3857 Mabel Ave, Castro Valley, CA 94546 Property Records

Alameda County property record for 3857 Mabel Ave, Castro Valley, CA 94546

Property Summary

Property Type	Single Family Home
Details	3 bd · 2 ba · 1,544 sqft · built 1947
Lot Size	0.192 acres (8,379 sqft)
Owner	Individual Name on File
Last Sale	$1,100,000 (Oct 2022)
Tax Bill	$13,589 (2025)
Deeds & Mortgages	Oct 2022 Sale & Mortgage Oct 2021 Mortgage + 1 more
Flood Zone	Zone X (minimal risk)
APN	`84B-590-5`

Property Details

APN / Parcel Number

Primary APN	`84B-590-5`
Alternative APN	`084B-0590-005-00`

Interior

Bedrooms	3 Beds
Full Baths	2 Baths
Total Rooms	7 Rooms
Stories	1 Story
Building Area	1,544 sqft Living Area

Exterior

Year Built	Built 1947
Effective Year Built	Effective 1990
Architectural Style	L-Shape
Construction Type	Wood
Lot Area	8,379 sqft (0.192 acres)

Location & Zoning

Street Address	3857 MABEL AVE
City	CASTRO VALLEY
State	CA
Zip	94546-3401
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Description	LOT: 00005 BLK: AR: 084B PAGE: 0590
Jurisdiction	ALAMEDA CA
Township / Civil Division	HAYWARD
Census Block Group	2
Census Block	2010
Census Tract	430700

Owner

3857 Mabel Ave is owned and occupied by an individual who bought it in October 2022.

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

Owner of Record	Individual Name on File
Mailing Address	3857 MABEL AVE, CASTRO VALLEY, CA 94546-3401
Occupancy	Owner Occupied
Owner Type	Individual

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
Oct 4, 2022	Grant Deed, Transfer · Conventional Mortgage BANK OF AMERICA NA
Oct 19, 2021	Intrafamily Transfer, Transfer · Conventional Mortgage LOANDRONE INC
Oct 19, 2021	Intrafamily Transfer, Transfer

Assessor's Deed Record

Deed Names	Name on Deed
Last Sale	Oct 4, 2022 · Amount on File
Deed Sale	Oct 4, 2022 · Amount on File
Prior Sale	Apr 22, 2016 · Amount on File
Deed Document Number	2022166610
Prior Transfer Date	Oct 1, 2016
Prior Transfer Doc	0000258949
Record Updated	Oct 29, 2026

October 2022: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	ALAMEDA CA
Recording Date	Oct 4, 2022
Property Address	3857 MABEL AVE, CASTRO VALLEY, CA 94546-3401
Document Number	0000166610
Instrument Date	Sep 16, 2022
Instrument	2022166610
Transaction Type	Transfer
Record Updated	Nov 2, 2022
Title Company	NOT AVAILABLE, DOMA TITLE OF CALIFORNIA INC

Transaction

Amount	Amount on Record
Downpayment	Downpayment on Record
Loan-to-Value (LTV)	LTV on Record
Tax	$1,210.00
Amount Accuracy	Rounded by County
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	3857 MABEL AVE, CASTRO VALLEY, CA 94546-3401

Mortgage

Document Number	0000166611
Date	Oct 4, 2022
Instrument	2022166611

Lender

Name	BANK OF AMERICA NA
Type	Bank

Agreement

Type	Conventional Mortgage
Amount	Amount on Record
Term	361 Months
Due	Nov 1, 2052

October 2021: Intrafamily Transfer, Transfer

Document Type	Intrafamily Transfer
Jurisdiction	ALAMEDA CA
Recording Date	Oct 19, 2021
Property Address	3857 MABEL AVE, CASTRO VALLEY, CA 94546-3401
Document Number	0000346532
Instrument Date	Aug 31, 2021
Instrument	2021346532
Transaction Type	Transfer
Record Updated	Nov 9, 2021
Title Company	VANTAGE PT TITLE INC, VANTAGE POINT TITLE INC

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
Address	3857 MABEL AVE, HAYWARD, CA 94546-3401

Mortgage

Document Number	0000346533
Date	Oct 19, 2021
Instrument	2021346533

Lender

Name	LOANDRONE INC
Type	Non-Lending Institution

Agreement

Type	Conventional Mortgage
Amount	Amount on Record
Term	360 Months
Due	Oct 1, 2051

October 2021: Intrafamily Transfer, Transfer

Document Type	Intrafamily Transfer
Jurisdiction	ALAMEDA CA
Recording Date	Oct 19, 2021
Property Address	3857 MABEL AVE, CASTRO VALLEY, CA 94546-3401
Document Number	0000346534
Instrument Date	Aug 31, 2021
Instrument	2021346534
Transaction Type	Transfer
Record Updated	Jun 7, 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	3857 MABEL AVE, CASTRO VALLEY, CA 94546-3401

Tax Assessment & Valuation

The 2025 property tax bill for 3857 Mabel Ave was $13,589 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		$1,078,000 (-0.65%) Land $325,500 Building $759,500
2025	$13,589.00 Homeowner's exemption	$1,085,000 Land $325,500 Building $759,500
2023	$12,725.00 Homeowner's exemption	$1,012,000 Land $303,600 Building $708,400	$972,090

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

Flood

FEMA maps place 3857 Mabel Ave in Zone X, an area of minimal flood risk, though there have been 1 flood claim nearby since 1998.

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	5 in force
Nearby Flood Claims	1 (1998)
Most Recent Claim	Feb 1998 · Severe Winter Storms And Flooding

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 3857 Mabel Ave is low, with less than 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 96% of the US · lower than 97.4% of California
Wildfire Likelihood	Under 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 704 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
Starlink Satellite	280 / 30
Etheric Networks Fixed Wireless	250 / 100
T-Mobile Fixed Wireless	100 / 20

May also be available: GeoLinks.

Nearby Properties on Mabel Ave

Nearby Streets

Search Property Records by Address or Parcel Number

Search by:

By searching, you agree to: Terms • Privacy • Disclosures