3249 Hertlein Pl, Castro Valley, CA 94546 Property Records

Alameda County property record for 3249 Hertlein Pl, Castro Valley, CA 94546

Property Summary

Property Type	Single Family Home
Details	4 bd · 3 ba · 2,354 sqft · built 1990
Lot Size	0.2 acres (8,721 sqft)
Owner	Individual Name on Record
Last Sale	$820,000 (Sep 2017)
Tax Bill	$11,878 (2025)
Deeds & Mortgages	Oct 2023 Mortgage Sep 2017 Sale & Mortgage
Flood Zone	Zone X (minimal risk)
APN	`84B-510-33`

Property Details

APN / Parcel Number

Primary APN	`84B-510-33`
Alternative APN	`084B-0510-033-00`

Interior

Bedrooms	4 Beds
Full Baths	2.5 Baths
Half Baths	1 Half Bath
Total Rooms	8 Rooms
Stories	2 Stories
Building Area	2,354 sqft Living Area

Exterior

Year Built	Built 1990
Effective Year Built	Effective 1991
Architectural Style	L-Shape
Construction Type	Wood
Lot Area	8,721 sqft (0.2 acres)
Parking Spaces	2 Parking Spaces

Location & Zoning

Street Address	3249 HERTLEIN PL
City	CASTRO VALLEY
State	CA
Zip	94546-2900
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Description	LOT: 00009 BLK: TR: 5100
Legal Subdivision	TRACT 5100
Legal Tract	5100
Legal Lot Number	9
Jurisdiction	ALAMEDA CA
Township / Civil Division	HAYWARD
Census Block Group	4
Census Block	4000
Census Tract	430600

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	Individual Name on Record
Mailing Address	1093 SYCAMORE DR, MILLBRAE, CA 94030-1042
Owner Type	Individual

Deeds, Mortgages & Sale History

Date	Document
Oct 27, 2023	Deed of Trust, Mortgage · Conventional Mortgage EAST WEST BANK
Sep 15, 2017	Grant Deed, Transfer · ARM STERLING BANK & TRUST FSB

Assessor's Deed Record

Deed Names	Name on Deed
Last Sale	Sep 15, 2017 · Amount on Record
Deed Sale	Sep 15, 2017 · Amount on Record
Prior Sale	Jun 23, 2006 · Amount on Record
Deed Document Number	2017202803
Prior Transfer Date	Jul 9, 1996
Prior Transfer Doc	0000169173
Record Updated	Oct 29, 2026

October 2023: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	ALAMEDA CA
Property Address	3249 HERTLEIN PL, CASTRO VALLEY, CA 94546-2900
Transaction Type	Mortgage
Record Updated	Dec 19, 2023
Title Company	FIDELITY NATIONAL TITLE

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	1016 SPRINGFIELD DR, MILLBRAE, CA 94030-1548

Mortgage

Document Number	0000126787
Date	Oct 27, 2023
Instrument	2023126787

Lender

Name	EAST WEST BANK
Type	Bank
Address	EL MONTE, CA 91731

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	361 Months
Due	Nov 1, 2053

Interest

Rate Type	Adjustable Rate
Rate	7%
Type Change Date	Nov 1, 2033
Change Frequency	Annually
Min Rate At Change	5%
Max Rate At Change	9%
Index	1-Year T-Bill
Max Rate	13%

September 2017: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	ALAMEDA CA
Recording Date	Sep 15, 2017
Property Address	3249 HERTLEIN PL, CASTRO VALLEY, CA 94546-2900
Document Number	0000202803
Map Reference	MAP181 PG35-39
Instrument Date	Sep 5, 2017
Instrument	2017202803
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
Address	1093 SYCAMORE DR, MILLBRAE, CA 94030-1042

Mortgage

Document Number	0000202804
Date	Sep 15, 2017
Instrument	2017202804

Lender

Name	STERLING BANK & TRUST FSB
Type	Bank

Agreement

Type	ARM
Amount	Amount Recorded
Term	361 Months
Due	Oct 1, 2047

Interest

Rate Type	Adjustable Rate
Rate	5.25%
Type Change Date	Oct 1, 2020
Change Frequency	Annually
Min Rate At Change	3.95%
Max Rate At Change	8.25%
Index	1-Year LIBOR
Max Rate	11.2%

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		$951,658 (+2%) Land $285,497 Building $666,161
2025	$11,878.00 (+3.83%)	$933,003 (+4.04%) Land $279,901 Building $653,102
2023	$11,440.00	$896,775 Land $269,032 Building $627,743	$985,320

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

Provider	Max Down / Up (Mbps)
Sonic Telecom Fiber	10,000 / 10,000
AT&T Fiber · DSL · Fixed Wireless in parts of the area	5,000 / 5,000
Xfinity Cable	2,000 / 250
Etheric Networks Fixed Wireless	250 / 100
T-Mobile Fixed Wireless	100 / 20

May also be available: GeoLinks, Unwired, Verizon.

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