Alameda County  »  94546  »  Redwood Rd  »  21828 Redwood Rd

21828 Redwood Road, Castro Valley, CA 94546 - Property report

Also known as: 21828 Redwood Rd

Property image for 21828 Redwood Road, Castro Valley, CA 94546
static Mapbox map

Property type

Single Family Residential Homes Used as Such (1100)

Year built

1948

Acreage

0.09

Sale price

$910,000

General Information

Address
Primary address
21828 Redwood Rd
Castro Valley, CA 94546
Zip code
94546
County
Alameda
Parcel ID
416-20-1-2

Owner

Find out who owns 21828 Redwood Road, Castro Valley, CA 94546. Uncover corporate and individual owners with a free account.

Sales
Sale date
04/04/2025
Sale price
$910,000
Arm's length
Tax
Tax year
2025-2026
Property tax
$8,953
Tax per sq. ft.
$7
Building
Property type
Single Family Residential Homes Used as Such
Building sq. ft.
1,264
Stories
1
Year built
1948
Building material
Wood/wood and steel frames
Rooms
6
Elevator
Bedrooms
3
Bathrooms
1
Lot
Acreage
0.09
Zoning & use
Zoning
Single Family Residential (R1-CSU-RV)
Units
1

Area overview

Walk score
82 /100.  Very Walkable
Transit score
44 /100.  Some Transit
Bike score
80 /100.  Very Bikeable
School district
HAYWARD UNIF SCH
Ownership

Ownership information for 21828 Redwood Road, Castro Valley, CA

Property owner name
Registered owner
Source
Deed
Owner contact information
Phone number
Owner address
Documents

Sales history for 21828 Redwood Road, Castro Valley, CA 94546

Sale date Sale price Buyer name Seller name
04/04/2025 $910,000 XXXXXX XXXXXXX XXXXX XXXXXXXX XX
07/18/2006 $570,000 XXXXXXXX, XX XXXX, XXX

*Most recent sales on record for this property.

More about Alameda County property records.

Title documents

Date Type Amount Party 1 Party 2
04/04/2025 Interspousal Transfer Grant Deed XXXXXX XXXXXX XXXXXX XXXXXXX XXXXX
04/04/2025 Grant Deed XXXXXXXX XX XXXXXX XXXXXXX XXXXX
10/13/2021 Grant Deed XXXXX XXXXXXXX XXXXX XXXXX XXXXX XXXXXXXX XXXXX XXXXX
03/10/2016 Reconveyance
Substitution of Trustee		 XXXXXXXX XX XXXX XXX
07/18/2006 Deed XXXX, XXX XXXXXXXX, XX
08/30/2004 Deed XXXXXX XX XXXXXXX XXXX, XXX

*Most recent recorded documents on file for this property.

R: Recorded date
D: Document date

Tax

Property taxes for 21828 Redwood Road, Castro Valley, CA

Property tax data includes tax amount, market value and assessed value, exemptions, abatements and assessment history.

Current property tax
Tax year
2025-2026
Property tax
$8,953
Tax per sq. ft.
$7
Recent tax assessments
Market value
$763,616
Land value
$381,808
Building value
$381,808

More about Alameda County property taxes

Assessment history

See the assessment and property tax history, including the evolution of the total tax rate and corresponding property tax amount.

Tax year Assessed value Tax rate Property tax Y-o-Y change
2025-2026 $763,616 1.1724 $8,953 +0.98%
2024-2025 $748,648 1.1842 $8,865 -22.76%
2023-2024 $733,970 1.5638 $11,478 +34.17%
2022-2023 $719,584 1.1888 $8,554 +0.82%
2021-2022 $705,476 1.2028 $8,485 +1.16%
2020-2021 $698,244 1.2012 $8,387 -0.87%
2019-2020 $684,558 1.236 $8,461 +14.84%
2018-2019 $625,000 1.1788 $7,368 +15.03%
2017-2018 $546,000 1.173 $6,405 +11.17%
2016-2017 $512,000 1.1252 $5,761 +16.27%
Permits

Permit information for 21828 Redwood Road, Castro Valley, CA

Issued date Permit number Permit type Sub type Valuation Finaled date Status
01/28/2019
07/10/2018
07/05/2018
02/01/2018

*Most recent permits on record for this property.

Neighborhood

Castro Valley residential market stats

Access a detailed real estate market overview of Castro Valley so you can assess current trends, home values, types of properties sold and transaction volume. View the median home sale price in Castro Valley and compare it to other neighborhoods in Alameda.

Median sale price

$1,013,750

-2.9% Y-o-Y

Median price/sq. ft.

$619

-9.8% Y-o-Y

Alameda county median sale price

$955,000

-6.4% Y-o-Y

Check out recently sold homes in Castro Valley and see how their prices compare.

