18308 Maffey Dr, Castro Valley, CA 94546 Property Records

Alameda County property record for 18308 Maffey Dr, Castro Valley, CA 94546

Property Summary

Property Type	Single Family Home
Details	4 bd · 2.5 ba · 2,205 sqft · built 1956
Lot Size	0.128 acres (5,580 sqft)
Owner	2 Trust Names on File
Last Sale	$1,500,000 (Sep 2026)
Tax Bill	$16,223 (2025)
Deeds & Mortgages	Sep 2026 Sale & Mortgage Dec 2025 Mortgage + 2 more
Flood Zone	Zone X (minimal risk)
APN	`84D-1207-6`

Property Details

APN / Parcel Number

Primary APN	`84D-1207-6`
Alternative APN	`084D-1207-006-00`

Interior

Bedrooms	4 Beds
Full Baths	2.5 Baths
Half Baths	1 Half Bath
Total Rooms	7 Rooms
Stories	2 Stories
Building Area	2,205 sqft Living Area

Exterior

Year Built	Built 1956
Effective Year Built	Effective 1957
Architectural Style	L-Shape
Construction Type	Wood
Lot Area	5,580 sqft (0.128 acres)
Parking Spaces	2 Parking Spaces

Location & Zoning

Street Address	18308 MAFFEY DR
City	CASTRO VALLEY
State	CA
Zip	94546-2267
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Description	LOT: 00006 BLK: 000D TR: 1639
Legal Subdivision	TRACT 1639
Legal Tract	1639
Legal Block	D
Legal Lot Number	6
Jurisdiction	ALAMEDA CA
Township / Civil Division	HAYWARD
Census Block Group	3
Census Block	3000
Census Tract	430300

Owner

18308 Maffey Dr is owner-occupied and held in a trust since September 2026.

Source: Alameda County records, as of October 21, 2026

Owner of Record	2 Trust Names on File
Mailing Address	18308 MAFFEY DR, CASTRO VALLEY, CA 94546-2267
Occupancy	Owner Occupied
Owner Type	Company
Vesting	Trust, Family Trust

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
Sep 14, 2026	Grant Deed, Transfer · Conventional Mortgage BANK OF AMERICA
Dec 29, 2025	Deed of Trust, Mortgage · Conventional Mortgage BANK OF AMERICA NA
Sep 9, 2025	Intrafamily Transfer, Transfer
Jul 14, 2023	Grant Deed, Transfer · Conventional Mortgage BANK OF THE WEST

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Sep 14, 2026 · Amount on File
Deed Sale	Sep 14, 2026 · Amount on File
Prior Sale	Jul 14, 2023 · Amount on File
Deed Document Number	2026116876
Prior Transfer Date	Oct 29, 2007
Prior Transfer Doc	0000396465
Record Updated	Oct 29, 2026

September 2026: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	ALAMEDA CA
Recording Date	Sep 14, 2026
Property Address	18308 MAFFEY DR, CASTRO VALLEY, CA 94546-2267
Document Number	0000116876
Instrument Date	Sep 4, 2026
Instrument	2026116876
Transaction Type	Transfer
Record Updated	Oct 20, 2026
Title Company	REPUBLIC TITLE COMPANY, OLD REPUBLIC TITLE COMPANY

Transaction

Amount	Amount on Record
Downpayment	Downpayment on Record
Loan-to-Value (LTV)	LTV on Record
Tax	$166,650.00
Amount Accuracy	Full Amount Stated
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Family Trust
Address	18308 MAFFEY DR, CASTRO VALLEY, CA 94546-2267

Mortgage

Document Number	0000116877,
Date	Sep 14, 2026
Instrument	2026116877

Lender

Name	BANK OF AMERICA

Agreement

Type	Conventional Mortgage
Amount	Amount on Record
Term	360 Months
Due	Oct 1, 2056

