Alameda County  »  94546  »  Aspen Ave  »  21101 Aspen Ave

21101 Aspen Avenue, Castro Valley, CA 94546 - Property report

Also known as: 21101 Aspen Ave

Property image for 21101 Aspen Avenue, Castro Valley, CA 94546
static Mapbox map

Property type

Single Family Residential Homes Used as Such (1100)

Year built

1954

Acreage

0.12

Sale price

$527,500

General Information

Address
Primary address
21101 Aspen Ave
Castro Valley, CA 94546
Zip code
94546
County
Alameda
Parcel ID
84C-626-2

Owner

Find out who owns 21101 Aspen Avenue, Castro Valley, CA 94546. Uncover corporate and individual owners with a free account.

Sales
Sale date
05/16/2014
Sale price
$527,500
Arm's length
Tax
Tax year
2025-2026
Property tax
$7,527
Tax per sq. ft.
$5
Building
Property type
Single Family Residential Homes Used as Such
Building sq. ft.
1,660
Stories
2
Year built
1954
Building material
Wood/wood and steel frames
Last altered
1955
Rooms
6
Elevator
Bedrooms
3
Bathrooms
1.5
Lot
Acreage
0.12
Zoning & use
Zoning
Cv Central Business District? Subarea 11, E (S11-E)
Units
1

Area overview

Walk score
80 /100.  Very Walkable
Transit score
42 /100.  Some Transit
Bike score
62 /100.  Bikeable
School district
CASTRO VLY UNIF SCH
Ownership

Ownership information for 21101 Aspen Avenue, Castro Valley, CA

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

Sales history for 21101 Aspen Avenue, Castro Valley, CA 94546

Sale date Sale price Buyer name Seller name
05/16/2014 $527,500 XXXX XXXXX X; XXX XXX XXXX XXXXXX XXXXXX X XXXXX; XXXXXX XXXXXX X XXXXX; XXXXXX XXXXXX X XX

*Most recent sale on record for this property.

More about Alameda County property records.

Title documents

Date Type Amount Party 1 Party 2
03/19/2021 Grant Deed XXXX XXXXX X XXXX XXXXXX XXXXX
02/11/2015 Deed of Trust XXXX XXXXX X XXX XXXXXXXX XXX
05/16/2014 Deed of Trust XXXX XXXXX X XXX XXXXXXXX XXX
05/16/2014 Grant Deed XXXXXX XXXXXX X XXXXX XXXX XXXXX X
05/16/2014 Declaration Trust XXXXXX XXXXXX X XXXXXX XXXXXX X XXXXX
05/16/2014 Appointment of Trustee XXXXXX XXXXXX X XX XXXXXX XXXXXX X XX
07/21/2000 Deed XXXXXX, XXXXXX X & XXXXXX X XXXXXX XXXXX

*Most recent recorded documents on file for this property.

R: Recorded date
D: Document date

Tax

Property taxes for 21101 Aspen Avenue, 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
$7,527
Tax per sq. ft.
$5
Recent tax assessments
Market value
$646,614
Land value
$193,923
Building value
$452,691

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 $646,614 1.164 $7,527 +0.69%
2024-2025 $633,938 1.1791 $7,475 -48.84%
2023-2024 $621,510 2.3508 $14,610 +101.36%
2022-2023 $609,324 1.1908 $7,256 +2.51%
2021-2022 $597,382 1.1848 $7,078 +2.29%
2020-2021 $591,258 1.1703 $6,919 -2.00%
2019-2020 $579,668 1.218 $7,060 +2.87%
2018-2019 $568,307 1.2077 $6,863 +2.65%
2017-2018 $557,166 1.2001 $6,687 +5.07%
2016-2017 $546,241 1.165 $6,364 +7.00%
Permits

