17641 Chateau Ct, Castro Valley, CA 94552 Property Records

Alameda County property record for 17641 Chateau Ct, Castro Valley, CA 94552

Property Summary

Property Type	Single Family Home
Details	4 bd · 2.5 ba · 2,875 sqft · built 1981
Lot Size	0.316 acres (13,760 sqft)
Owner	2 Individual Names on Record
Last Sale	$1,325,000 (Jun 2019)
Tax Bill	$18,310 (2025)
Deeds & Mortgages	Dec 2021 Mortgage Jun 2019 Sale & Mortgage
Flood Zone	Zone X (minimal risk)
APN	`85-6310-18`

Property Details

APN / Parcel Number

Primary APN	`85-6310-18`
Alternative APN	`085-6310-018-00`

Interior

Bedrooms	4 Beds
Full Baths	2.5 Baths
Half Baths	1 Half Bath
Total Rooms	9 Rooms
Stories	2 Stories
Building Area	2,875 sqft Living Area

Exterior

Year Built	Built 1981
Effective Year Built	Effective 1982
Architectural Style	L-Shape
Construction Type	Wood
Lot Area	13,760 sqft (0.316 acres)
Parking Spaces	2 Parking Spaces

Location & Zoning

Street Address	17641 CHATEAU CT
City	CASTRO VALLEY
State	CA
Zip	94552-1750
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Description	LOT: 00120 BLK: TR: 3983
Legal Tract	3983
Legal Lot Number	120
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	2 Individual Names on Record
Mailing Address	17641 CHATEAU CT, CASTRO VALLEY, CA 94552-1750
Occupancy	Owner Occupied
Owner Type	Individual
Vesting	Joint Tenants

Deeds, Mortgages & Sale History

Date	Document
Dec 15, 2021	Deed of Trust, Mortgage · Conventional Mortgage GUARANTEED RATE AFFINITY LLC
Jun 13, 2019	Grant Deed, Transfer · Conventional Mortgage PLAZA HOME MORTGAGE INC

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Jun 13, 2019 · Amount on Record
Deed Sale	Jun 13, 2019 · Amount on Record
Deed Document Number	2019112294
Prior Transfer Date	Aug 14, 2009
Prior Transfer Doc	0000286963
Record Updated	Oct 29, 2026

December 2021: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	ALAMEDA CA
Property Address	17641 CHATEAU CT, CASTRO VALLEY, CA 94552-1750
Transaction Type	Mortgage
Record Updated	Jan 11, 2022
Title Company	OLD REPUBLIC TITLE

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	17641 CHATEAU CT, CASTRO VALLEY, CA 94552-1750

Mortgage

Document Number	0000397420
Date	Dec 15, 2021
Instrument	2021397420

Lender

Name	GUARANTEED RATE AFFINITY LLC
Type	Mortgage Company
Address	CHICAGO, IL 60613

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	361 Months
Due	Jan 1, 2052

June 2019: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	ALAMEDA CA
Recording Date	Jun 13, 2019
Property Address	17641 CHATEAU CT, CASTRO VALLEY, CA 94552-1750
Document Number	0000112294
Map Reference	MB 115 PG 1
Instrument Date	Jun 5, 2019
Instrument	2019112294
Transaction Type	Transfer
Record Updated	Aug 19, 2021
Title Company	OLD REPUBLIC TITLE COMPANY

Transaction

Amount	Amount Recorded
Downpayment	Downpayment on Record
Loan-to-Value (LTV)	LTV on Record
Tax	$0.00
Amount Accuracy	Rounded by County
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Joint Tenants
Address	17641 CHATEAU CT, CASTRO VALLEY, CA 94552-1750

Mortgage

Document Number	0000112295
Date	Jun 13, 2019
Instrument	2019112295

Lender

Name	PLAZA HOME MORTGAGE INC
Type	Mortgage Company

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	361 Months
Due	Jul 1, 2049

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		$1,507,597 (+2%) Land $452,279 Building $1,055,318
2025	$18,310.00 (+3.68%)	$1,478,037 (+4.04%) Land $443,411 Building $1,034,626
2023	$17,660.00	$1,420,651 Land $426,195 Building $994,456	$1,627,290

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	Moderate above 62% of the US · lower than 62% of California
Wildfire Likelihood	0.2% annual chance
Exposure	Direct burnable vegetation

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 402 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
AT&T DSL · Fiber in parts of the area	100 / 20

May also be available: Etheric Networks, Sonic Telecom, T-Mobile, Unwired.

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