homes.

SOLD MAY 22, 2026
$1,075,000
A
3 beds2 baths1,876 sq ft
21723 Shadyspring Rd, Castro Valley, CA 94546
SOLD SEP 16, 2026
$920,000
B
3 beds2.5 baths1,632 sq ft
21671 Shady Spring Rd, Castro Valley, CA 94546
SOLD SEP 11, 2026
$1,170,000
C
4 beds3 baths2,474 sq ft
21714 Shadyspring Rd, Castro Valley, CA 94546
SOLD APR 10, 2026
$1,275,000
D
3 beds2.5 baths2,239 sq ft
21928 Baywood Ave, Castro Valley, CA 94546
SOLD MAR 27, 2026
$825,000
E
3 beds2 baths1,557 sq ft
1516 Grove Way, Castro Valley, CA 94546
SOLD SEP 17, 2026
$760,000
F
3 beds2 baths1,544 sq ft
873 Blossom Way, Cherryland, CA 94541

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Earn from this home

Sell

$601,549

Est. take-home

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Refinance

Est. cash available

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Rent

$4,192/mo

Redfin rental estimate

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Market trends in 94546, CA

Last updated August 2026

Buyer's Market

Seller's Market

Seller's market

Sale-to-List Price

104.3%

+0.4% MoM

Median sale price

$1.1M

$27K MoM

Avg. days on market

15d

1 days MoM

Recently sold homes

14 MoM

New listings for sale

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See all

Provided by Redfin

Sale history for 21631 Shadyspring Rd

Year

Property tax

Land + Additions

Assessment*

2025

$12,916 (+2.5%)

$307,208 + $716,820

$1,024,028

2024

$12,606 (+1.8%)

$301,185 + $702,765

$1,003,950

2023

$12,389 (+2.2%)

$295,280 + $688,986

$984,266

2022

$12,121 (+1.0%)

$283,815 + $662,237

$946,052

2021

$12,004 (+1.3%)

$283,815 + $662,237

$946,052

2020

$11,855 (−0.8%)

$278,251 + $649,252

$927,503

2019

$11,950 (+186.1%)

$275,400 + $642,600

$918,000

2018

$4,177 (+2.6%)

$270,000 + $630,000

$900,000

2017

$4,072 (+6.2%)

$74,296 + $213,057

$287,353

2016

$3,834 (+2.9%)

$74,296 + $213,057

$287,353

2015

$3,726 (+5.7%)

$72,840 + $208,880

$281,720

2014

$3,524 (+1.5%)

$70,341 + $201,714

$272,055

2013

$3,473 (+2.2%)

$70,341 + $201,714

$272,055

2012

$3,397 (+2.2%)

$70,023 + $200,803

$270,826

2011

$3,322 (+2.2%)

$68,650 + $196,867

$265,517

2010

$3,251 (−1.2%)

$67,305 + $193,008

$260,313

2009

$3,290 (+4.4%)

$66,802 + $191,566

$258,368

2008

$3,150

$66,961 + $192,022

$258,983

Tax history for 21631 Shadyspring Rd

Year

Property tax

Land + Additions

Assessment*

2025

$12,916 (+2.5%)

$307,208 + $716,820

$1,024,028

2024

$12,606 (+1.8%)

$301,185 + $702,765

$1,003,950

2023

$12,389 (+2.2%)

$295,280 + $688,986

$984,266

2022

$12,121 (+1.0%)

$283,815 + $662,237

$946,052

2021

$12,004 (+1.3%)

$283,815 + $662,237

$946,052

2020

$11,855 (−0.8%)

$278,251 + $649,252

$927,503

2019

$11,950 (+186.1%)

$275,400 + $642,600

$918,000

2018

$4,177 (+2.6%)

$270,000 + $630,000

$900,000

2017

$4,072 (+6.2%)

$74,296 + $213,057

$287,353

2016

$3,834 (+2.9%)

$74,296 + $213,057

$287,353

2015

$3,726 (+5.7%)

$72,840 + $208,880

$281,720

2014

$3,524 (+1.5%)

$70,341 + $201,714

$272,055

2013

$3,473 (+2.2%)

$70,341 + $201,714

$272,055

2012

$3,397 (+2.2%)

$70,023 + $200,803

$270,826

2011

$3,322 (+2.2%)

$68,650 + $196,867

$265,517

2010

$3,251 (−1.2%)

$67,305 + $193,008

$260,313

2009

$3,290 (+4.4%)

$66,802 + $191,566

$258,368

2008

$3,150

$66,961 + $192,022

$258,983

*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

10,020 Sq. Ft.

Year renovated

1990

Sq. Ft.

2,185

Year built

1975

Style

Single Family Residential

County

Alameda County

APN

415 018000900

Parking Spaces

—

Basement

—

Accessible

—

HOA Dues

—

Garage

—

Features

—

Last updated by owner on Sep 16, 2026.

Single-Family Residence Districts

Single-family residence districts, hereinafter designated as R-1 districts, are established to provide for and protect established neighborhoods of one-family dwellings, and to provide space in suitable locations for additional development of this kind, together with appropriate community facilities and allowance for restricted interim cultivation of the soil compatible with such low-density residential development.

Permitted uses

Include but are not limited to:

Housing-Single unit
Agriculture-Cropland
Agriculture-Grove / orchard

Nov 10, 2014 • Final

Building

Remodel a master bathroom. Replace the shower pan and surround, install a new sink and faucet, and perform electrical work.