Interest

Rate Type	Adjustable Rate
Rate	5.88%
Initial Type	Adjustable Rate
Adjustable	Adjustable Rate Rider
Max Rate	-1%

December 2025: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	ALAMEDA CA
Property Address	18308 MAFFEY DR, CASTRO VALLEY, CA 94546-2267
Transaction Type	Mortgage
Record Updated	Feb 5, 2026
Title Company	FIRST AMERICAN TITLE, FIRST AMERICAN MORTGAGE SLN

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	18308 MAFFEY DR, CASTRO VALLEY, CA 94546-2267

Mortgage

Document Number	0000165854
Date	Dec 29, 2025
Instrument	2025165854

Lender

Name	BANK OF AMERICA NA
Type	Bank
Address	101 SOUTH TRYON STREET, CHARLOTTE, NC 28280

Agreement

Type	Conventional Mortgage
Amount	Amount on Record
Term	361 Months
Due	Jan 1, 2056

Interest

Rate Type	Adjustable Rate
Rate	4.37%
Adjustable	Adjustable Rate Rider
Type Change Date	Jan 1, 2033
Change Frequency	6 Months
Min Rate At Change	2.75%
Max Rate At Change	9.37%
Index	Other
Max Rate	9.37%

September 2025: Intrafamily Transfer, Transfer

Document Type	Intrafamily Transfer
Jurisdiction	ALAMEDA CA
Recording Date	Sep 9, 2025
Property Address	18308 MAFFEY DR, CASTRO VALLEY, CA 94546-2267
Document Number	0000112999
Map Reference	MB 37 PG 14
Instrument Date	Sep 3, 2025
Instrument	2025112999
Transaction Type	Transfer
Record Updated	Oct 2, 2025

Transaction

Tax	$0.00
Amount Accuracy	No Consideration Stated
Additional	Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	18308 MAFFEY DR, CASTRO VALLEY, CA 94546-2267

July 2023: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	ALAMEDA CA
Recording Date	Jul 14, 2023
Property Address	18308 MAFFEY DR, CASTRO VALLEY, CA 94546-2267
Document Number	0000080027
Map Reference	MB 37 PG 14
Instrument Date	Jun 26, 2023
Instrument	2023080027
Transaction Type	Transfer
Record Updated	Aug 14, 2023
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	$1,357.40
Amount Accuracy	Rounded by County
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Community Property with Right of Survivorship
Address	18308 MAFFEY DR, CASTRO VALLEY, CA 94546-2267

Mortgage

Document Number	0000080028
Date	Jul 14, 2023
Instrument	2023080028

Lender

Name	BANK OF THE WEST
Type	Bank

Agreement

Type	Conventional Mortgage
Amount	Amount on Record
Term	361 Months
Due	Aug 1, 2053

Interest

Rate Type	Adjustable Rate
Rate	6%
Type Change Date	Aug 1, 2030
Change Frequency	6 Months
Min Rate At Change	3%
Max Rate At Change	11%
Margin	3
Max Rate	11%

Tax Assessment & Valuation

The 2025 property tax bill for 18308 Maffey Dr was $16,223.

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		$1,276,853 (+1.44%) Land $385,156 Building $898,697
2025	$16,223.00 Homeowner's exemption	$1,258,680 Land $377,604 Building $881,076
2023	$2,715.00 (+2.65%) Homeowner's exemption	$168,769 (+2%) Land $93,489 Building $75,280	$1,083,240
2022	$2,645.00 Homeowner's exemption	$165,460 Land $91,656 Building $73,804

Assessed value and assessed market value are set for property tax purposes, not market price estimates; both are a fraction of this property's market value.

Flood

FEMA maps place 18308 Maffey Dr 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 18308 Maffey Dr 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 724 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 · Fixed Wireless, DSL in parts of the area	5,000 / 5,000
Xfinity Cable	2,000 / 250
Verizon Fixed Wireless	300 / 20

May also be available: Etheric Networks, GeoLinks, T-Mobile.

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