Alameda County  »  94546  »  Knoll Way  »  21679 Knoll Way

21679 Knoll Way, Castro Valley, CA 94546 - Property report

Also known as: 21679 Knoll Way

Property image for 21679 Knoll Way, Castro Valley, CA 94546
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Property type

Single Family Residential Homes Used as Such (1100)

Year built

1964

Acreage

0.18

Sale price

$730,000

General Information

Address
Primary address
21679 Knoll Way
Castro Valley, CA 94546
Zip code
94546
County
Alameda
Parcel ID
415-190-21

Owner

Find out who owns 21679 Knoll Way, Castro Valley, CA 94546. Uncover corporate and individual owners with a free account.

Sales
Sale date
02/02/2007
Sale price
$730,000
Arm's length
Tax
Tax year
2025-2026
Base tax
$6,634
Current property tax
$6,552
Tax per sq. ft.
$4
Building
Property type
Single Family Residential Homes Used as Such
Building sq. ft.
1,810
Stories
1
Year built
1964
Building material
Wood/wood and steel frames
Last altered
1965
Rooms
7
Elevator
Bedrooms
4
Bathrooms
2
Lot
Acreage
0.18
Zoning & use
Zoning
Single Family Residential (R1-CSU-RV)
Units
1

Area overview

Walk score
48 /100.  Car-Dependent
Transit score
45 /100.  Some Transit
Bike score
42 /100.  Somewhat Bikeable
School district
HAYWARD UNIF SCH
Ownership

Ownership information for 21679 Knoll Way, Castro Valley, CA

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

Sales history for 21679 Knoll Way, Castro Valley, CA 94546

Sale date Sale price Buyer name Seller name
02/02/2007 $730,000 XXXXXXX, XXXXX X & XXXX X XXXXXX, XXXXXXX X
04/22/2003 $509,000 XXXXXXXX, XXXXXXX X XXXXX, XXXXXXX X
08/31/2000 $350,000 XXXXX, XXXXXXX X XXXXXX XXXXX

*Most recent sales on record for this property.

More about Alameda County property records.

Title documents

Date Type Amount Party 1 Party 2
11/19/2013 Trust Transfer Deed XXXXX XXXX XXX XXXXX & XXX XXXXXX XXXXX
11/19/2013 Grant Deed XXXXX XXXX X XXXXX XXXX XXX
09/28/2012 Deed of Trust XXXXX XXXX X XXXXX XXXXX XXXX
02/02/2007 Deed XXXXXX, XXXXXXX X XXXXXXX, XXXXX X & XXXX X
02/02/2007 Deed XXXXXXXX, XXXXXXX X XXXXXX, XXXXXXX X
04/22/2003 Deed XXXXX, XXXXXXX X XXXXXXXX, XXXXXXX X
08/31/2000 Deed XXXXXX XXXXX XXXXX, XXXXXXX X

*Most recent recorded documents on file for this property.

R: Recorded date
D: Document date

Tax

Property taxes for 21679 Knoll Way, 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
$6,634
Current property tax
$6,552
Tax per sq. ft.
$4
Recent tax assessments
Market value
$565,818
Land value
$169,745
Building value
$396,073

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 $565,818 1.1724 $6,634 +0.98%
2024-2025 $554,728 1.1842 $6,569 -22.76%
2023-2024 $543,854 1.5638 $8,505 +34.17%
2022-2023 $533,192 1.1888 $6,339 +0.82%
2021-2022 $522,738 1.2028 $6,287 +1.16%
2020-2021 $517,381 1.2012 $6,215 -0.87%
2019-2020 $507,240 1.236 $6,269 +6.95%
2018-2019 $497,298 1.1788 $5,862 +2.50%
2017-2018 $487,550 1.173 $5,719 +5.58%
2016-2017 $477,993 1.1332 $5,417 +2.16%
Permits

Permit information for 21679 Knoll Way, Castro Valley, CA

Issued date Permit number Permit type Sub type Valuation Finaled date Status
05/11/2026
08/04/2022
04/21/2022
11/23/2021

