Alameda County  »  94546  »  Santa Maria Ave  »  18912 Santa Maria Ave

18912 Santa Maria Avenue, Castro Valley, CA 94546 - Property report

Also known as: 18912 Santa Maria Ave

Property image for 18912 Santa Maria Avenue, Castro Valley, CA 94546
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Property type

2 Units, Single Family Residence with Attached Accessory Dwelling Unit (2501)

Year built

1948

Acreage

0.12

Sale price

$865,000

General Information

Address
Primary address
18912 Santa Maria Ave
Castro Valley, CA 94546
Zip code
94546
County
Alameda
Parcel ID
84D-1341-62

Owner

Find out who owns 18912 Santa Maria Avenue, Castro Valley, CA 94546. Uncover corporate and individual owners with a free account.

Sales
Sale date
10/16/2020
Sale price
$865,000
Arm's length
Tax
Tax year
2025-2026
Base tax
$11,881
Current property tax
$11,799
Tax per sq. ft.
$11
Building
Property type
2 Units, Single Family Residence with Attached Accessory Dwelling Unit
Building sq. ft.
1,092
Stories
1
Year built
1948
Building material
Wood/wood and steel frames
Last altered
1959
Rooms
5
Elevator
Bedrooms
3
Bathrooms
2
Lot
Acreage
0.12
Zoning & use
Zoning
Single Family Residential (R1-CSU-RV)
Units
1

Area overview

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

Ownership information for 18912 Santa Maria Avenue, Castro Valley, CA

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

Sales history for 18912 Santa Maria Avenue, Castro Valley, CA 94546

Sale date Sale price Buyer name Seller name
10/16/2020 $865,000 XXXXXX XXXXXXXXX; XXXXXXXXX XXXXXX XXX XXXXXXXX; XX XX XXXX
09/07/2017 $705,000 XXX XXXXXXXX; XX XX XXXX XXXXX XXXX X
09/28/1998 $77,000 XXXXX, XXXXXX X & XXXX X XXXXX, XXXX X

*Most recent sales on record for this property.

More about Alameda County property records.

Title documents

Date Type Amount Party 1 Party 2
01/26/2023 Declaration restrictions XXXXXX XXXXXXXXX
10/16/2020 Deed of trust XXXXXX XXXXXXXXX XXXXXXX XXXX XXXXX XXX
10/16/2020 Grant Deed XXX XXXXXXXX XXXXXX XXXXXXXXX
04/15/2020 Reconveyance
Substitution of trustee		 XXX XXXXXXXX XXX XXXXXXXX
02/13/2020 Deed of trust XXX XXXXXXXX XXXXXXXXXX XXXX XXXXX
09/07/2017 Deed of Trust XXX XXXXXXXX XXXXXXX XXX
09/07/2017 Grant Deed XXXXX XXXX X XXX XXXXXXXX
10/08/1998 Deed XXXXX, XXXXXX X XXXXX, XXXXXX X
09/28/1998 Deed XXXXX, XXXX X XXXXX, XXXXXX X & XXXX X
08/11/1998 Deed XXXXX, XXXX X XXXXX, XXXX X

*Most recent recorded documents on file for this property.

R: Recorded date
D: Document date

Tax

Property taxes for 18912 Santa Maria 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
Base tax
$11,881
Current property tax
$11,799
Tax per sq. ft.
$11
Recent tax assessments
Market value
$1,020,668
Land value
$280,887
Building value
$739,781

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 $1,020,668 1.164 $11,881 +5.11%
2024-2025 $958,635 1.1791 $11,303 -46.57%
2023-2024 $899,945 2.3508 $21,156 +101.36%
2022-2023 $882,300 1.1908 $10,506 +2.51%
2021-2022 $865,000 1.1848 $10,249 +19.40%
2020-2021 $733,481 1.1703 $8,584 -1.51%
2019-2020 $719,100 1.212 $8,715 +2.36%
2018-2019 $705,000 1.2077 $8,514 +268.22%
2017-2018 $192,676 1.2001 $2,312 +18.54%
2016-2017 $188,900 1.0326 $1,951 -5.16%
Permits

