Alameda County property record for 20205 Sapphire St, Castro Valley, CA 94546
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 2 ba · 1,267 sqft · built 1952 |
| Lot Size | 0.129 acres (5,625 sqft) |
| Owner | 2 Company Names on Record |
| Last Sale | $1,140,000 (Feb 2025) |
| Tax Bill | $10,545 (2025) |
| Deeds & Mortgages | Sep 2026 Sale Mar 2026 Mortgage |
| Flood Zone | Zone X (minimal risk) |
| APN | 84C-1064-38 |
| Primary APN | 84C-1064-38 |
|---|---|
| Alternative APN |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 5 Rooms |
| Stories | 1 Story |
| Building Area | 1,267 sqft Living Area |
| Year Built | Built 1952 |
|---|---|
| Effective Year Built | Effective 1953 |
| Architectural Style | L-Shape |
| Construction Type | Wood |
| Lot Area | 5,625 sqft (0.129 acres) |
| Street Address | 20205 SAPPHIRE ST |
|---|---|
| City | CASTRO VALLEY |
| State | CA |
| Zip | 94546-4729 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | LOT: 00009 BLK: 0003 TR: 1191 |
| Legal Subdivision | TRACT 1191 |
| Legal Tract | 1191 |
| Legal Block | 3 |
| Legal Lot Number | 9 |
| Jurisdiction | ALAMEDA CA |
| Township / Civil Division | HAYWARD |
| Census Block Group | 3 |
| Census Block | 3004 |
| Census Tract | 430800 |
Source: Alameda County records, as of October 21, 2026
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | 2 Company Names on Record |
|---|---|
| Mailing Address | 20205 SAPPHIRE ST, CASTRO VALLEY, CA 94546-4729 |
| Occupancy | Owner Occupied |
| Owner Type | Company |
| Vesting | Trust, Family Trust |
| Date | Document |
|---|---|
| Sep 10, 2026 | Grant Deed, Transfer NONE LISTED ON DOCUMENT |
| Mar 18, 2026 | Deed of Trust, Mortgage · Conventional Mortgage PROVIDENT FUNDING ASSOCIATES LP |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Feb 18, 2025 · Amount on Record |
| Deed Sale | Feb 18, 2025 · Amount on Record |
| Prior Sale | Nov 8, 2024 · Amount on Record |
| Deed Document Number | 202524874 |
| Prior Transfer Date | Nov 1, 2024 |
| Prior Transfer Doc | 0000138435 |
| Record Updated | Oct 29, 2026 |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | ALAMEDA CA |
| Recording Date | Sep 10, 2026 |
| Property Address | 20205 SAPPHIRE ST, CASTRO VALLEY, CA 94546-4729 |
| Document Number | 0000115551 |
| Instrument Date | Aug 29, 2026 |
| Instrument | 2026115551 |
| Transaction Type | Transfer |
| Record Updated | Oct 20, 2026 |
| Title Company | NONE LISTED ON DOCUMENT |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | Full Amount Stated |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Family Trust |
| Address | 20205 SAPPHIRE ST, CASTRO VALLEY, CA 94546-4729 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | ALAMEDA CA |
| Property Address | 20205 SAPPHIRE ST, CASTRO VALLEY, CA 94546-4729 |
| Transaction Type | Mortgage |
| Record Updated | May 1, 2026 |
| Title Company | FIDELITY NATIONAL TITLE, FIDELITY NATIONAL TITLE CO |
| Name | Verified Name |
|---|---|
| Address | 20205 SAPPHIRE ST, CASTRO VALLEY, CA 94546-4729 |
| Document Number | 0000035553 |
|---|---|
| Date | Mar 18, 2026 |
| Instrument | 2026035553 |
| Name | PROVIDENT FUNDING ASSOCIATES LP |
|---|---|
| Type | Mortgage Company |
| Address | 1235 N DUTTON AVE, SANTA ROSA, CA 95401 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 241 Months |
| Due | Apr 1, 2046 |
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 | $1,155,800 (+40.95%) Land $348,840 Building $813,960 | ||
| 2025 | $10,545.00 (+166.56%) | $820,000 (+207.73%) Land $246,000 Building $574,000 | |
| 2024 | $3,956.00 (+2.09%) | ||
| 2023 | $3,875.00 Homeowner's exemption | $266,464 Land $103,208 Building $163,256 | $947,520 |
Assessed value and assessed market value are set for property tax purposes, not market price estimates; both are a fraction of this property's market value.
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.
Search by:
By searching, you agree to: Terms • Privacy • Disclosures