*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 21679 Knoll Way, 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)
The Montessori Giving Tree NR Private K-6 12 0.25
Strobridge Elementary School NR Public K-6 362 0.34
Liber Community School NR Private 4-12 0 0.36
Crossroads Christian Elementary School NR Private K-6 0 0.72
Vita Academy NR Private 1-6 0 0.74
Faith Ringgold School of Arts and Science 1 Public K-8 111 0.87
Special Education-Preschool-Laurel NR Public 1 0.87
Harder Elementary School 3 Public K-6 675 0.88
Knowledge Enlightens You (Key) Academy 5 Charter K-8 614 0.88
Cherryland Elementary School 3 Public K-6 903 0.92
Nearest middle schools

Name Rating Type Grade range No of students Distance (miles)
Liber Community School NR Private 4-12 0 0.36
Stellar Preparatory High School NR Private 9 0 0.87
Faith Ringgold School of Arts and Science 1 Public K-8 111 0.87
Special Education-Preschool-Laurel NR Public 1 0.87
Knowledge Enlightens You (Key) Academy 5 Charter K-8 614 0.88
All Saints Catholic School NR Private K-8 203 0.92
Hayward Adult NR Public 0 1.01
Bret Harte Middle School 5 Public 7-8 545 1.07
Our Lady Of Grace School NR Private K-8 218 1.20
Victory Academy NR Private 7, 9-11 0 1.43
Nearest high schools

Name Rating Type Grade range No of students Distance (miles)
Liber Community School NR Private 4-12 0 0.36
Stellar Preparatory High School NR Private 9-11 26 0.79
Stellar Preparatory High School NR Private 9 0 0.87
Special Education-Preschool-Laurel NR Public 1 0.87
Hayward Adult NR Public 0 1.01
Brenkwitz High School 2 Public 9-12 179 1.04
Hayward High School 5 Public 9-12 1,712 1.34
Victory Academy NR Private 7, 9-11 0 1.43
Anchor Education, Inc. School NR Private 3-12 0 1.56
Castro Valley High School 9 Public 9-12 2,799 1.57

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

Neighbors for 21679 Knoll Way, Castro Valley, CA

21674 Gail Dr, Castro Valley 21686 Gail Dr, Castro Valley 21698 Gail Dr, Castro Valley 21731 Shadyspring Rd, Castro Valley 21779 Shadyspring Rd, Castro Valley 21611 Gail Dr, Castro Valley 21643 Gail Dr, Castro Valley 21501 Gail Dr, Castro Valley 21651 Gail Dr, Castro Valley 21472 Gary Dr, Castro Valley 21707 Shadyspring Rd, Castro Valley 21685 Knoll Way, Castro Valley 21683 Shadyspring Rd, Castro Valley 21708 Knoll Way, Castro Valley 21695 Shadyspring Rd, Castro Valley 21733 Gail Dr, Castro Valley 21742 Gail Dr, Castro Valley 21679 Gail Dr, Castro Valley 21508 Gail Dr, Castro Valley 21650 Gail Dr, Castro Valley

Nearby ZIP codes for 21679 Knoll Way, 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 21679 Knoll Way, Castro Valley, CA 94546?

The development at 21679 Knoll Way, Castro Valley, CA 94546 was built in 1964.

What is the total square footage of 21679 Knoll Way, Castro Valley, CA 94546?

21679 Knoll Way, Castro Valley, CA 94546 has a total of 1,810 square feet.

When was 21679 Knoll Way, Castro Valley, CA 94546 last sold and what was the sale price?

21679 Knoll Way, Castro Valley, CA 94546 was last sold on 02/02/2007 for $730,000.

What is the assessed value of 21679 Knoll Way, Castro Valley, CA 94546?

21679 Knoll Way, Castro Valley, CA 94546 is currently assessed at $565,818.

What are the property taxes for 21679 Knoll Way, Castro Valley, CA 94546?

The property taxes for 21679 Knoll Way, Castro Valley, CA 94546 total $6,633.

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