Alameda County property record for 4818 Seaview Ave, Castro Valley, CA 94546
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 2 ba · 2,160 sqft · built 1947 |
| Lot Size | 0.317 acres (13,800 sqft) |
| Owner | 2 Individual Names on File |
| Tax Bill | $2,789 (2025) |
| Deeds & Mortgages | Sep 2025 Line of Credit Jan 2021 Mortgage |
| Flood Zone | Zone X (minimal risk) |
| APN | 84C-935-4 |
| Primary APN | 84C-935-4 |
|---|---|
| Alternative APN |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 8 Rooms |
| Stories | 2 Stories |
| Building Area | 2,160 sqft Living Area |
| Year Built | Built 1947 |
|---|---|
| Effective Year Built | Effective 1947 |
| Architectural Style | Custom Design |
| Construction Type | Wood |
| Lot Area | 13,800 sqft (0.317 acres) |
| Garage Type | Carport |
| Carport | Carport |
| Street Address | 4818 SEAVIEW AVE |
|---|---|
| City | CASTRO VALLEY |
| State | CA |
| Zip | 94546-2345 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | LOT: 00004 BLK: AR: 084C PAGE: 0935 ;LOT: 0000B BLK: MP: 0017 PAGE: 0036 |
| Legal Subdivision | VAN HOOSEAR |
| Jurisdiction | ALAMEDA CA |
| Township / Civil Division | HAYWARD |
| Census Block Group | 5 |
| Census Block | 5004 |
| Census Tract | 430200 |
4818 Seaview Ave is owned and occupied by two individuals who acquired it in August 2025.
Source: Alameda County records, as of August 5, 2026
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 4818 SEAVIEW AVE, CASTRO VALLEY, CA 94546-2345 |
| 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 |
|---|---|
| Sep 15, 2025 | Intrafamily Transfer, Transfer · Line of Credit FREMONT BANK |
| Jan 7, 2021 | Deed of Trust, Mortgage · Conventional Mortgage FREMONT BANK |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Transfer Date | Aug 28, 2025 |
| Transfer Doc | 0000115313 |
| Record Updated | Sep 20, 2026 |
| Document Type | Intrafamily Transfer |
|---|---|
| Jurisdiction | ALAMEDA CA |
| Recording Date | Sep 15, 2025 |
| Property Address | 4818 SEAVIEW AVE, CASTRO VALLEY, CA 94546-2345 |
| Document Number | 0000115313 |
| Map Reference | MB 17 PG 36 |
| Instrument Date | Aug 28, 2025 |
| Instrument | 2025115313 |
| Transaction Type | Transfer |
| Record Updated | Oct 8, 2025 |
| Title Company | UNKNOWN, FNTG LENDERS DIRECT |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | No Consideration Stated |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Joint Tenants |
| Address | 4818 SEAVIEW AVE, CASTRO VALLEY, CA 94546-2345 |
| Document Number | 0000115314 |
|---|---|
| Date | Sep 15, 2025 |
| Instrument | 2025115314 |
| Name | FREMONT BANK |
|---|---|
| Type | Bank |
| Type | Line of Credit |
|---|---|
| Amount | Amount on Record |
| Term | 360 Months |
| Due | Sep 20, 2055 |
| Change Frequency | Monthly |
|---|
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | ALAMEDA CA |
| Property Address | 4818 SEAVIEW AVE, CASTRO VALLEY, CA 94546-2345 |
| Transaction Type | Mortgage |
| Record Updated | Mar 19, 2021 |
| Title Company | FIDELITY TITLE COMPANY |
| Name | Verified Name |
|---|---|
| Address | 4818 SEAVIEW AVE, CASTRO VALLEY, CA 94546-2345 |
| Document Number | 0000007951 |
|---|---|
| Date | Jan 7, 2021 |
| Instrument | 2021007951 |
| Name | FREMONT BANK |
|---|---|
| Type | Bank |
| Address | LIVERMORE, CA 94551 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 360 Months |
| Due | Jan 1, 2051 |
The 2025 property tax bill for 4818 Seaview Ave was $2,789.
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 | $166,117 (-2.12%) Land $43,026 Building $130,091 | ||
| 2025 | $2,789.00 Homeowner's exemption | $169,722 Land $42,182 Building $127,540 | |
| 2023 | $2,648.00 Homeowner's exemption | $163,132 Land $40,544 Building $122,588 | $1,231,200 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 4818 Seaview Ave in Zone X, an area of minimal flood risk, though there have been 1 flood claim nearby since 2022.
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 |
| Nearby Flood Claims | 1 (2022) |
| Claims Outside the SFHA | 1 of 1 |
| Most Recent Claim | Dec 2022 · Severe Winter Storms, Flooding, Landslides, And Mudslides |
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 risk around 4818 Seaview Ave is low, with a 0.02% 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 | 0.02% annual chance |
| Exposure | Indirect 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 666 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 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, T-Mobile, Unwired.
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