Alameda County property record for 18521 Agate Ct, Castro Valley, CA 94546 · Last verified October 2025
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 3 ba · 2,525 sqft · built 1990 |
| Lot Size | 0.218 acres (9,534 sqft) |
| Owner | Company Name on File |
| Last Sale | $1,348,000 (Jun 2021) |
| Tax Bill | $18,004 (2025) |
| Deeds & Mortgages | Mar 2024 Transfer Jun 2021 Sale & Mortgage |
| Flood Zone | Zone X (minimal risk) |
| APN | 84D-1211-32 |
| Primary APN | 84D-1211-32 |
|---|---|
| Alternative APN |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 3 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 8 Rooms |
| Stories | 1 Story |
| Building Area | 2,525 sqft Living Area |
| Year Built | Built 1990 |
|---|---|
| Architectural Style | Other |
| Construction Type | Wood |
| Lot Area | 9,534 sqft (0.218 acres) |
| Street Address | 18521 AGATE CT |
|---|---|
| City | CASTRO VALLEY |
| State | CA |
| Zip | 94546-2266 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | PARCEL MAPS 5392 LOT 3 |
| Jurisdiction | ALAMEDA CA |
| Township / Civil Division | HAYWARD |
| Census Block Group | 2 |
| Census Block | 2007 |
| Census Tract | 430300 |
Source: Alameda County records · APN 84D-1211-32
Assessment roll updated July 1, 2025 · Last verified October 2025
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | Company Name on File |
|---|---|
| Co-owner | Verified Secondary Owner |
| Mailing Address | 18521 AGATE CT, CASTRO VALLEY, CA 94546-2266 |
| Occupancy | Owner Occupied |
| Owner Type | Company |
| Vesting | Trust |
| Date | Document |
|---|---|
| Mar 12, 2024 | Intrafamily Transfer, Transfer |
| Jun 18, 2021 | Grant Deed, Transfer · Conventional Mortgage AMERIS BANK |
| Deed Names | 2 Verified Names on Deed |
|---|---|
| Last Sale | Jun 18, 2021 · Amount on Record |
| Deed Sale | Jun 18, 2021 · Amount on Record |
| Prior Sale | Jun 18, 2021 · Amount on Record |
| Deed Document Number | 0000220357 |
| Last Transfer Date | Mar 12, 2024 |
| Transfer Doc | 0000035141 |
| Record Updated | Jun 08, 2026 |
| Document Type | Intrafamily Transfer |
|---|---|
| Jurisdiction | ALAMEDA CA |
| Recording Date | Mar 12, 2024 |
| Property Address | 18521 AGATE CT, CASTRO VALLEY, CA 94546-2266 |
| Document Number | 0000035141 |
| Map Reference | MB 182 PG 89 |
| Instrument Date | Dec 20, 2023 |
| Instrument | 2024035141 |
| Transaction Type | Transfer |
| Record Updated | Apr 18, 2024 |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | Transfer Tax Exempt |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Living Trust |
| Address | 18521 AGATE CT, CASTRO VALLEY, CA 94546-2266 |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | ALAMEDA CA |
| Recording Date | Jun 18, 2021 |
| Property Address | 18521 AGATE CT, CASTRO VALLEY, CA 94546-2266 |
| Document Number | 0000220357 |
| Map Reference | MB 182 PG 89 |
| Instrument Date | Jun 09, 2021 |
| Instrument | 2021220357 |
| Transaction Type | Transfer |
| Record Updated | Jul 07, 2021 |
| Title Company | OLD REPUBLIC TITLE, OLD REPUBLIC TITLE COMPANY |
| Amount | Amount Recorded |
|---|---|
| Downpayment | Downpayment on File |
| Loan-to-Value (LTV) | LTV on Record |
| Tax | $0.00 |
| Amount Accuracy | Rounded by County |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Address | 166 POPE ST, SAN FRANCISCO, CA 94112-3723 |
| Document Number | 0000220358 |
|---|---|
| Date | Jun 18, 2021 |
| Instrument | 2021220358 |
| Name | AMERIS BANK |
|---|---|
| Type | Bank |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 355 Months |
| Due | Jan 30, 2051 |
Source: Alameda County records · Assessment roll updated July 1, 2025 · Last verified October 2025
| Type | Name |
|---|---|
| State | California |
| County | Alameda County |
| Unified School District | Castro Valley Unified School District (KG - 12) |
Assessed value is set for property tax purposes and is not a market price estimate.
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2025 | $18,004.00 (+3.71%) Homeowner's exemption | $1,459,101 (+4.04%) Land $437,730 Building $1,021,371 |
| 2023 | $17,360.00 Homeowner's exemption | $1,402,458 Land $420,737 Building $981,721 |
Source: FEMA National Flood Hazard Layer, Alameda County (06001C), updated May 25, 2026 · FEMA OpenFEMA NFIP redacted claims and policies, census block group 060014303002, refreshed September 2026 · USDA Forest Service Wildfire Risk to Communities, 2nd edition (2024), fuels as of 2020 · Last verified October 2026
| FEMA Flood Zone | Zone X |
|---|---|
| Special Flood Hazard Area | No |
| Flood Hazard | Minimal |
| 500-Year Floodplain | No |
| Community Rating System | Class 7 (15% premium discount) |
| Nearby Flood Policies | 1 in force |
| Wildfire Risk | Not rated no burnable land in reach |
|---|---|
| Wildfire Likelihood | Negligible |
| Exposure | None beyond ember reach |
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.
Source: FCC Broadband Data Collection, availability as of December 31, 2025 · Published October 2026 · based on 724 locations within about half a mile of this property
| Provider | Technology | Download / Upload (Mbps) |
|---|---|---|
| Sonic Telecom | Fiber | 10,000 / 10,000 |
| AT&T | Fiber | 5,000 / 5,000 |
| Xfinity | Cable | 2,000 / 250 |
| Verizon | Fixed Wireless | 300 / 20 |
May also be available at this address: T-Mobile USA, Etheric Communications, LLC., AT&T, California Internet. Availability varies by address; speeds are provider-advertised maximums, not measured.
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