3864 Modesto St, Castro Valley, CA 94546 Property Records

Alameda County property record for 3864 Modesto St, Castro Valley, CA 94546

Property Summary

Property Type	Single Family Home
Details	3 bd · 2 ba · 1,179 sqft · built 1950
Lot Size	0.122 acres (5,300 sqft)
Owner	2 Individual Names on File
Last Sale	$1,350,000 (Jun 2022)
Tax Bill	$16,917 (2025)
Deeds & Mortgages	Jun 2022 Sale & Mortgage Mar 2022 Sale + 1 more
Flood Zone	Zone X (minimal risk)
APN	`84C-766-17`

Property Details

APN / Parcel Number

Primary APN	`84C-766-17`
Alternative APN	`084C-0766-017-00`

Interior

Bedrooms	3 Beds
Full Baths	2 Baths
Total Rooms	7 Rooms
Stories	1 Story
Building Area	1,179 sqft Living Area
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 1950
Effective Year Built	Effective 1950
Architectural Style	L-Shape
Exterior Material	Stucco
Construction Type	Wood
Roof Material	Composition Shingle
Lot Area	5,300 sqft (0.122 acres)

Utilities, Heating & Cooling

Heating System	Floor/Wall Furnace
Heating Fuel	Gas
Sewer	Municipal
Water Source	Commercial

Location & Zoning

Street Address	3864 MODESTO ST
City	CASTRO VALLEY
State	CA
Zip	94546-4439
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	R1
Legal Description	LOT: 00008 BLK: 0001 TR: 0951
Legal Subdivision	TRACT 951 FILED OCTOBER 21 1949 IN
Legal Tract	0951
Legal Block	1
Legal Lot Number	8
Jurisdiction	ALAMEDA CA
Township / Civil Division	HAYWARD
Census Block Group	4
Census Block	4004
Census Tract	430800

Owner

3864 Modesto St is owned and occupied by two individuals who bought it in June 2022.

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	2 Individual Names on File
Mailing Address	3864 MODESTO ST, CASTRO VALLEY, CA 94546-4439
Occupancy	Owner Occupied
Owner Type	Individual
Vesting	Joint Tenants

Deeds, Mortgages & Sale History

Date	Document
Jun 24, 2022	Grant Deed, Transfer · Conventional Mortgage MUFG UNION BANK NA
Mar 22, 2022	Grant Deed, Transfer CHICAGO TITLE COMPANY
Jan 3, 2022	Intrafamily Transfer, Transfer

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Jun 24, 2022 · Amount on File
Deed Sale	Jun 24, 2022 · Amount on File
Prior Sale	Mar 22, 2022 · Amount on File
Deed Document Number	2022117143
Prior Transfer Date	Nov 19, 2021
Prior Transfer Doc	0000000688
Record Updated	Oct 29, 2026

June 2022: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	ALAMEDA CA
Recording Date	Jun 24, 2022
Property Address	3864 MODESTO ST, CASTRO VALLEY, CA 94546-4439
Document Number	0000117143
Map Reference	MB 21 PG 12
Instrument Date	Jun 17, 2022
Instrument	2022117143
Transaction Type	Transfer
Record Updated	Jul 22, 2022
Title Company	CHICAGO TITLE COMPANY

Transaction

Amount	Amount on Record
Downpayment	Downpayment on Record
Loan-to-Value (LTV)	LTV on Record
Tax	$1,485.00
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	3864 MODESTO ST, CASTRO VALLEY, CA 94546-4439

Mortgage

Document Number	0000117144
Date	Jun 24, 2022
Instrument	2022117144

Lender

Name	MUFG UNION BANK NA
Type	Bank

Agreement

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

Interest

Rate Type	Adjustable Rate
Rate	4.62%
Type Change Date	Jul 1, 2032
Change Frequency	6 Months
Min Rate At Change	2.75%
Max Rate At Change	6.62%
Index	Other
Max Rate	10.6%

Mortgage

Document Number	0000117145
Date	Jun 24, 2022
Instrument	2022117145

Lender

Name	MUFG UNION BANK NA
Type	Bank
Address	SAN DIEGO, CA 92121

Agreement

Type	Line of Credit
Amount	Amount on Record
Term	361 Months
Due	Jun 30, 2052

Interest

Rate Type	Adjustable Rate
Change Frequency	Monthly

March 2022: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	ALAMEDA CA
Recording Date	Mar 22, 2022
Property Address	3864 MODESTO ST, CASTRO VALLEY, CA 94546-4439
Document Number	0000059515
Map Reference	MB 21 PG 12
Instrument Date	Mar 17, 2022
Instrument	2022059515
Transaction Type	Transfer
Record Updated	Apr 8, 2022
Title Company	CHICAGO TITLE COMPANY

Transaction

Amount	Amount on Record
Tax	$1,100.00
Amount Accuracy	Rounded by County
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	5345 WILLOW GLEN PL, CASTRO VALLEY, CA 94546-1548

January 2022: Intrafamily Transfer, Transfer

Document Type	Intrafamily Transfer
Jurisdiction	ALAMEDA CA
Recording Date	Jan 3, 2022
Property Address	3864 MODESTO ST, CASTRO VALLEY, CA 94546-4439
Document Number	0000000688
Instrument Date	Nov 19, 2021
Instrument	2022000688
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	Revocable Trust
Address	37 LAM CT, KENSINGTON, CA 94707-1050

Tax Assessment & Valuation

The 2025 property tax bill for 3864 Modesto St was $16,917.

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		$1,360,000 (-) Land $408,000 Building $952,000
2025	$16,917.00	$1,360,000 Land $408,000 Building $952,000
2023	$15,539.00	$1,242,000 Land $372,600 Building $869,400	$1,189,530

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

Flood

FEMA maps place 3864 Modesto St in Zone X, an area of minimal flood risk, within 500 ft of a high-risk flood zone.

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
Nearest Special Flood Hazard Area	Zone AE, within 500 ft
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

The area around 3864 Modesto St has no burnable land within ember reach, so its wildfire risk is not rated.

Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024

Wildfire Risk	Not rated no burnable land within 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.

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