Alameda County property record for 20049 Sapphire St, Castro Valley, CA 94546
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 2 ba · 1,871 sqft · built 1949 |
| Lot Size | 0.16 acres (6,969 sqft) |
| Owner | Company Name on Record |
| Last Sale | $130,000 (Apr 1997) |
| Tax Bill | $4,807 (2025) |
| Deeds & Mortgages | Aug 2021 Line of Credit Aug 2021 Mortgage + 1 more |
| Flood Zone | Zone X (minimal risk) |
| APN | 84C-1064-12 |
| Primary APN | 84C-1064-12 |
|---|---|
| Alternative APN |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 8 Rooms |
| Stories | 1 Story |
| Building Area | 1,871 sqft Living Area |
| Year Built | Built 1949 |
|---|---|
| Effective Year Built | Effective 1979 |
| Architectural Style | L-Shape |
| Construction Type | Wood |
| Lot Area | 6,969 sqft (0.16 acres) |
| Street Address | 20049 SAPPHIRE ST |
|---|---|
| City | CASTRO VALLEY |
| State | CA |
| Zip | 94546-4727 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | LOT: 00015 BLK: 0002 TR: 0799 |
| Legal Subdivision | TRACT 799 |
| Legal Tract | 0799 |
| Legal Block | 2 |
| Legal Lot Number | 15 |
| 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 | Company Name on Record |
|---|---|
| Mailing Address | 20049 SAPPHIRE ST, CASTRO VALLEY, CA 94546-4727 |
| Occupancy | Owner Occupied |
| Owner Type | Company |
| Vesting | Trust |
| Date | Document |
|---|---|
| Aug 31, 2021 | Deed of Trust, Mortgage · Line of Credit FREMONT BANK |
| Aug 31, 2021 | Intrafamily Transfer, Transfer · Conventional Mortgage FREMONT BANK |
| Jun 12, 2020 | Deed of Trust, Mortgage · Conventional Mortgage FREMONT BANK |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Apr 22, 1997 · Amount on Record |
| Deed Sale | Apr 22, 1997 · Amount on Record |
| Deed Document Number | 1997102022 |
| Record Updated | Oct 29, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | ALAMEDA CA |
| Property Address | 20049 SAPPHIRE ST, CASTRO VALLEY, CA 94546-4727 |
| Transaction Type | Mortgage |
| Record Updated | May 30, 2023 |
| Title Company | FIDELITY NATIONAL TITLE |
| Name | Verified Name |
|---|---|
| Address | 20049 SAPPHIRE ST, CASTRO VALLEY, CA 94546-4727 |
| Document Number | 0000295716 |
|---|---|
| Date | Aug 31, 2021 |
| Instrument | 2021295716 |
| Name | FREMONT BANK |
|---|---|
| Type | Bank |
| Address | LIVERMORE, CA 94551 |
| Type | Line of Credit |
|---|---|
| Amount | Amount Recorded |
| Term | 360 Months |
| Due | Aug 20, 2051 |
| Rate Type | Adjustable Rate |
|---|---|
| Change Frequency | Monthly |
| Document Type | Intrafamily Transfer |
|---|---|
| Jurisdiction | ALAMEDA CA |
| Recording Date | Aug 31, 2021 |
| Property Address | 20049 SAPPHIRE ST, CASTRO VALLEY, CA 94546-4727 |
| Document Number | 0000295717 |
| Map Reference | MB 27 PG 88 |
| Instrument Date | Jul 30, 2021 |
| Instrument | 2021295717 |
| Transaction Type | Transfer |
| Record Updated | May 30, 2023 |
| Title Company | FNTG LENDERS DIRECT |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | Transfer Tax Exempt |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Family Trust |
| Address | 20049 SAPPHIRE ST, CASTRO VALLEY, CA 94546-4727 |
| Investor | Possibly a Property Investor |
| Document Number | 0000295718 |
|---|---|
| Date | Aug 31, 2021 |
| Instrument | 2021295718 |
| Name | FREMONT BANK |
|---|---|
| Type | Bank |
| Address | LIVERMORE, CA 94551 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 361 Months |
| Due | Sep 1, 2051 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | ALAMEDA CA |
| Property Address | 20049 SAPPHIRE ST, CASTRO VALLEY, CA 94546-4727 |
| Transaction Type | Mortgage |
| Record Updated | Feb 5, 2021 |
| Title Company | FIDELITY NATIONAL TITLE |
| Name | Verified Name |
|---|
| Document Number | 0000135949 |
|---|---|
| Date | Jun 12, 2020 |
| Instrument | 2020135949 |
| Name | FREMONT BANK |
|---|---|
| Type | Bank |
| Address | LIVERMORE, CA 94551 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 360 Months |
| Due | Jun 1, 2050 |
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 | $340,553 (-0.05%) Land $64,785 Building $282,768 | ||
| 2025 | $4,807.00 (+4.5%) Homeowner's exemption | $340,739 (+4.04%) Land $63,515 Building $277,224 | |
| 2023 | $4,600.00 Homeowner's exemption | $327,509 Land $61,049 Building $266,460 | $924,750 |
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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