3250 Hertlein Pl, Castro Valley, CA 94546 Property Records

Alameda County property record for 3250 Hertlein Pl, Castro Valley, CA 94546

Property Summary

Property Type	Single Family Home
Details	4 bd · 3 ba · 2,389 sqft · built 2000
Lot Size	0.172 acres (7,490 sqft)
Owner	2 Individual Names on File
Last Sale	$650,000 (Aug 2012)
Tax Bill	$10,231 (2025)
Deeds & Mortgages	Dec 2019 Mortgage Jun 2019 Mortgage
Flood Zone	Zone X (minimal risk)
APN	`84B-510-28`

Property Details

APN / Parcel Number

Primary APN	`84B-510-28`
Alternative APN	`084B-0510-028-00`

Interior

Bedrooms	4 Beds
Full Baths	3 Baths
Total Rooms	8 Rooms
Stories	2 Stories
Building Area	2,389 sqft Living Area

Exterior

Year Built	Built 2000
Effective Year Built	Effective 2000
Architectural Style	L-Shape
Construction Type	Wood
Lot Area	7,490 sqft (0.172 acres)
Parking Spaces	2 Parking Spaces

Location & Zoning

Street Address	3250 HERTLEIN PL
City	CASTRO VALLEY
State	CA
Zip	94546-2900
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Description	LOT: 00004 BLK: TR: 5100
Legal Tract	5100
Legal Lot Number	4
Jurisdiction	ALAMEDA CA
Township / Civil Division	HAYWARD
Census Block Group	4
Census Block	4000
Census Tract	430600

Owner

3250 Hertlein Pl is owned and occupied by two individuals who acquired it in June 2019.

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

Owner of Record	2 Individual Names on File
Mailing Address	3250 HERTLEIN PL, CASTRO VALLEY, CA 94546-2900
Occupancy	Owner Occupied
Owner Type	Individual
Vesting	Joint Tenants

Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.

Deeds, Mortgages & Sale History

Date	Document
Dec 12, 2019	Deed of Trust, Mortgage · Conventional Mortgage QUICKEN LNS
Jun 17, 2019	Quit Claim Deed, Transfer · Conventional Mortgage QUICKEN LNS

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Aug 22, 2012 · Amount on File
Deed Sale	Aug 22, 2012 · Amount on File
Prior Sale	Apr 16, 2010
Deed Document Number	2012275024
Last Transfer Date	Jun 5, 2019
Transfer Doc	0000114201
Record Updated	Oct 29, 2026

December 2019: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	ALAMEDA CA
Property Address	3250 HERTLEIN PL, CASTRO VALLEY, CA 94546-2900
Document Number	0000258207
Instrument Date	Dec 12, 2019
Transaction Type	Mortgage
Record Updated	Jan 21, 2020
Title Company	OLD REPUBLIC TITLE

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Joint Tenants with Right of Survivorship
Address	3250 HERTLEIN PL CASTRO VALLEY CA 945462900, CASTRO VALLEY, CA 94546-2900

Mortgage

Document Number	0000258207
Date	Dec 17, 2019
Instrument	258207

Lender

Name	QUICKEN LNS
Type	Funding / Finance Company
Address	DETROIT, MI 48226-1906

Agreement

Type	Conventional Mortgage
Amount	Amount on Record
Term	360 Months
Due	Dec 16, 2049

June 2019: Quit Claim Deed, Transfer

Document Type	Quit Claim Deed
Jurisdiction	ALAMEDA CA
Recording Date	Jun 17, 2019
Property Address	3250 HERTLEIN PL, CASTRO VALLEY, CA 94546-2900
Document Number	0000114201
Instrument Date	Jun 5, 2019
Instrument	114201
Transaction Type	Transfer
Record Updated	Jul 26, 2019
Title Company	OLD REPUBLIC TITLE

Transaction

Tax	$0.00
Amount Accuracy	Full Value
Additional	Quitclaim Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Joint Tenants with Right of Survivorship
Address	3250 HERTLEIN PL CASTRO VALLEY CA 945462900, CASTRO VALLEY, CA 94546-2900

Mortgage

Document Number	114202
Date	Jun 17, 2019
Instrument	114202

Lender

Name	QUICKEN LNS
Type	Funding / Finance Company
Address	DETROIT, MI 48226-1906

Agreement

Type	Conventional Mortgage
Amount	Amount on Record
Term	360 Months
Due	Jun 16, 2049

Tax Assessment & Valuation

The 2025 property tax bill for 3250 Hertlein Pl was $10,231 with a homeowner's exemption.

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		$809,400 (+1.12%) Land $244,920 Building $571,480
2025	$10,231.00 Homeowner's exemption	$800,396 Land $240,119 Building $560,277
2023	$9,844.00 Homeowner's exemption	$769,320 Land $230,796 Building $538,524	$1,298,160

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

Flood

FEMA maps place 3250 Hertlein Pl in Zone X, an area of minimal flood risk.

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

Wildfire risk around 3250 Hertlein Pl is low, with a 0.01% annual chance of 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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