Bathroom

Electrical

Jun 24, 2008 • Final

Building

Convert an existing covered porch into a habitable living area. Replace windows with a garden window and French doors, remodel the dining room, family room, and kitchen, and relocate the laundry facilities.

Addition

Remodel

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
Has Attached Garage
Garage Spaces: 2
Covered Spaces: 2
Parking Features: Attached, Garage Door Opener

Interior

Virtual Tour

Bathroom Information
# of Bathrooms Total: 2
# of Bathrooms Full: 2
Other Bathrooms Included Features: Shower Over Tub, Solid Surface, Updated Baths
Primary Bathroom Included Features: Solid Surface, Stall Shower, Updated Baths

Interior Features
Interior Features: Dining Area, Family Room, Breakfast Bar, Stone Counters, Eat-in Kitchen, Kitchen Island, Pantry, Updated Kitchen
Appliances: Dishwasher, Double Oven, Disposal, Microwave, Oven, Refrigerator, Dryer, Washer, Gas Water Heater
Laundry Features: 220 Volt Outlet, Dryer, Laundry Room, Washer
Upper Level Features: 1 Bedroom, 2 Baths, Primary Bedrm Suite - 1, Laundry Facility
Street Level Features: 1 Bedroom, Main Entry
Window Features: Double Pane Windows, Window Coverings
Flooring: Hardwood, Laminate, Carpet

Room Information
Kitchen Features: Breakfast Bar,Counter - Stone,Dishwasher,Double Oven,Eat In Kitchen,Garbage Disposal,Island,Microwave,Oven Built-in,Pantry,Refrigerator,Updated Kitchen
Rooms Total: 6
Basement: Crawl Space

Exterior

Building Information
Construction Materials: Stucco
Building Area Total: 2,185

Exterior Features
Patio And Porch Features: Deck, Patio
Exterior Features: Back Yard
Fencing: Fenced
Roof: Shingle

Property Information
Living Area: 2185
Living Area Units: Square Feet
Property Type: Residential
Property Sub Type: Single Family Residence
Year Built: 1975

Lot Information
Lot Size Square Feet: 10020
Lot Size Area: 0.23
Lot Size Units: Acres
Lot Size Acres: 0.23
Lot Features: Sloped Up

Utilities

Utility Information
Water Source: Public
Sewer: Public Sewer

Heating & Cooling
Has Heating
Heating: Forced Air, Natural Gas
Cooling: No Air Conditioning

Location

School Information
High School District: Hayward (510) 784-2600

Public facts

Beds: 3
Baths: 2.0
Sq. Ft.: 2,185
Stories: 2.0
Lot Size: 10,020 square feet
Style: Single Family Residential
Year Built: 1975
Year Renovated: 1990
County: Alameda County
APN: 415 018000900

Home facts updated by county records on Sep 16, 2026

Around this home

Schools

Fairview Elementary School

Public K-6 • Assigned • 1.8mi

2/10

Bret Harte Middle School

Public 7-8 • Assigned • 1.1mi

4/10

Hayward High School

Public 9-12 • Assigned • 1.3mi

5/10

Provided by GreatSchools

Lifestyle

Provided by Walk Score and Local Logic

Local insights from Redfin agents

Castro Valley is moving at a brisk pace this summer! Median prices are holding steady around $1.2M, but well-priced, turnkey homes are flying off the market in under 15 days, often over asking. Inventory is moving fast, so buyers must come prepared...
4 weeks ago • Castro Valley
Johnny Singh
Redfin Premier agent
148 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

7 days above 88° expected this year, 14 days in 30 years

1/10 Wind Factor

Minimal risk of severe winds over next 30 years

7/10 Air Factor

12 unhealthy days expected this year, 12 days in 30 years

Provided by First Street

Historical weather

Castro Valley, CA • 94546

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

11.2 hrs

4.9 hrs

JuneDecember

Provided by Shadowmap

Estimated sale price

$1.21M – $1.46M

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Home values near 21631 Shadyspring Rd

Data from public records.

Address	Redfin Estimate
21623 Shadyspring Road, Castro Valley, CA 3 Beds \| 2 Baths \| 2246 Sq. Ft.	$1,268,319
21683 Shadyspring Road, Castro Valley, CA 3 Beds \| 2 Baths \| 2372 Sq. Ft.	$1,264,582

Address	Redfin Estimate
21651 Shadyspring Road, Castro Valley, CA 3 Beds \| 2 Baths \| 2517 Sq. Ft.	$1,325,537
21639 Shadyspring Road, Castro Valley, CA 3 Beds \| 2 Baths \| 1944 Sq. Ft.	$1,242,484

Address	Redfin Estimate
21663 Shadyspring Road, Castro Valley, CA - Beds \| - Baths \| 1812 Sq. Ft.	$1,012,937
21611 Shadyspring Road, Castro Valley, CA 3 Beds \| 2 Baths \| 1557 Sq. Ft.	$822,050

Property information provided by bridgeMLS, Bay East AOR, or Contra Costa AOR when last listed in 2018. 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 94546, CA

Sale history for 21631 Shadyspring Rd

Tax history for 21631 Shadyspring Rd

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 94546

Home values near 21631 Shadyspring Rd

More real estate resources