Alameda County property record for 20124 Sapphire St, Castro Valley, CA 94546
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 1 ba · 1,060 sqft · built 1950 |
| Lot Size | 0.143 acres (6,248 sqft) |
| Owner | 2 Individual Names on Record |
| Last Sale | $749,000 (Oct 2019) |
| Tax Bill | $11,118 (2025) |
| Deeds & Mortgages | Dec 2023 Line of Credit Nov 2020 Mortgage + 1 more |
| Flood Zone | Zone X (minimal risk) |
| APN | 84C-1064-84 |
| Primary APN | 84C-1064-84 |
|---|---|
| Alternative APN |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 1 Bath |
| Total Rooms | 5 Rooms |
| Stories | 1 Story |
| Building Area | 1,060 sqft Living Area |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1950 |
|---|---|
| Effective Year Built | Effective 1950 |
| Architectural Style | L-Shape |
| Exterior Material | Wood Siding |
| Construction Type | Wood |
| Roof Material | Tar & Gravel |
| Lot Area | 6,248 sqft (0.143 acres) |
| Lot Dimensions | 105 ft deep x 59 ft wide |
| Heating System | Floor/Wall Furnace |
|---|---|
| Heating Fuel | Gas |
| Sewer | Municipal |
| Water Source | Commercial |
| Street Address | 20124 SAPPHIRE ST |
|---|---|
| City | CASTRO VALLEY |
| State | CA |
| Zip | 94546-4728 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R1 |
| Legal Description | LOT: 00029 BLK: 0002 TR: 0979 |
| Legal Subdivision | TRACT 979 FILED MARCH 3 1950 |
| Legal Tract | 0979 |
| Legal Lot Number | 29 |
| 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 | 20124 SAPPHIRE ST, CASTRO VALLEY, CA 94546-4728 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Date | Document |
|---|---|
| Dec 12, 2023 | Deed of Trust, Mortgage · Line of Credit UNITED WHOLESALE MORTGAGE |
| Nov 16, 2020 | Deed of Trust, Mortgage · VA Mortgage LAKEVIEW CMNTY CAP LLC |
| Oct 29, 2019 | Grant Deed, Transfer · VA Mortgage AMERICAN PACIFIC MORTGAGE CORP |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Oct 29, 2019 · Amount on Record |
| Deed Sale | Oct 29, 2019 · Amount on Record |
| Prior Sale | Oct 28, 1998 · Amount on Record |
| Deed Document Number | 2019220030 |
| Prior Transfer Date | Mar 3, 1997 |
| Prior Transfer Doc | 0000103856 |
| Record Updated | Oct 29, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | ALAMEDA CA |
| Property Address | 20124 SAPPHIRE ST, CASTRO VALLEY, CA 94546-4728 |
| Transaction Type | Mortgage |
| Record Updated | Feb 6, 2024 |
| Title Company | CHICAGO TITLE COMPANY |
| Name | Verified Name |
|---|---|
| Address | 20124 SAPPHIRE ST, CASTRO VALLEY, CA 94546-4728 |
| Document Number | 0000144813 |
|---|---|
| Date | Dec 12, 2023 |
| Instrument | 2023144813 |
| Name | UNITED WHOLESALE MORTGAGE |
|---|---|
| Type | Mortgage Company |
| Address | PONTIAC, MI 48341 |
| Type | Line of Credit |
|---|---|
| Amount | Amount Recorded |
| Term | 361 Months |
| Due | Jan 1, 2054 |
| Rate Type | Adjustable Rate |
|---|---|
| Change Frequency | Monthly |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | ALAMEDA CA |
| Property Address | 20124 SAPPHIRE ST, CASTRO VALLEY, CA 94546-4728 |
| Document Number | 0000327509 |
| Instrument Date | Nov 16, 2020 |
| Transaction Type | Mortgage |
| Record Updated | Feb 5, 2021 |
| Title Company | TITLE SERVICE AND LIAISON COMPANIES, INDECOMM GLOBAL SVCS |
| Name | Verified Name |
|---|---|
| Relationship | Community Property |
| Address | 20124 SAPPHIRE ST CASTRO VALLEY CA 945464728, CASTRO VALLEY, CA 94546-4728 |
| Document Number | 0000327509 |
|---|---|
| Date | Nov 30, 2020 |
| Instrument | 327509 |
| Name | LAKEVIEW CMNTY CAP LLC |
|---|---|
| Address | HORSHAM, PA 19044 |
| Type | VA Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 360 Months |
| Due | Nov 29, 2050 |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | ALAMEDA CA |
| Recording Date | Oct 29, 2019 |
| Property Address | 20124 SAPPHIRE ST, CASTRO VALLEY, CA 94546-4728 |
| Document Number | 0000220030 |
| Map Reference | MB 30 PG 50 |
| Instrument Date | Oct 23, 2019 |
| Instrument | 2019220030 |
| Transaction Type | Transfer |
| Record Updated | Aug 19, 2021 |
| Title Company | NORTH AMERICAN TITLE CO |
| 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 | 20124 SAPPHIRE ST, CASTRO VALLEY, CA 94546-4728 |
| Document Number | 0000220031 |
|---|---|
| Date | Oct 29, 2019 |
| Instrument | 2019220031 |
| Name | AMERICAN PACIFIC MORTGAGE CORP |
|---|---|
| Type | Mortgage Company |
| Type | VA Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 361 Months |
| Due | Nov 1, 2049 |
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 | $958,409 (+17%) Land $250,987 Building $707,422 | ||
| 2025 | $11,118.00 (+9.63%) | $819,128 (+4.04%) Land $246,066 Building $573,062 | |
| 2023 | $10,141.00 | $787,326 Land $236,513 Building $550,813 | $833,580 |
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 |
|---|---|
| Nearest Special Flood Hazard Area | Zone A, within 500 ft |
| 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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