Alameda County  »  94546  »  Oak St  »  20820 Oak St

20820 Oak Street, Castro Valley, CA 94546 - Property report

Also known as: 20820 Oak St

Property image for 20820 Oak Street, Castro Valley, CA 94546
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Property type

Exempt Public Agency (0300)

Acreage

6.87

General Information

Address
Primary address
20820 Oak St
Castro Valley, CA 94546
Zip code
94546
County
Alameda
Parcel ID
415-10-33-5

Owner

Find out who owns 20820 Oak Street, Castro Valley, CA 94546. Uncover corporate and individual owners with a free account.

Tax
Tax year
2025-2026
Building
Property type
Exempt Public Agency
Elevator
Lot
Acreage
6.87
Zoning & use
Zoning
Retail Business (C1)

Area overview

Walk score
62 /100.  Somewhat Walkable
Transit score
38 /100.  Some Transit
Bike score
25 /100.  Somewhat Bikeable
School district
HAYWARD UNIF SCH
Ownership

Ownership information for 20820 Oak Street, Castro Valley, CA

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

Sales history for 20820 Oak Street, Castro Valley, CA 94546

No recently recorded sales for this property.

More about Alameda County property records.

Title documents

No recently recorded documents for this property.

Tax

Property taxes for 20820 Oak Street, 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

More about Alameda County property taxes

Permits

Permit information for 20820 Oak Street, Castro Valley, CA

No recently recorded permits for this property.

Neighborhood

Hayward residential market stats

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

Median sale price

$840,000

-0.9% Y-o-Y

Median price/sq. ft.

$546

-7.9% Y-o-Y

Alameda county median sale price

$955,000

-6.4% Y-o-Y

Check out recently sold homes in Hayward 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
X
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 20820 Oak Street, 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)
Crossroads Christian Elementary School NR Private K-6 0 0.27
Strobridge Elementary School NR Public K-6 362 0.30
Camelot School NR Private K 14 0.62
The Montessori Giving Tree NR Private K-6 12 0.74
Liber Community School NR Private 4-12 0 0.74
Stanton Elementary School 6 Public K-5 492 0.85
Harder Elementary School 3 Public K-6 675 0.89
Knowledge Enlightens You (Key) Academy 5 Charter K-8 614 0.89
Montessori School Of San Leandro NR Private PK-K 130 0.96
Castro Valley Elementary School 6 Public K-5 472 0.96
Nearest middle schools

Name Rating Type Grade range No of students Distance (miles)
Liber Community School NR Private 4-12 0 0.74
Knowledge Enlightens You (Key) Academy 5 Charter K-8 614 0.89
Our Lady Of Grace School NR Private K-8 218 1.03
Hayward Adult NR Public 0 1.11
Anchor Education, Inc. School NR Private 3-12 0 1.22
Sterling West San Francisco Campus NR Private 3-11 27 1.23
Anchor Education, Inc. NR Private 3-12 18 1.23
Special Education-Preschool-Laurel NR Public 1 1.29
Edendale Middle School 2 Public 6-8 500 1.42
Faith Ringgold School of Arts and Science 1 Public K-8 111 1.44
Nearest high schools

Name Rating Type Grade range No of students Distance (miles)
Liber Community School NR Private 4-12 0 0.74
Hayward Adult NR Public 0 1.11
Brenkwitz High School 2 Public 9-12 179 1.15
Anchor Education, Inc. School NR Private 3-12 0 1.22
Sterling West San Francisco Campus NR Private 3-11 27 1.23
Anchor Education, Inc. NR Private 3-12 18 1.23
Stellar Preparatory High School NR Private 9-11 26 1.26
Special Education-Preschool-Laurel NR Public 1 1.29
Castro Valley High School 9 Public 9-12 2,799 1.47
East Bay Arts High School 4 Public 9-12 188 1.57

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

Neighbors for 20820 Oak Street, Castro Valley, CA

21395 Foothill Blvd, Hayward 914 Blossom Way, Hayward 1218 Grove Way, Hayward 21360 Ocean View Dr, Hayward 21390 Ocean View Dr, Hayward 1248 Grove Way, Hayward 20632 Fuchsia CT, Hayward 21446 Montgomery Ave, Hayward 21274 Birch St, Hayward 803 Cherry Way, Hayward 1234 Grove Way, Hayward 1262 Grove Way, Hayward 761 Medford Ave, Hayward 21459 Locust St, Hayward 21288 Mission Blvd, Hayward 21163 Ocean View Dr, Hayward 20810 Foothill Blvd, Hayward 21313 Foothill Blvd, Hayward 21266 Birch St, Hayward 21406 Ocean View Dr, Hayward

Nearby ZIP codes for 20820 Oak Street, Castro Valley, CA

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