Alameda County property record for 20089 Sapphire St, Castro Valley, CA 94546
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 2 ba · 1,684 sqft · built 1950 |
| Lot Size | 0.144 acres (6,273 sqft) |
| Owner | Individual Name on Record |
| Last Sale | $845,000 (Jan 2020) |
| Tax Bill | $11,774 (2025) |
| Deeds & Mortgages | Sep 2021 Mortgage Oct 2020 Mortgage + 3 more |
| Flood Zone | Zone X (minimal risk) |
| APN | 84C-1064-14 |
| Primary APN | 84C-1064-14 |
|---|---|
| Alternative APN |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 7 Rooms |
| Stories | 1 Story |
| Building Area | 1,684 sqft Living Area |
| Year Built | Built 1950 |
|---|---|
| Effective Year Built | Effective 1961 |
| Architectural Style | L-Shape |
| Construction Type | Wood |
| Lot Area | 6,273 sqft (0.144 acres) |
| Parking Spaces | 1 Parking Space |
| Street Address | 20089 SAPPHIRE ST |
|---|---|
| City | CASTRO VALLEY |
| State | CA |
| Zip | 94546-4727 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | LOT: 00001 BLK: 0001 TR: 0979 |
| Legal Subdivision | TRACT 979 |
| Legal Tract | 0979 |
| Legal Lot Number | 1 |
| Jurisdiction | ALAMEDA CA |
| Township / Civil Division | HAYWARD |
| Census Block Group | 3 |
| Census Block | 3005 |
| 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 | Individual Name on Record |
|---|---|
| Mailing Address | 20089 SAPPHIRE ST, CASTRO VALLEY, CA 94546-4727 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Date | Document |
|---|---|
| Sep 13, 2021 | Intrafamily Transfer, Transfer · Conventional Mortgage ROCKET MORTGAGE LLC |
| Oct 19, 2020 | Deed of Trust, Mortgage · Conventional Mortgage UNITED WHOLESALE MORTGAGE |
| Jan 17, 2020 | Quit Claim Deed, Transfer FIRST AMERICAN TITLE |
| Jan 17, 2020 | Grant Deed, Transfer · Conventional Mortgage R M K FINANCIAL CORP |
| May 8, 2018 | Grant Deed, Transfer CHICAGO TITLE COMPANY |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Jan 17, 2020 · Amount on Record |
| Deed Sale | Jan 17, 2020 · Amount on Record |
| Prior Sale | May 8, 2018 · Amount on Record |
| Deed Document Number | 202010910 |
| Last Transfer Date | Sep 8, 2021 |
| Transfer Doc | 0000308594 |
| Record Updated | Sep 20, 2026 |
| Document Type | Intrafamily Transfer |
|---|---|
| Jurisdiction | ALAMEDA CA |
| Recording Date | Sep 13, 2021 |
| Property Address | 20089 SAPPHIRE ST, CASTRO VALLEY, CA 94546-4727 |
| Document Number | 0000308594 |
| Map Reference | MB 30 PG 50 |
| Instrument Date | Sep 8, 2021 |
| Instrument | 2021308594 |
| Transaction Type | Transfer |
| Record Updated | Sep 30, 2021 |
| Title Company | FNTG LENDERS DIRECT |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | Transfer Tax Exempt |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Address | 20089 SAPPHIRE ST, CASTRO VALLEY, CA 94546-4727 |
| Document Number | 0000308595 |
|---|---|
| Date | Sep 13, 2021 |
| Instrument | 2021308595 |
| Name | ROCKET MORTGAGE LLC |
|---|---|
| Type | Mortgage Company |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 241 Months |
| Due | Oct 1, 2041 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | ALAMEDA CA |
| Property Address | 20089 SAPPHIRE ST, CASTRO VALLEY, CA 94546-4727 |
| Transaction Type | Mortgage |
| Record Updated | Feb 5, 2021 |
| Title Company | FIDELITY NATIONAL TITLE |
| Name | Verified Name |
|---|---|
| Address | 20089 SAPPHIRE ST, CASTRO VALLEY, CA 94546-4727 |
| Document Number | 0000277346 |
|---|---|
| Date | Oct 19, 2020 |
| Instrument | 2020277346 |
| Name | UNITED WHOLESALE MORTGAGE |
|---|---|
| Type | Mortgage Company |
| Address | PONTIAC, MI 48341 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 361 Months |
| Due | Nov 1, 2050 |
| Document Type | Quit Claim Deed |
|---|---|
| Jurisdiction | ALAMEDA CA |
| Recording Date | Jan 17, 2020 |
| Property Address | 20089 SAPPHIRE ST, CASTRO VALLEY, CA 94546-4727 |
| Document Number | 0000010909 |
| Instrument Date | Dec 31, 2019 |
| Instrument | 10909 |
| Transaction Type | Transfer |
| Record Updated | Mar 6, 2020 |
| Title Company | FIRST AMERICAN TITLE |
| Tax | $0.00 |
|---|---|
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Separate Estate/Property |
| Address | 20089 SAPPHIRE ST CASTRO VALLEY CA 945464727, CASTRO VALLEY, CA 94546-4727 |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | ALAMEDA CA |
| Recording Date | Jan 17, 2020 |
| Property Address | 20089 SAPPHIRE ST, CASTRO VALLEY, CA 94546-4727 |
| Document Number | 0000010910 |
| Map Reference | MB 30 PG 50 |
| Instrument Date | Nov 26, 2019 |
| Instrument | 2020010910 |
| Transaction Type | Transfer |
| Record Updated | Aug 19, 2021 |
| Title Company | FIRST AMERICAN 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 |
|---|---|
| Address | 20089 SAPPHIRE ST, CASTRO VALLEY, CA 94546-4727 |
| Document Number | 0000010911 |
|---|---|
| Date | Jan 17, 2020 |
| Instrument | 2020010911 |
| Name | R M K FINANCIAL CORP |
|---|---|
| Type | Mortgage Company |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 361 Months |
| Due | Feb 1, 2050 |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | ALAMEDA CA |
| Recording Date | May 8, 2018 |
| Property Address | 20089 SAPPHIRE ST, CASTRO VALLEY, CA 94546-4727 |
| Document Number | 0000091383 |
| Instrument Date | May 2, 2018 |
| Instrument | 91383 |
| Transaction Type | Transfer |
| Record Updated | May 25, 2018 |
| Title Company | CHICAGO TITLE COMPANY |
| Amount | Amount Recorded |
|---|---|
| Tax | $929.50 |
| Amount Accuracy | Full Value |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Address | 100 N HL D R #12 BRISBANE CA 94005, 12, BRISBANE, CA 94005 |
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 | $942,597 (+2%) Land $282,779 Building $659,818 | ||
| 2025 | $11,774.00 (+3.84%) | $924,117 (+4.04%) Land $277,235 Building $646,882 | |
| 2023 | $11,339.00 | $888,238 Land $266,471 Building $621,767 | $991,440 |
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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