Alameda County  »  94542  »  Blackstone CT  »  3879 Blackstone CT

3879 Blackstone Court, Hayward, CA 94542 - Property report

Also known as: 3879 Blackstone CT

Property image for 3879 Blackstone Court, Hayward, CA 94542
static Mapbox map

Property type

Single Family Residential Homes Used as Such (1100)

Year built

1998

Acreage

1.22

Sale price

$2,000,000

General Information

Address
Primary address
3879 Blackstone Ct
Hayward, CA 94542
Zip code
94542
County
Alameda
Parcel ID
417-284-20

Owner

Find out who owns 3879 Blackstone Court, Hayward, CA 94542. Uncover corporate and individual owners with a free account.

Sales
Sale date
08/19/2025
Sale price
$2,000,000
Arm's length
Tax
Tax year
2025-2026
Base tax
$16,661
Current property tax
$16,580
Tax per sq. ft.
$5
Building
Property type
Single Family Residential Homes Used as Such
Building sq. ft.
3,682
Stories
2
Year built
1998
Building material
Wood/wood and steel frames
Rooms
11
Elevator
Bedrooms
5
Bathrooms
3.5
Lot
Acreage
1.22
Zoning & use
Zoning
Planned Development (PD-1985)
Units
1

Area overview

Walk score
0 /100.  Car-Dependent
Transit score
0 /100.  Minimal Transit
Bike score
4 /100.  Somewhat Bikeable
School district
CASTRO VLY UNIF SCH
Ownership

Ownership information for 3879 Blackstone Court, Hayward, CA

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

Sales history for 3879 Blackstone Court, Hayward, CA 94542

Sale date Sale price Buyer name Seller name
08/19/2025 $2,000,000 XXXX XXXXXXXXX; XXXX XXXXXXXXXX XXXXXXXXX XXXXX XXXXXXX XXXXXX; XXXXXXXXX XXXXX XXXXXXX
05/10/2001 $950,000 XXXXXXXXX, XXXXX X XXXXXX, XXXXXX X & XXXXXX X
03/17/1998 $480,000 XXXXXX, XXXXXX X & XXXXXX X XXXXXX XXXXXXXXXXXXX XXX

*Most recent sales on record for this property.

More about Alameda County property records.

Title documents

Date Type Amount Party 1 Party 2
09/18/2025 Reconveyance XXXXXXXXX XXXXX XXXXXXX XXXXXX
08/19/2025 Deed of trust XXXX XXXXXXXXX XXXX XXXX
08/19/2025 Grant Deed XXXXXXXXX XXXXX XXXXXXX XXXXXX XXXX XXXXXXXXX
08/19/2025 Cancellation XXXXXXXXX XXXXXXXXXXX XXXXXXXXX XXXXX X
08/19/2025 Ucc amendment(3&+ pgs) XXXXX XXX XXXXXXXXX XXXXX X
12/02/2019 Ucc Amendment(3&+ PGS) XXXXX XXX XXXXXXXXX XXXXX XXXXXXX XXXXXX XX
12/02/2019 Deed of Trust XXXXXXXXX XXXXX XXXXXXX XXXXXX XXXX XXXX
02/28/2018 Quitclaim Deed XXXXXXXXX XXXXX XXXXXXX XXXXXX XX XXXXXXXXX XXXXX XXXXXXX XXXXXX
02/28/2018 Deed of Trust XXXXXXXXX XXXXX XXXXXXX XXXXXX XXXXXXXXX
02/27/2018 Reconveyance
Substitution of Trustee		 XXXXXXXXX & XXXXXX XXXXXX XXXXX XXXXX XXXXXXXX XXXXX XXXXXXXXX XX

*Most recent recorded documents on file for this property.

R: Recorded date
D: Document date

Tax

Property taxes for 3879 Blackstone Court, Hayward, 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
$16,661
Current property tax
$16,580
Tax per sq. ft.
$5
Recent tax assessments
Market value
$1,431,393
Land value
$429,418
Building value
$1,001,975

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 $1,431,393 1.164 $16,661 +0.69%
2024-2025 $1,403,330 1.1791 $16,547 -48.84%
2023-2024 $1,375,817 2.3508 $32,343 +101.36%
2022-2023 $1,348,847 1.1908 $16,062 +2.52%
2021-2022 $1,322,400 1.1848 $15,668 +2.29%
2020-2021 $1,308,843 1.1703 $15,317 -1.99%
2019-2020 $1,283,183 1.218 $15,629 +2.87%
2018-2019 $1,258,027 1.2077 $15,193 +2.65%
2017-2018 $1,233,365 1.2001 $14,802 +5.07%
2016-2017 $1,209,187 1.165 $14,087 +7.00%
Permits

