4808 Heyer Ave, Castro Valley, CA 94552 Property Records

Alameda County property record for 4808 Heyer Ave, Castro Valley, CA 94552

Property Summary

Property Type	Single Family Home
Details	3 bd · 1 ba · 1,042 sqft · built 1951
Lot Size	0.115 acres (5,000 sqft)
Owner	Company Name on File
Last Sale	$665,000 (Jul 2019)
Tax Bill	$9,451 (2025)
Deeds & Mortgages	Nov 2021 Transfer Jul 2019 Sale & Mortgage
Flood Zone	Zone X (minimal risk)
APN	`84C-1015-2`

Property Details

APN / Parcel Number

Primary APN	`84C-1015-2`
Alternative APN	`084C-1015-002-00`

Interior

Bedrooms	3 Beds
Full Baths	1 Bath
Total Rooms	5 Rooms
Stories	1 Story
Building Area	1,042 sqft Living Area

Exterior

Year Built	Built 1951
Effective Year Built	Effective 1975
Architectural Style	L-Shape
Construction Type	Wood
Lot Area	5,000 sqft (0.115 acres)

Location & Zoning

Street Address	4808 HEYER AVE
City	CASTRO VALLEY
State	CA
Zip	94552-3602
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Description	LOT: 00002 BLK: 0001 TR: 0982
Legal Subdivision	TRACT 982
Legal Tract	0982
Legal Block	1
Legal Lot Number	2
Jurisdiction	ALAMEDA CA
Township / Civil Division	HAYWARD
Census Block Group	2
Census Block	2011
Census Tract	430200

Owner

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

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

Owner of Record	Company Name on File
Mailing Address	4808 HEYER AVE, CASTRO VALLEY, CA 94552-3602
Owner Type	Company
Vesting	Trust

Deeds, Mortgages & Sale History

Date	Document
Nov 10, 2021	Intrafamily Transfer, Transfer
Jul 23, 2019	Grant Deed, Transfer · Conventional Mortgage GENERAL MORTGAGE CAPITAL CORP

Assessor's Deed Record

Deed Names	Name on Deed
Last Sale	Jul 23, 2019 · Amount on File
Deed Sale	Jul 23, 2019 · Amount on File
Deed Document Number	2019140224
Prior Transfer Date	Feb 11, 2010
Prior Transfer Doc	0000060737
Record Updated	Oct 29, 2026

November 2021: Intrafamily Transfer, Transfer

Document Type	Intrafamily Transfer
Jurisdiction	ALAMEDA CA
Recording Date	Nov 10, 2021
Property Address	4808 HEYER AVE, CASTRO VALLEY, CA 94552-3602
Document Number	0000368783
Map Reference	MB 31 PG 38
Instrument Date	Nov 5, 2021
Instrument	2021368783
Transaction Type	Transfer
Record Updated	Sep 28, 2023

Transaction

Tax	$0.00
Amount Accuracy	Transfer Tax Exempt
Additional	Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Family Trust
Address	2765 GARDEN ST, OAKLAND, CA 94601-1313

July 2019: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	ALAMEDA CA
Recording Date	Jul 23, 2019
Property Address	4808 HEYER AVE, CASTRO VALLEY, CA 94552-3602
Document Number	0000140224
Map Reference	MB 31 PG 38
Instrument Date	Jul 12, 2019
Instrument	2019140224
Transaction Type	Transfer
Record Updated	Aug 19, 2021
Title Company	CHICAGO TITLE COMPANY

Transaction

Amount	Amount on Record
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	4808 HEYER AVE, CASTRO VALLEY, CA 94552-3602

Mortgage

Document Number	0000140225
Date	Jul 23, 2019
Instrument	2019140225

Lender

Name	GENERAL MORTGAGE CAPITAL CORP
Type	Mortgage Company

Agreement

Type	Conventional Mortgage
Amount	Amount on Record
Term	361 Months
Due	Aug 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		$741,807 (+2%) Land $222,542 Building $519,265
2025	$9,451.00 (+3.94%)	$727,263 (+4.04%) Land $218,179 Building $509,084
2023	$9,093.00	$699,027 Land $209,708 Building $489,319	$751,590

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
Nearby Flood Claims	1 (1998)
Claims Outside the SFHA	1 of 1
Most Recent Claim	Feb 1998 · rainfall accumulation

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 804 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
Verizon Fixed Wireless	300 / 20
T-Mobile Fixed Wireless	100 / 20

May also be available: Etheric Networks, GeoLinks.

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