Alameda County  »  94546  »  Gem CT  »  20008 Gem CT

20008 Gem Court, Castro Valley, CA 94546 - Property report

Also known as: 20008 Gem CT

Property image for 20008 Gem Court, Castro Valley, CA 94546
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Property type

Single Family Residential Homes Used as Such (1100)

Year built

1950

Acreage

2.07

Sale price

$405,000

General Information

Address
Primary address
20008 Gem Ct
Castro Valley, CA 94546
Zip code
94546
County
Alameda
Parcel ID
84C-1064-51

Owner

Find out who owns 20008 Gem Court, Castro Valley, CA 94546. Uncover corporate and individual owners with a free account.

Sales
Sale date
03/12/2010
Sale price
$405,000
Arm's length
Tax
Tax year
2026-2027
Base tax
$6,206
Current property tax
$6,125
Tax per sq. ft.
$6
Building
Property type
Single Family Residential Homes Used as Such
Building sq. ft.
1,060
Stories
10
Year built
1950
Building material
Wood/wood and steel frames
Rooms
5
Elevator
Bedrooms
3
Bathrooms
10
Lot
Acreage
2.07
Zoning & use
Zoning
Single Family Residential (R1-CSU-RV)
Units
1

Area overview

Walk score
50 /100.  Car-Dependent
Transit score
28 /100.  Some Transit
Bike score
36 /100.  Somewhat Bikeable
School district
CASTRO VLY UNIF SCH
Ownership

Ownership information for 20008 Gem Court, Castro Valley, CA

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

Sales history for 20008 Gem Court, Castro Valley, CA 94546

Sale date Sale price Buyer name Seller name
03/12/2010 $405,000 XXXXXX, XXXX X & XXXXXXX X XXXXX XXXXXX XXX
12/04/2009 $267,500 XXXXX XXXXXX XXX XXXXXXX XXXX XXXXXXX XXXX
07/26/2005 $580,000 XXXX, XXXXX XXXXXXXX, XXXXX

*Most recent sales on record for this property.

More about Alameda County property records.

Title documents

Date Type Amount Party 1 Party 2
05/20/2020 Deed of trust XXXXXX XXXXXX XXXXX XXXXXX XXX
08/31/2016 Deed of Trust XXXXXX XXXXXX XXXXX XXXX XXXX
01/08/2016 Deed of Trust XXXXXX XXXXXX XXXXX XXXX XXXX
01/08/2016 Grant Deed XXXXXX XXXXXXX X XXXXXX XXXXXX XXXXX
03/12/2013 Deed of Trust XXXXXX XXXXXXX X XXXX
03/12/2010 Deed XXXXX XXXXXX XXX XXXXXX, XXXX X & XXXXXXX X
12/04/2009 Deed XXXXXXX XXXX XXXXXXX XXXX XXXXX XXXXXX XXX
07/26/2005 Deed XXXXXXXX, XXXXX XXXX, XXXXX
01/21/2005 Deed XXXXXXXX, XXXXX XXXXXXXX, XXXXX
05/10/1999 Deed XXXXXXXX, XXXXX & XXXXXXX XXXXXXXX, XXXXX & XXXXXXX

*Most recent recorded documents on file for this property.

R: Recorded date
D: Document date

Tax

Property taxes for 20008 Gem 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
2026-2027
Base tax
$6,206
Current property tax
$6,125
Tax per sq. ft.
$6
Recent tax assessments
Market value
$533,198
Land value
$159,959
Building value
$373,239

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 $522,744 1.164 $6,085 +0.69%
2024-2025 $512,498 1.1791 $6,043 -48.84%
2023-2024 $502,450 2.3508 $11,812 +101.36%
2022-2023 $492,601 1.1908 $5,866 +2.51%
2021-2022 $482,945 1.1848 $5,722 +2.29%
2020-2021 $477,997 1.1703 $5,594 -1.99%
2019-2020 $468,624 1.218 $5,708 +2.87%
2018-2019 $459,440 1.2077 $5,549 +2.65%
2017-2018 $450,432 1.2001 $5,406 +18.18%
2016-2017 $441,603 1.0358 $4,574 -4.87%
Permits

Permit information for 20008 Gem Court, Castro Valley, CA

Issued date Permit number Permit type Sub type Valuation Finaled date Status
08/24/2023