Permit information for 18912 Santa Maria Avenue, Castro Valley, CA

Issued date Permit number Permit type Sub type Valuation Finaled date Status

*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 18912 Santa Maria 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)
Redwood Christian Schools NR Private K-12 706 0.28
Alma Preschool NR Public 52 0.33
Redwood Christian Elementary School NR Private K-5 282 0.34
Castro Valley Adult And Career Education NR Public 0 0.37
Proctor Elementary School 8 Public K-5 584 0.56
Chabot Elementary School 8 Public K-5 470 0.65
The Montessori Giving Tree NR Private K-6 7 0.67
Our Lady Of Grace School NR Private K-8 218 0.67
Anchor Education, Inc. NR Private 3-12 18 0.68
Castro Valley Elementary School 6 Public K-5 472 0.78
Nearest middle schools

Name Rating Type Grade range No of students Distance (miles)
Redwood Christian Schools NR Private K-12 706 0.28
Alma Preschool NR Public 52 0.33
Castro Valley Adult And Career Education NR Public 0 0.37
Our Lady Of Grace School NR Private K-8 218 0.67
Anchor Education, Inc. NR Private 3-12 18 0.68
Sterling West San Francisco Campus NR Private 3-11 27 0.69
Anchor Education, Inc. School NR Private 3-12 0 0.70
Castro Valley Virtual Academy 7 Public K-12 67 0.82
Creekside Middle School 8 Public 6-8 760 1.13
Canyon Middle School 6 Public 6-8 1,332 1.44
Nearest high schools

Name Rating Type Grade range No of students Distance (miles)
Castro Valley High School 9 Public 9-12 2,799 0.27
Redwood Christian Schools NR Private K-12 706 0.28
Alma Preschool NR Public 52 0.33
Castro Valley Adult And Career Education NR Public 0 0.37
Anchor Education, Inc. NR Private 3-12 18 0.68
Sterling West San Francisco Campus NR Private 3-11 27 0.69
Anchor Education, Inc. School NR Private 3-12 0 0.70
Redwood Continuation High School 3 Public 9-12 122 0.82
Castro Valley Virtual Academy 7 Public K-12 67 0.82
Roy A. Johnson High School NR Public 9-12 24 0.82

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

Neighbors for 18912 Santa Maria Avenue, Castro Valley, CA

18958 Santa Maria Ave, Castro Valley 3930 Bonsai Pl, Castro Valley 18966 Santa Maria Ave, Castro Valley 4448 Ewing Rd, Castro Valley 18816 Cameo CT, Castro Valley 3781 Cottage CT, Castro Valley 4031 Seven Hills Rd, Castro Valley 4633 Grenadier Pl, Castro Valley 3711 Cottage CT, Castro Valley 4269 Seven Hills Rd, Castro Valley 18840 Cameo CT, Castro Valley 18990 Santa Maria Ave, Castro Valley 18904 Santa Maria Ave, Castro Valley 18890 Santa Maria Ave, Castro Valley 18808 Cameo CT, Castro Valley 4440 Ewing Rd, Castro Valley 19105 Parsons Ave, Castro Valley 3958 Wilson Ave, Castro Valley 19113 Parsons Ave, Castro Valley 4419 Ewing Rd, Castro Valley

Nearby ZIP codes for 18912 Santa Maria 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 18912 Santa Maria Avenue, Castro Valley, CA 94546?

The development at 18912 Santa Maria Avenue, Castro Valley, CA 94546 was built in 1948.

What is the total square footage of 18912 Santa Maria Avenue, Castro Valley, CA 94546?

18912 Santa Maria Avenue, Castro Valley, CA 94546 has a total of 1,092 square feet.

When was 18912 Santa Maria Avenue, Castro Valley, CA 94546 last sold and what was the sale price?

18912 Santa Maria Avenue, Castro Valley, CA 94546 was last sold on 10/16/2020 for $865,000.

What is the assessed value of 18912 Santa Maria Avenue, Castro Valley, CA 94546?

18912 Santa Maria Avenue, Castro Valley, CA 94546 is currently assessed at $1,020,668.

What are the property taxes for 18912 Santa Maria Avenue, Castro Valley, CA 94546?

The property taxes for 18912 Santa Maria Avenue, Castro Valley, CA 94546 total $11,880.

How many residential units does this building have?

This building has 1 residential unit(s).

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