Alameda County property record for 3871 Modesto St, Castro Valley, CA 94546
| Property Type | Single Family Home |
|---|---|
| Details | 2 bd · 1 ba · 1,059 sqft · built 1950 |
| Lot Size | 0.117 acres (5,100 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $78,500 (Jun 1998) |
| Tax Bill | $4,125 (2025) |
| Deeds & Mortgages | Mar 2022 Reverse Mortgage Jul 2017 Mortgage |
| Flood Zone | Zone X (minimal risk) |
| APN | 84C-768-9 |
| Primary APN | 84C-768-9 |
|---|---|
| Alternative APN |
|
| Bedrooms | 2 Beds |
|---|---|
| Full Baths | 1 Bath |
| Total Rooms | 5 Rooms |
| Stories | 1 Story |
| Building Area | 1,059 sqft Living Area |
| Year Built | Built 1950 |
|---|---|
| Effective Year Built | Effective 1950 |
| Architectural Style | L-Shape |
| Construction Type | Wood |
| Lot Area | 5,100 sqft (0.117 acres) |
| Street Address | 3871 MODESTO ST |
|---|---|
| City | CASTRO VALLEY |
| State | CA |
| Zip | 94546-4438 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | LOT: 00009 BLK: 0002 TR: 0951 |
| Legal Subdivision | TRACT 951 |
| Legal Tract | 0951 |
| Legal Block | 2 |
| Legal Lot Number | 9 |
| Jurisdiction | ALAMEDA CA |
| Township / Civil Division | HAYWARD |
| Census Block Group | 4 |
| Census Block | 4003 |
| Census Tract | 430800 |
3871 Modesto St is owned and occupied by two individuals who acquired it in April 2014.
Source: Alameda County records, as of August 5, 2026
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 3871 MODESTO ST, CASTRO VALLEY, CA 94546-4438 |
| 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.
| Date | Document |
|---|---|
| Mar 31, 2022 | Deed of Trust, Mortgage · Reverse Mortgage AMERICAN ADVISORS GROUP |
| Jul 26, 2017 | Deed of Trust, Mortgage · Conventional Mortgage BANK OF AMERICA |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Jun 24, 1998 · Amount on File |
| Deed Sale | Jun 24, 1998 · Amount on File |
| Prior Sale | Jan 13, 1997 · Amount on File |
| Deed Document Number | 1998216440 |
| Last Transfer Date | Apr 21, 2014 |
| Transfer Doc | 0000306071 |
| Record Updated | Oct 29, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | ALAMEDA CA |
| Property Address | 3871 MODESTO ST, CASTRO VALLEY, CA 94546-4438 |
| Transaction Type | Mortgage |
| Record Updated | Apr 17, 2023 |
| Name | Verified Name |
|---|---|
| Address | 3871 MODESTO ST, CASTRO VALLEY, CA 94546-4438 |
| Document Number | 0000066313 |
|---|---|
| Date | Mar 31, 2022 |
| Instrument | 2022066313 |
| Name | AMERICAN ADVISORS GROUP |
|---|---|
| Type | Mortgage Company |
| Address | IRVINE, CA 92612 |
| Type | Reverse Mortgage |
|---|---|
| Amount | Amount on Record |
| Rate Type | Adjustable Rate |
|---|---|
| Rate | 3.35% |
| Adjustable | Adjustable Rate Rider |
| Change Frequency | Monthly |
| Index | 1-Year CMT |
| Max Rate | 8.35% |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | ALAMEDA CA |
| Property Address | 3871 MODESTO ST, CASTRO VALLEY, CA 94546-4438 |
| Document Number | 0000173960 |
| Instrument Date | Jul 26, 2017 |
| Transaction Type | Mortgage |
| Record Updated | Aug 24, 2018 |
| Title Company | FIRST AMERICAN TITLE, FIRST AMERICAN TITLE INSURANCE |
| Name | Verified Name |
|---|---|
| Relationship | Tenants in Common |
| Address | 3871 MODESTO ST CASTRO VALLEY CA 945464438, CASTRO VALLEY, CA 94546-4438 |
| Document Number | 0000173960 |
|---|---|
| Date | Aug 9, 2017 |
| Instrument | 173960 |
| Name | BANK OF AMERICA |
|---|---|
| Type | Bank |
| Address | CHARLOTTE, NC 28255 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 360 Months |
| Due | Aug 8, 2047 |
The 2025 property tax bill for 3871 Modesto St was $4,125 with a homeowner's exemption.
Source: Alameda County assessment roll, as of August 5, 2026
| Type | Name |
|---|---|
| State | California |
| County | Alameda County |
| Unified School District | Castro Valley Unified School District (KG - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2026 | $281,555 (-0.47%) Land $85,827 Building $202,728 | ||
| 2025 | $4,125.00 Homeowner's exemption | $282,897 Land $84,144 Building $198,753 | |
| 2023 | $3,940.00 Homeowner's exemption | $271,914 Land $80,877 Building $191,037 | $756,270 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 3871 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.
The area around 3871 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.
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 |
| 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.
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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