*Most recent permit 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
A, 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 20008 Gem 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)
Independent Elementary School 8 Public K-5 634 0.36
Marshall Elementary School 9 Public K-5 491 0.49
Early Bird Montessori School NR Private PK, K-1 30 0.53
Early Bird Montessori School NR Private PK, K-1 30 0.53
Northstar School NR Private PK-8 152 0.63
Northstar School NR Private PK-8 152 0.63
Vannoy Elementary School 7 Public K-5 441 0.70
Special Education-Preschool-Laurel NR Public 1 1.01
Montessori School At Five Canyons NR Private PK-K 13 1.03
Castro Valley Adult And Career Education NR Public 0 1.06
Nearest middle schools

Name Rating Type Grade range No of students Distance (miles)
Creekside Middle School 8 Public 6-8 760 0.27
Canyon Middle School 6 Public 6-8 1,332 0.63
Northstar School NR Private PK-8 152 0.63
Special Education-Preschool-Laurel NR Public 1 1.01
Castro Valley Adult And Career Education NR Public 0 1.06
Alma Preschool NR Public 52 1.10
Redwood Christian Schools NR Private K-12 706 1.12
Our Lady Of Grace School NR Private K-8 218 1.45
Liberty School NR Private 1-12 0 1.48
Stellar Preparatory High School NR Private 9 0 1.62
Nearest high schools

Name Rating Type Grade range No of students Distance (miles)
Special Education-Preschool-Laurel NR Public 1 1.01
Castro Valley Adult And Career Education NR Public 0 1.06
Alma Preschool NR Public 52 1.10
Redwood Christian Schools NR Private K-12 706 1.12
Castro Valley High School 9 Public 9-12 2,799 1.25
Liberty School NR Private 1-12 0 1.48
Stellar Preparatory High School NR Private 9 0 1.62
Anchor Education, Inc. NR Private 3-12 18 1.85
Sterling West San Francisco Campus NR Private 3-11 27 1.87
Hayward High School 5 Public 9-12 1,712 1.89

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

Neighbors for 20008 Gem Court, Castro Valley, CA

4285 Veronica Ave, Castro Valley 4334 Gem Ave, Castro Valley 20068 Emerald CT, Castro Valley 4413 Gem Ave, Castro Valley 4267 Veronica Ave, Castro Valley 4261 Veronica Ave, Castro Valley 20113 Emerald CT, Castro Valley 20089 Emerald CT, Castro Valley 20216 Center St, Castro Valley 20324 Center St, Castro Valley 4522 Edwards Ln, Castro Valley 20329 Sapphire St, Castro Valley 20016 Gem CT, Castro Valley 20046 Emerald CT, Castro Valley 4534 Newhaven Way, Castro Valley 20048 Sapphire St, Castro Valley 4291 Veronica Ave, Castro Valley 4786 Noree CT, Castro Valley 20332 Center St, Castro Valley 19552 Center St, Castro Valley

Nearby ZIP codes for 20008 Gem Court, Castro Valley, CA

94541, Alameda County, CA 94542, Alameda County, CA 94544, Alameda County, CA 94545, Alameda County, CA 94552, Alameda County, CA 94577, Alameda County, CA 94578, Alameda County, CA 94579, Alameda County, CA 94580, Alameda County, CA 94601, Alameda County, CA 94603, Alameda County, CA 94605, Alameda County, CA 94613, Alameda County, CA 94619, Alameda County, CA 94621, Alameda County, CA

Frequently asked questions

What is the year built for 20008 Gem Court, Castro Valley, CA 94546?

The development at 20008 Gem Court, Castro Valley, CA 94546 was built in 1950.

What is the total square footage of 20008 Gem Court, Castro Valley, CA 94546?

20008 Gem Court, Castro Valley, CA 94546 has a total of 1,060 square feet.

When was 20008 Gem Court, Castro Valley, CA 94546 last sold and what was the sale price?

20008 Gem Court, Castro Valley, CA 94546 was last sold on 03/12/2010 for $405,000.

What is the assessed value of 20008 Gem Court, Castro Valley, CA 94546?

20008 Gem Court, Castro Valley, CA 94546 is currently assessed at $533,198.

What are the property taxes for 20008 Gem Court, Castro Valley, CA 94546?

The property taxes for 20008 Gem Court, Castro Valley, CA 94546 total $6,206.

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