Permit information for 3879 Blackstone Court, Hayward, CA

Issued date Permit number Permit type Sub type Valuation Finaled date Status
03/03/2015

*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
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 3879 Blackstone Court, Hayward, CA 94542 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)
Fairview Elementary School 4 Public K-6 562 0.74
East Avenue Elementary School 4 Public K-6 426 0.93
Montessori School At Five Canyons NR Private PK-K 13 0.94
Montessori School At Five Canyons NR Private PK-K 13 0.94
Northstar School NR Private PK-8 152 1.08
Northstar School NR Private PK-8 152 1.08
Liber Academy of Hayward NR Private 1-12 0 1.39
Palomares Elementary School 8 Public K-5 121 1.40
Independent Elementary School 8 Public K-5 634 1.56
Special Education-Preschool-Laurel NR Public 1 1.80
Nearest middle schools

Name Rating Type Grade range No of students Distance (miles)
Northstar School NR Private PK-8 152 1.08
Liber Academy of Hayward NR Private 1-12 0 1.39
Northstar School NR Private K-7 0 1.47
Victory Academy NR Private 7, 9-11 0 1.69
Stellar Preparatory High School NR Private 9 0 1.76
Special Education-Preschool-Laurel NR Public 1 1.80
Faith Ringgold School of Arts and Science 1 Public K-8 111 1.81
Creekside Middle School 8 Public 6-8 760 1.91
Canyon Middle School 6 Public 6-8 1,332 2.02
Silver Oak High Public Montessori Charter NR Charter 1-12 553 2.09
Nearest high schools

Name Rating Type Grade range No of students Distance (miles)
Liber Academy of Hayward NR Private 1-12 0 1.39
Hayward High School 5 Public 9-12 1,712 1.54
Victory Academy NR Private 7, 9-11 0 1.69
Stellar Preparatory High School NR Private 9 0 1.76
Special Education-Preschool-Laurel NR Public 1 1.80
Silver Oak High Public Montessori Charter NR Charter 1-12 553 2.09
Hayward Twin Oaks Montessori 7 Charter 1-12 218 2.19
Stellar Preparatory High School NR Private 9-11 26 2.43
Moreau Catholic High School NR Private 9-12 836 2.59
Castro Valley Adult And Career Education NR Public 0 2.71

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

Neighbors for 3879 Blackstone Court, Hayward, CA

25170 Century Oaks Cir, Castro Valley 3 N Canyon CT, Castro Valley 22658 Canyon Terrace Dr, Castro Valley 25138 Century Oaks Cir, Castro Valley 25178 Century Oaks Cir, Castro Valley 25218 Century Oaks Cir, Castro Valley 25219 Canyon Oaks CT, Castro Valley 25209 Canyon Oaks CT, Castro Valley 23170 Canyon Terrace Dr, Castro Valley 25198 Century Oaks Cir, Castro Valley 25210 Century Oaks Cir, Castro Valley 22789 Canyon Terrace Dr, Castro Valley 5618 Gold Creek Dr, Castro Valley 3658 Pinon Canyon CT, Castro Valley 3630 Pinon Canyon CT, Castro Valley 3610 Pinon Canyon CT, Castro Valley 25229 Century Oaks Cir, Castro Valley 25219 Century Oaks Cir, Castro Valley 3830 N Canyon CT, Castro Valley 5519 Gold Creek Dr, Castro Valley

Nearby ZIP codes for 3879 Blackstone Court, Hayward, CA

94555, Alameda County, CA 94560, Alameda County, CA 94579, Alameda County, CA 94619, Alameda County, CA

Frequently asked questions

What is the year built for 3879 Blackstone Court, Hayward, CA 94542?

The development at 3879 Blackstone Court, Hayward, CA 94542 was built in 1998.

What is the total square footage of 3879 Blackstone Court, Hayward, CA 94542?

3879 Blackstone Court, Hayward, CA 94542 has a total of 3,682 square feet.

When was 3879 Blackstone Court, Hayward, CA 94542 last sold and what was the sale price?

3879 Blackstone Court, Hayward, CA 94542 was last sold on 08/19/2025 for $2,000,000.

What is the assessed value of 3879 Blackstone Court, Hayward, CA 94542?

3879 Blackstone Court, Hayward, CA 94542 is currently assessed at $1,431,393.

What are the property taxes for 3879 Blackstone Court, Hayward, CA 94542?

The property taxes for 3879 Blackstone Court, Hayward, CA 94542 total $16,661.

Disclaimer

Copyright 2003-2026 by PropertyShark.com

All data comes from government sources. No attempt has been made to validate it. No attempt has been made to validate the accuracy of the programming of this website.

Do not rely on this report to support investment decisions. The only authoritative source for the information in this report is the government agencies from which the data was acquired.

Sign up for a free account