Permit information for 21101 Aspen Avenue, Castro Valley, CA

No recently recorded permits 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, AE, AH, 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 21101 Aspen Avenue, 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 0.37
Special Education-Preschool-Laurel NR Public 1 0.43
Vita Academy NR Private 1-6 0 0.60
Castro Valley Elementary School 6 Public K-5 472 0.79
Early Bird Montessori School NR Private PK, K-1 30 0.79
Early Bird Montessori School NR Private PK, K-1 30 0.79
Northstar School NR Private PK-8 152 0.88
Northstar School NR Private PK-8 152 0.88
Castro Valley Adult And Career Education NR Public 0 1.02
Alma Preschool NR Public 52 1.03
Nearest middle schools

Name Rating Type Grade range No of students Distance (miles)
Special Education-Preschool-Laurel NR Public 1 0.43
Creekside Middle School 8 Public 6-8 760 0.61
Northstar School NR Private PK-8 152 0.88
Our Lady Of Grace School NR Private K-8 218 0.93
Redwood Christian Schools NR Private K-12 706 0.98
Castro Valley Adult And Career Education NR Public 0 1.02
Alma Preschool NR Public 52 1.03
Stellar Preparatory High School NR Private 9 0 1.14
Faith Ringgold School of Arts and Science 1 Public K-8 111 1.22
Canyon Middle School 6 Public 6-8 1,332 1.25
Nearest high schools

Name Rating Type Grade range No of students Distance (miles)
Special Education-Preschool-Laurel NR Public 1 0.43
Castro Valley High School 9 Public 9-12 2,799 0.95
Redwood Christian Schools NR Private K-12 706 0.98
Castro Valley Adult And Career Education NR Public 0 1.02
Alma Preschool NR Public 52 1.03
Stellar Preparatory High School NR Private 9 0 1.14
Anchor Education, Inc. NR Private 3-12 18 1.40
Sterling West San Francisco Campus NR Private 3-11 27 1.42
Anchor Education, Inc. School NR Private 3-12 0 1.42
Hayward High School 5 Public 9-12 1,712 1.55

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

Neighbors for 21101 Aspen Avenue, Castro Valley, CA

4312 Circle Ave, Castro Valley 4321 Circle Ave, Castro Valley 21100 Aspen Ave, Castro Valley 4357 Circle Ave, Castro Valley 21148 Aspen Ave, Castro Valley 4370 Circle Ave, Castro Valley 4463 Edwards Ln, Castro Valley 4255 Circle Ave, Castro Valley 4327 Circle Ave, Castro Valley 4345 Circle Ave, Castro Valley 3849 Castro Valley Blvd, Castro Valley 4338 Shamrock Way, Castro Valley 4457 Edwards Ln, Castro Valley 4346 Circle Ave, Castro Valley 4451 Edwards Ln, Castro Valley 4340 Omega Ave, Castro Valley 4317 Circle Ave, Castro Valley 4352 Circle Ave, Castro Valley 4337 Shamrock Way, Castro Valley 4351 Circle Ave, Castro Valley

Nearby ZIP codes for 21101 Aspen Avenue, 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 21101 Aspen Avenue, Castro Valley, CA 94546?

The development at 21101 Aspen Avenue, Castro Valley, CA 94546 was built in 1954.

What is the total square footage of 21101 Aspen Avenue, Castro Valley, CA 94546?

21101 Aspen Avenue, Castro Valley, CA 94546 has a total of 1,660 square feet.

When was 21101 Aspen Avenue, Castro Valley, CA 94546 last sold and what was the sale price?

21101 Aspen Avenue, Castro Valley, CA 94546 was last sold on 05/16/2014 for $527,500.

What is the assessed value of 21101 Aspen Avenue, Castro Valley, CA 94546?

21101 Aspen Avenue, Castro Valley, CA 94546 is currently assessed at $646,614.

What are the property taxes for 21101 Aspen Avenue, Castro Valley, CA 94546?

The property taxes for 21101 Aspen Avenue, Castro Valley, CA 94546 total $7,526.

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