18726 Walnut Rd, Castro Valley, CA 94546 Property Records

Alameda County property record for 18726 Walnut Rd, Castro Valley, CA 94546

Property Summary

Property Type	Single Family Home
Details	5 bd · 3 ba · 2,622 sqft · built 1956
Lot Size	0.225 acres (9,800 sqft)
Owner	2 Individual Names on Record
Last Sale	$790,000 (Jun 2015)
Tax Bill	$12,729 (2025)
Deeds & Mortgages	Nov 2021 Line of Credit Oct 2019 Mortgage + 1 more
Flood Zone	Zone X (minimal risk)
APN	`84D-1168-30-3`

Property Details

APN / Parcel Number

Primary APN	`84D-1168-30-3`
Alternative APN	`084D-1168-030-03`

Interior

Bedrooms	5 Beds
Full Baths	3 Baths
Total Rooms	11 Rooms
Units	2 Units
Stories	1 Story
Building Area	2,622 sqft Living Area

Exterior

Year Built	Built 1956
Effective Year Built	Effective 1965
Architectural Style	L-Shape
Construction Type	Wood
Lot Area	9,800 sqft (0.225 acres)
Parking Spaces	2 Parking Spaces

Location & Zoning

Street Address	18726 WALNUT RD
City	CASTRO VALLEY
State	CA
Zip	94546-2002
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Description	LOT: 00003 BLK: 0030 AR: 084D PAGE: 1168
Legal Subdivision	CASTRO VLY ORCHARDS
Legal Lot Number	23
Jurisdiction	ALAMEDA CA
Township / Civil Division	HAYWARD
Census Block Group	1
Census Block	1005
Census Tract	430300

Owner

Source: Alameda County records, as of September 28, 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	18726 WALNUT RD, CASTRO VALLEY, CA 94546-2002
Occupancy	Owner Occupied
Owner Type	Individual
Vesting	Community Property

Deeds, Mortgages & Sale History

Date	Document
Nov 3, 2021	Deed of Trust, Mortgage · Line of Credit STAR ONE CU
Oct 10, 2019	Deed of Trust, Mortgage · Conventional Mortgage STAR ONE CU
May 25, 2018	Deed of Trust, Mortgage · Conventional Mortgage STAR ONE CU

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Jun 2, 2015 · Amount on Record
Deed Sale	Jun 2, 2015 · Amount on Record
Deed Document Number	2015151163
Record Updated	Oct 29, 2026

November 2021: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	ALAMEDA CA
Property Address	18726 WALNUT RD, CASTRO VALLEY, CA 94546-2002
Transaction Type	Mortgage
Record Updated	Nov 26, 2021

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	18726 WALNUT RD, CASTRO VALLEY, CA 94546-2002

Mortgage

Document Number	0000361727
Date	Nov 3, 2021
Instrument	2021361727

Lender

Name	STAR ONE CU
Type	Credit Union
Address	SUNNYVALE, CA 94088

Agreement

Type	Line of Credit
Amount	Amount Recorded

Interest

Rate Type	Adjustable Rate
Change Frequency	Monthly

October 2019: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	ALAMEDA CA
Property Address	18726 WALNUT RD, CASTRO VALLEY, CA 94546-2002
Document Number	0000216998
Instrument Date	Oct 10, 2019
Transaction Type	Mortgage
Record Updated	Nov 11, 2019
Title Company	OLD REPUBLIC TITLE

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Community Property
Address	18726 WALNUT RD CASTRO VALLEY CA 945462002, CASTRO VALLEY, CA 94546-2002

Mortgage

Document Number	0000216998
Date	Oct 24, 2019
Instrument	216998

Lender

Name	STAR ONE CU
Type	Credit Union
Address	SUNNYVALE, CA 94088

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	180 Months
Due	Oct 23, 2034

May 2018: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	ALAMEDA CA
Property Address	18726 WALNUT RD, CASTRO VALLEY, CA 94546-2002
Document Number	0000110076
Instrument Date	May 25, 2018
Transaction Type	Mortgage
Record Updated	Jun 19, 2018
Title Company	OLD REPUBLIC TITLE

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Community Property
Address	18726 WALNUT RD CASTRO VALLEY CA 945462002, CASTRO VALLEY, CA 94546-2002

Mortgage

Document Number	0000110076
Date	Jun 5, 2018
Instrument	110076

Lender

Name	STAR ONE CU
Type	Credit Union
Address	SUNNVALE, CA 94088

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	300 Months
Due	Jun 4, 2043

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		$961,413 (+1.26%) Land $290,524 Building $677,889
2025	$12,729.00 (+4.25%) Homeowner's exemption	$949,428 (+4.04%) Land $284,828 Building $664,600
2023	$12,210.00 Homeowner's exemption	$912,567 Land $273,770 Building $638,797	$1,245,510

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 · OpenFEMA NFIP redacted claims and policies, as of September 2026

FEMA Flood Zone	Zone X minimal risk
Flood Insurance Requirement	Not required lenders may require it
Community Rating System	Class 7 (15% premium discount)
Nearby Flood Policies	1 in force

Values are read at the parcel center point; flood claims are located to the census block group, not this parcel; lenders make the official flood determination.

Wildfire

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

Wildfire Risk	Low lower than 80% of the US · lower than 88% of California
Wildfire Likelihood	0.01% annual chance
Exposure	None beyond ember reach

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 606 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
Sonic Telecom Fiber	10,000 / 10,000
Xfinity Cable	2,000 / 250
T-Mobile Fixed Wireless	100 / 20
AT&T DSL · Fiber, Fixed Wireless in parts of the area	100 / 20

May also be available: Etheric Networks, GeoLinks, Unwired, Verizon.

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