Alameda County  »  94546  »  Opal CT  »  20075 Opal CT

20075 Opal Court, Castro Valley, CA 94546 - Property report

Also known as: 20075 Opal CT

Property image for 20075 Opal Court, Castro Valley, CA 94546
static Mapbox map

Property type

2 Units, Single Family Residence with Detattched Accessory Dwelling Unit (2502)

Year built

1947

Acreage

0.17

Sale price

$438,000

General Information

Address
Primary address
20075 Opal Ct
Castro Valley, CA 94546
Zip code
94546
County
Alameda
Parcel ID
84C-669-65

Owner

Find out who owns 20075 Opal Court, Castro Valley, CA 94546. Uncover corporate and individual owners with a free account.

Sales
Sale date
01/30/2004
Sale price
$438,000
Arm's length
Tax
Tax year
2025-2026
Base tax
$10,282
Current property tax
$10,201
Tax per sq. ft.
$4
Building
Property type
2 Units, Single Family Residence with Detattched Accessory Dwelling Unit
Building sq. ft.
2,500
Stories
1
Year built
1947
Building material
Wood/wood and steel frames
Last altered
1966
Rooms
10
Elevator
Bedrooms
5
Bathrooms
3
Lot
Acreage
0.17
Zoning & use
Zoning
Single Family Residential (R1-CSU-RV)
Units
2

Area overview

Walk score
68 /100.  Somewhat Walkable
Transit score
33 /100.  Some Transit
Bike score
47 /100.  Somewhat Bikeable
School district
CASTRO VLY UNIF SCH
Ownership

Ownership information for 20075 Opal Court, Castro Valley, CA

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

Sales history for 20075 Opal Court, Castro Valley, CA 94546

Sale date Sale price Buyer name Seller name
01/30/2004 $438,000 XX, XXX X XXXXXX, XXXXXX X
10/07/1998 $70,000 XXXXXX, XXXXXX X XXXXXXX, XXXXXX X

*Most recent sales on record for this property.

More about Alameda County property records.

Title documents

Date Type Amount Party 1 Party 2
01/30/2004 Deed XXXXXX, XXXXXX X XX, XXX X
10/07/1998 Deed XXXXXXX, XXXXXX X XXXXXX, XXXXXX X
04/12/1994 Deed XXXXXX, XXXXXX XXXXXXX, XXXXXX X

*Most recent recorded documents on file for this property.

R: Recorded date
D: Document date

Tax

Property taxes for 20075 Opal Court, 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
Base tax
$10,282
Current property tax
$10,201
Tax per sq. ft.
$4
Recent tax assessments
Market value
$883,340
Land value
$186,684
Building value
$696,656

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 $883,340 1.164 $10,282 +0.69%
2024-2025 $866,024 1.1791 $10,211 -48.84%
2023-2024 $849,044 2.3508 $19,959 +101.36%
2022-2023 $832,398 1.1908 $9,912 +2.52%
2021-2022 $816,082 1.1848 $9,669 +11.11%
2020-2021 $743,618 1.1703 $8,703 +23.38%
2019-2020 $581,978 1.212 $7,054 +2.36%
2018-2019 $570,567 1.2077 $6,891 +2.65%
2017-2018 $559,380 1.2001 $6,713 +18.55%
2016-2017 $548,412 1.0326 $5,663 -1.67%
Permits

Permit information for 20075 Opal Court, Castro Valley, CA

Issued date Permit number Permit type Sub type Valuation Finaled date Status
03/13/2019
02/26/2018

*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
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 20075 Opal Court, 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)
Marshall Elementary School 9 Public K-5 491 0.19
Early Bird Montessori School NR Private PK, K-1 30 0.42
Early Bird Montessori School NR Private PK, K-1 30 0.42
Independent Elementary School 8 Public K-5 634 0.66
Vannoy Elementary School 7 Public K-5 441 0.69
Northstar School NR Private PK-8 152 0.78
Northstar School NR Private PK-8 152 0.78
Redwood Christian Elementary School NR Private K-5 282 0.81
Special Education-Preschool-Laurel NR Public 1 0.82
Castro Valley Adult And Career Education NR Public 0 0.85
Nearest middle schools

Name Rating Type Grade range No of students Distance (miles)
Creekside Middle School 8 Public 6-8 760 0.17
Northstar School NR Private PK-8 152 0.78
Canyon Middle School 6 Public 6-8 1,332 0.81
Special Education-Preschool-Laurel NR Public 1 0.82
Castro Valley Adult And Career Education NR Public 0 0.85
Redwood Christian Schools NR Private K-12 706 0.88
Alma Preschool NR Public 52 0.88
Our Lady Of Grace School NR Private K-8 218 1.14
Stellar Preparatory High School NR Private 9 0 1.50
Anchor Education, Inc. NR Private 3-12 18 1.55
Nearest high schools

Name Rating Type Grade range No of students Distance (miles)
Special Education-Preschool-Laurel NR Public 1 0.82
Castro Valley Adult And Career Education NR Public 0 0.85
Redwood Christian Schools NR Private K-12 706 0.88
Alma Preschool NR Public 52 0.88
Castro Valley High School 9 Public 9-12 2,799 0.97
Stellar Preparatory High School NR Private 9 0 1.50
Anchor Education, Inc. NR Private 3-12 18 1.55
Sterling West San Francisco Campus NR Private 3-11 27 1.57
Anchor Education, Inc. School NR Private 3-12 0 1.57
Hayward High School 5 Public 9-12 1,712 1.84

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

Neighbors for 20075 Opal Court, Castro Valley, CA

20113 Center St, Castro Valley 4234 Veronica Ave, Castro Valley 20053 Opal CT, Castro Valley 20020 Onyx CT, Castro Valley 4247 Gem Ave, Castro Valley 20183 Sheldon CT, Castro Valley 4271 Gem Ave, Castro Valley 20054 Onyx CT, Castro Valley 20076 Onyx CT, Castro Valley 20055 Onyx CT, Castro Valley 4293 Gem Ave, Castro Valley 20149 Center St, Castro Valley 4253 Gem Ave, Castro Valley 20022 Topaz CT, Castro Valley 20168 Sheldon CT, Castro Valley 20194 Sheldon CT, Castro Valley 4278 Gem Ave, Castro Valley 20171 Sheldon CT, Castro Valley 4208 Veronica Ave, Castro Valley 4277 Gem Ave, Castro Valley

Nearby ZIP codes for 20075 Opal Court, 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 20075 Opal Court, Castro Valley, CA 94546?

The development at 20075 Opal Court, Castro Valley, CA 94546 was built in 1947.

What is the total square footage of 20075 Opal Court, Castro Valley, CA 94546?

20075 Opal Court, Castro Valley, CA 94546 has a total of 2,500 square feet.

When was 20075 Opal Court, Castro Valley, CA 94546 last sold and what was the sale price?

20075 Opal Court, Castro Valley, CA 94546 was last sold on 01/30/2004 for $438,000.

What is the assessed value of 20075 Opal Court, Castro Valley, CA 94546?

20075 Opal Court, Castro Valley, CA 94546 is currently assessed at $883,340.

What are the property taxes for 20075 Opal Court, Castro Valley, CA 94546?

The property taxes for 20075 Opal Court, Castro Valley, CA 94546 total $10,282.

How many residential units does this building have?

This building has 2 residential unit(s).

Disclaimer

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