Risk

Create a free account to unlock expanded risk information, such as crime incidents in the area, tsunami and landslides risks, or its location relative to FEMA flood zones and the Coastal Barriers Resources System Area (COBRA).

FEMA flood zones

FEMA flood zones
0.2
Landslides and liquefaction map

Fire hazard zones

Faults and tsunami inundation zones map

Transportation

Daily traffic map
View daily traffic map

Access the detailed traffic volume map for 21828 Redwood Road, Castro Valley, CA 94546 to see estimated average daily traffic on streets surrounding the property as well as the types of properties in its vicinity.

Schools

Nearest elementary schools

Name Rating Type Grade range No of students Distance (miles)
Special Education-Preschool-Laurel NR Public 1 0.19
Vita Academy NR Private 1-6 0 0.26
The Montessori Giving Tree NR Private K-6 12 0.53
Marshall Elementary School 9 Public K-5 491 0.77
Castro Valley Elementary School 6 Public K-5 472 0.81
Strobridge Elementary School NR Public K-6 362 0.82
Faith Ringgold School of Arts and Science 1 Public K-8 111 0.88
Our Lady Of Grace School NR Private K-8 218 0.98
Northstar School NR Private PK-8 152 1.05
Northstar School NR Private PK-8 152 1.05
Nearest middle schools

Name Rating Type Grade range No of students Distance (miles)
Special Education-Preschool-Laurel NR Public 1 0.19
Stellar Preparatory High School NR Private 9 0 0.81
Faith Ringgold School of Arts and Science 1 Public K-8 111 0.88
Our Lady Of Grace School NR Private K-8 218 0.98
Creekside Middle School 8 Public 6-8 760 1.01
Northstar School NR Private PK-8 152 1.05
Liber Community School NR Private 4-12 0 1.07
All Saints Catholic School NR Private K-8 203 1.15
Castro Valley Adult And Career Education NR Public 0 1.34
Alma Preschool NR Public 52 1.35
Nearest high schools

Name Rating Type Grade range No of students Distance (miles)
Special Education-Preschool-Laurel NR Public 1 0.19
Stellar Preparatory High School NR Private 9 0 0.81
Liber Community School NR Private 4-12 0 1.07
Castro Valley High School 9 Public 9-12 2,799 1.17
Hayward High School 5 Public 9-12 1,712 1.27
Redwood Christian Schools NR Private K-12 706 1.28
Stellar Preparatory High School NR Private 9-11 26 1.28
Castro Valley Adult And Career Education NR Public 0 1.34
Alma Preschool NR Public 52 1.35
Victory Academy NR Private 7, 9-11 0 1.45

Data provided by GreatSchools.org © 2026. All rights reserved.

Neighbors for 21828 Redwood Road, Castro Valley, CA

2958 Giovana Way, Castro Valley 21059 Sherman Dr, Castro Valley 7776 Coolidge CT, Castro Valley 19271 Santa Maria Ave, Castro Valley 5052 Wicks Ln, Castro Valley 3375 Somerset Ave, Castro Valley 22782 Canyon CT, Castro Valley 21047 Sherman Dr, Castro Valley 20898 Sherman Dr, Castro Valley 22560 Canyon Terrace Dr, Castro Valley 4303 Heyer Ave, Castro Valley 22737 Canyon CT, Castro Valley 22550 Canyon Terrace Dr, Castro Valley 20020 Forest Ave, Castro Valley 22736 Canyon CT, Castro Valley 4423 Santos Amaro Pl, Castro Valley 2754 Sydney Way, Castro Valley 10880 Cull Canyon Rd, Castro Valley 22559 Canyon Terrace Dr, Castro Valley 22500 Canyon Terrace Dr, Castro Valley

Nearby ZIP codes for 21828 Redwood Road, Castro Valley, CA

94542, Alameda County, CA 94579, Alameda County, CA 94601, Alameda County, CA 94613, Alameda County, CA 94619, Alameda County, CA

Frequently asked questions

What is the year built for 21828 Redwood Road, Castro Valley, CA 94546?

The development at 21828 Redwood Road, Castro Valley, CA 94546 was built in 1948.

What is the total square footage of 21828 Redwood Road, Castro Valley, CA 94546?

21828 Redwood Road, Castro Valley, CA 94546 has a total of 1,264 square feet.

When was 21828 Redwood Road, Castro Valley, CA 94546 last sold and what was the sale price?

21828 Redwood Road, Castro Valley, CA 94546 was last sold on 04/04/2025 for $910,000.

What is the assessed value of 21828 Redwood Road, Castro Valley, CA 94546?

21828 Redwood Road, Castro Valley, CA 94546 is currently assessed at $763,616.

What are the property taxes for 21828 Redwood Road, Castro Valley, CA 94546?

The property taxes for 21828 Redwood Road, Castro Valley, CA 94546 total $8,952.

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