16889 Hallmark Ct, Castro Valley, CA 94552 Property Records

Alameda County property record for 16889 Hallmark Ct, Castro Valley, CA 94552

Property Summary

Property Type	Single Family Home
Details	4 bd · 3 ba · 2,313 sqft · built 1987
Lot Size	0.184 acres (8,000 sqft)
Owner	Company Name on Record
Last Sale	$710,000 (Aug 2009)
Tax Bill	$11,663 (2025)
Deeds & Mortgages	Nov 2018 Transfer Nov 2018 Transfer
Flood Zone	Zone X (minimal risk)
APN	`85-6314-64`

Property Details

APN / Parcel Number

Primary APN	`85-6314-64`
Alternative APN	`085-6314-064-00`

Interior

Bedrooms	4 Beds
Full Baths	2.5 Baths
Half Baths	1 Half Bath
Total Rooms	8 Rooms
Stories	2 Stories
Building Area	2,313 sqft Living Area

Exterior

Year Built	Built 1987
Effective Year Built	Effective 1987
Architectural Style	L-Shape
Construction Type	Wood
Lot Area	8,000 sqft (0.184 acres)
Parking Spaces	3 Parking Spaces

Location & Zoning

Street Address	16889 HALLMARK CT
City	CASTRO VALLEY
State	CA
Zip	94552-1632
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Description	LOT: 00048 BLK: TR: 5055
Legal Tract	5055
Legal Lot Number	48
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	16889 HALLMARK CT, CASTRO VALLEY, CA 94552-1632
Occupancy	Owner Occupied
Owner Type	Company
Vesting	Trust

Deeds, Mortgages & Sale History

Date	Document
Nov 21, 2018	Quit Claim Deed, Transfer ATTORNEY ONLY
Nov 21, 2018	Quit Claim Deed, Transfer ATTORNEY ONLY

Assessor's Deed Record

Deed Names	Name on Deed
Last Sale	Aug 4, 2009 · Amount on Record
Deed Sale	Aug 4, 2009 · Amount on Record
Deed Document Number	2009249107
Last Transfer Date	Nov 7, 2018
Transfer Doc	0000223045
Record Updated	Oct 29, 2026

November 2018: Quit Claim Deed, Transfer

Document Type	Quit Claim Deed
Jurisdiction	ALAMEDA CA
Recording Date	Nov 21, 2018
Property Address	16889 HALLMARK CT, CASTRO VALLEY, CA 94552-1632
Document Number	0000223045
Instrument Date	Nov 7, 2018
Instrument	223045
Transaction Type	Transfer
Record Updated	Dec 11, 2018
Title Company	ATTORNEY ONLY

Transaction

Tax	$0.00
Additional	Quitclaim Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Revocable Trust
Address	16889 HALLMARK CT CASTRO VALLEY CA 945521632, CASTRO VALLEY, CA 94552-1632

November 2018: Quit Claim Deed, Transfer

Document Type	Quit Claim Deed
Jurisdiction	ALAMEDA CA
Recording Date	Nov 21, 2018
Property Address	16889 HALLMARK CT, CASTRO VALLEY, CA 94552-1632
Document Number	0000223044
Instrument Date	Nov 7, 2018
Instrument	223044
Transaction Type	Transfer
Record Updated	Dec 11, 2018
Title Company	ATTORNEY ONLY

Transaction

Tax	$0.00
Additional	Quitclaim Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Community Property
Address	16889 HALLMARK CT CASTRO VALLEY CA 945521632, CASTRO VALLEY, CA 94552-1632

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		$933,155 (+1.24%) Land $280,423 Building $659,732
2025	$11,663.00 (+3.86%) Homeowner's exemption	$921,723 (+4.04%) Land $274,925 Building $646,798
2023	$11,229.00 Homeowner's exemption	$885,940 Land $264,252 Building $621,688	$1,446,660

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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