16845 Hallmark Ct, Castro Valley, CA 94552 Property Records

Alameda County property record for 16845 Hallmark Ct, Castro Valley, CA 94552

Property Summary

Property Type	Single Family Home
Details	4 bd · 2.5 ba · 2,216 sqft · built 1987
Lot Size	0.239 acres (10,400 sqft)
Owner	Company Name on Record
Tax Bill	$6,087 (2025)
Deeds & Mortgages	Jan 2020 Line of Credit Apr 2018 Line of Credit
Flood Zone	Zone X (minimal risk)
APN	`85-6314-59`

Property Details

APN / Parcel Number

Primary APN	`85-6314-59`
Alternative APN	`085-6314-059-00`

Interior

Bedrooms	4 Beds
Full Baths	2.5 Baths
Half Baths	1 Half Bath
Total Rooms	8 Rooms
Stories	1 Story
Building Area	2,216 sqft Living Area

Exterior

Year Built	Built 1987
Effective Year Built	Effective 1987
Architectural Style	L-Shape
Construction Type	Wood
Lot Area	10,400 sqft (0.239 acres)

Location & Zoning

Street Address	16845 HALLMARK CT
City	CASTRO VALLEY
State	CA
Zip	94552-1632
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Description	LOT: 00053 BLK: TR: 5055
Legal Tract	5055
Legal Lot Number	53
Jurisdiction	ALAMEDA CA
Township / Civil Division	HAYWARD
Census Block Group	1
Census Block	1001
Census Tract	430200

Owner

Source: Alameda County records, as of August 5, 2026

Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.

Owner of Record	Company Name on Record
Mailing Address	16845 HALLMARK CT, CASTRO VALLEY, CA 94552-1632
Occupancy	Owner Occupied
Owner Type	Company
Vesting	Trust

Deeds, Mortgages & Sale History

Date	Document
Jan 24, 2020	Deed of Trust, Mortgage · Line of Credit FREMONT BANK
Apr 16, 2018	Deed of Trust, Mortgage · Line of Credit FREMONT BK

Assessor's Deed Record

Deed Names	Name on Deed
Last Transfer Date	May 6, 2004
Transfer Doc	0000328872
Record Updated	Sep 20, 2026

January 2020: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	ALAMEDA CA
Property Address	16845 HALLMARK CT, CASTRO VALLEY, CA 94552-1632
Transaction Type	Mortgage
Record Updated	Feb 5, 2021
Title Company	FIDELITY NATIONAL TITLE CO

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0000016000
Date	Jan 24, 2020
Instrument	2020016000

Lender

Name	FREMONT BANK
Type	Bank
Address	LIVERMORE, CA 94551

Agreement

Type	Line of Credit
Amount	Amount Recorded
Term	360 Months
Due	Jan 22, 2050

Interest

Rate Type	Adjustable Rate
Change Frequency	Monthly

April 2018: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	ALAMEDA CA
Property Address	16845 HALLMARK CT, CASTRO VALLEY, CA 94552-1632
Document Number	0000079250
Instrument Date	Apr 16, 2018
Transaction Type	Mortgage
Record Updated	May 7, 2018
Title Company	FIRST AMERICAN TITLE

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Personal Trust
Address	16845 HALLMARK CT CASTRO VALLEY CA 945521632, CASTRO VALLEY, CA 94552-1632

Mortgage

Document Number	0000079250
Date	Apr 20, 2018
Instrument	79250

Lender

Name	FREMONT BK
Type	Bank
Address	LIVERMORE, CA 94551

Agreement

Type	Line of Credit
Amount	Amount Recorded
Term	360 Months
Due	Apr 19, 2048

Interest

Rate Type	Adjustable Rate

Tax Assessment & Valuation

Source: Alameda County assessment roll, as of August 5, 2026

Property Jurisdictions

Type	Name
State	California
County	Alameda County
Unified School District	Castro Valley Unified School District (KG - 12)

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value	Assessed Market Value
2026		$451,211 (+0.44%) Land $190,971 Building $267,240
2025	$6,087.00 (+4.28%) Homeowner's exemption	$449,228 (+4.04%) Land $187,227 Building $262,001
2023	$5,837.00 Homeowner's exemption	$431,784 Land $179,957 Building $251,827	$1,430,730

Assessed value and assessed market value are set for property tax purposes and are not market price estimates.

Flood

Source: FEMA National Flood Hazard Layer, effective May 25, 2026

FEMA Flood Zone	Zone X minimal risk
Flood Insurance Requirement	Not required lenders may require it

Values are read at the parcel center point; lenders make the official flood determination.

Wildfire

Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024

Wildfire Risk	High above 71% of the US · above 46% of California
Wildfire Likelihood	0.3% annual chance
Exposure	Indirect within ember reach
Adjoins Burnable Land	Yes

Values cover an area roughly 900 ft across, not the parcel itself; insurers use their own ratings.

Drinking Water

Source: EPA Safe Drinking Water Information System, as of September 2026

Water System	EAST BAY MUD serves 1,468,000 people · EPA ID CA0110005
Water Source	Surface water
Last State Inspection	Dec 2021
Lead	Under 1 ppb (2022–2024) action level 15 ppb

Violations Reported to EPA

Water Quality	None last 10 years
Treatment and Procedure	None last 10 years
Monitoring and Reporting	None last 3 years

Results are for the whole water system, not water tested at this address; lead at the tap also depends on the building's own pipes. This system sells water to local utilities; the supplier billing this address may be one of them.

Internet Providers

Source: FCC Broadband Data Collection, based on 153 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
Xfinity Cable	2,000 / 250
Verizon Fixed Wireless	300 / 20
Etheric Networks Fixed Wireless	250 / 100
T-Mobile Fixed Wireless	100 / 20
AT&T DSL	100 / 20

May also be available: Unwired.

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