Alameda County property record for 20106 Sapphire St, Castro Valley, CA 94546
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 1 ba · 1,060 sqft · built 1950 |
| Lot Size | 0.147 acres (6,381 sqft) |
| Owner | 2 Individual Names on Record |
| Last Sale | $766,000 (Jun 2018) |
| Tax Bill | $11,071 (2025) |
| Deeds & Mortgages | Oct 2025 Line of Credit Jan 2021 Mortgage + 2 more |
| Flood Zone | Zone X (minimal risk) |
| APN | 84C-1064-83 |
| Primary APN | 84C-1064-83 |
|---|---|
| Alternative APN |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 1 Bath |
| Total Rooms | 5 Rooms |
| Stories | 1 Story |
| Building Area | 1,060 sqft Living Area |
| Year Built | Built 1950 |
|---|---|
| Effective Year Built | Effective 1950 |
| Architectural Style | L-Shape |
| Construction Type | Wood |
| Lot Area | 6,381 sqft (0.147 acres) |
| Garage Type | Carport |
| Carport | Carport |
| Street Address | 20106 SAPPHIRE ST |
|---|---|
| City | CASTRO VALLEY |
| State | CA |
| Zip | 94546-4728 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | LOT: 00028 BLK: 0002 TR: 0979 |
| Legal Subdivision | TR 979 |
| Legal Tract | 0979 |
| Legal Block | 2 |
| Legal Lot Number | 28 |
| Jurisdiction | ALAMEDA CA |
| Township / Civil Division | HAYWARD |
| Census Block Group | 3 |
| Census Block | 3003 |
| Census Tract | 430800 |
Source: Alameda County records, as of August 5, 2026
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | 2 Individual Names on Record |
|---|---|
| Mailing Address | 20106 SAPPHIRE ST, CASTRO VALLEY, CA 94546-4728 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Community Property |
| Date | Document |
|---|---|
| Oct 13, 2025 | Deed of Trust, Mortgage · Line of Credit BANK OF AMERICA NA |
| Jan 15, 2021 | Deed of Trust, Mortgage · Conventional Mortgage BANK OF AMERICA NA |
| Jun 18, 2018 | Grant Deed, Transfer · Conventional Mortgage MOVEMENT MORTGAGE |
| Oct 30, 2017 | Deed of Trust, Mortgage · Conventional Mortgage BANK OF THE WEST |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Jun 18, 2018 · Amount on Record |
| Deed Sale | Jun 18, 2018 · Amount on Record |
| Prior Sale | Oct 24, 2005 · Amount on Record |
| Deed Document Number | 2018120074 |
| Prior Transfer Date | Dec 17, 2014 |
| Prior Transfer Doc | 0000312315 |
| Record Updated | Oct 29, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | ALAMEDA CA |
| Property Address | 20106 SAPPHIRE ST, CASTRO VALLEY, CA 94546-4728 |
| Transaction Type | Mortgage |
| Record Updated | Nov 5, 2025 |
| Title Company | WFG LENDER SERVICES |
| Name | Verified Name |
|---|---|
| Address | 20106 SAPPHIRE ST, CASTRO VALLEY, CA 94546-4728 |
| Document Number | 0000127961 |
|---|---|
| Date | Oct 13, 2025 |
| Instrument | 2025127961 |
| Name | BANK OF AMERICA NA |
|---|---|
| Type | Bank |
| Address | 100 N TRYON ST, CHARLOTTE, NC 28202 |
| Type | Line of Credit |
|---|---|
| Amount | Amount Recorded |
| Term | 360 Months |
| Due | Oct 3, 2055 |
| Change Frequency | Monthly |
|---|
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | ALAMEDA CA |
| Property Address | 20106 SAPPHIRE ST, CASTRO VALLEY, CA 94546-4728 |
| Transaction Type | Mortgage |
| Record Updated | Mar 18, 2021 |
| Title Company | WFG LENDER SERVICES |
| Name | Verified Name |
|---|---|
| Address | 20106 SAPPHIRE ST, CASTRO VALLEY, CA 94546-4728 |
| Document Number | 0000020310 |
|---|---|
| Date | Jan 15, 2021 |
| Instrument | 2021020310 |
| Name | BANK OF AMERICA NA |
|---|---|
| Type | Bank |
| Address | CHARLOTTE, NC 28255 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 361 Months |
| Due | Feb 1, 2051 |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | ALAMEDA CA |
| Recording Date | Jun 18, 2018 |
| Property Address | 20106 SAPPHIRE ST, CASTRO VALLEY, CA 94546-4728 |
| Document Number | 0000120074 |
| Map Reference | MB 30 PG 50 |
| Instrument Date | Jun 13, 2018 |
| Instrument | 2018120074 |
| Transaction Type | Transfer |
| Record Updated | Aug 19, 2021 |
| Title Company | OLD REPUBLIC TITLE COMPANY |
| Amount | Amount Recorded |
|---|---|
| Downpayment | Downpayment on Record |
| Loan-to-Value (LTV) | LTV on Record |
| Tax | $0.00 |
| Amount Accuracy | Rounded by County |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Community Property with Right of Survivorship |
| Address | 20606 SAPPHIRE ST, CASTRO VALLEY, CA 94546 |
| Document Number | 0000120075 |
|---|---|
| Date | Jun 18, 2018 |
| Instrument | 2018120075 |
| Name | MOVEMENT MORTGAGE |
|---|---|
| Type | Mortgage Company |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 361 Months |
| Due | Jul 1, 2048 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | ALAMEDA CA |
| Property Address | 20106 SAPPHIRE ST, CASTRO VALLEY, CA 94546-4728 |
| Document Number | 0000266192 |
| Instrument Date | Oct 30, 2017 |
| Transaction Type | Mortgage |
| Record Updated | Jan 5, 2018 |
| Title Company | FIRST AMERICAN TITLE |
| Name | Verified Name |
|---|---|
| Relationship | Joint Tenants with Right of Survivorship |
| Address | 20106 SAPPHIRE ST CASTRO VALLEY CA 945464728, CASTRO VALLEY, CA 94546-4728 |
| Document Number | 0000266192 |
|---|---|
| Date | Dec 4, 2017 |
| Instrument | 266192 |
| Name | BANK OF THE WEST |
|---|---|
| Type | Bank |
| Address | OMAHA, NE 68154 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 360 Months |
| Due | Dec 3, 2047 |
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 | $881,988 (+1.2%) Land $266,696 Building $622,292 | ||
| 2025 | $11,071.00 (+3.89%) Homeowner's exemption | $871,561 (+4.04%) Land $261,468 Building $610,093 | |
| 2023 | $10,656.00 Homeowner's exemption | $837,720 Land $251,316 Building $586,404 | $858,600 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
Source: FEMA National Flood Hazard Layer, effective May 25, 2026
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
Values are read at the parcel center point; lenders make the official flood determination.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Low lower than 66% of the US · lower than 80% of California |
|---|---|
| Wildfire Likelihood | 0.02% annual chance |
| Exposure | None beyond 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 442 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Xfinity Cable | 2,000 / 250 |
| Verizon Fixed Wireless | 300 / 20 |
| AT&T DSL · Fiber, Fixed Wireless in parts of the area | 100 / 20 |
May also be available: Etheric Networks, GeoLinks, Sonic Telecom, T-Mobile, Unwired.
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