Alameda County property record for 1900 Joan Dr, Castro Valley, CA 94578
| Property Type | Triplex |
|---|---|
| Details | 5 bd · 3 ba · 2,254 sqft · built 1957 |
| Lot Size | 0.178 acres (7,758 sqft) |
| Owner | Company Name on File |
| Last Sale | $185,000 (Aug 2020) |
| Tax Bill | $9,542 (2025) |
| Deeds & Mortgages | Dec 2021 Transfer Aug 2020 Sale |
| Flood Zone | Zone X (minimal risk) |
| APN | 79-7-1 |
| Primary APN | 79-7-1 |
|---|---|
| Alternative APN |
|
| Bedrooms | 5 Beds |
|---|---|
| Full Baths | 3 Baths |
| Total Rooms | 10 Rooms |
| Units | 3 Units |
| Stories | 1 Story |
| Building Area | 2,254 sqft Living Area |
| Year Built | Built 1957 |
|---|---|
| Effective Year Built | Effective 1957 |
| Construction Type | Wood |
| Lot Area | 7,758 sqft (0.178 acres) |
| Street Address | 1900 JOAN DR |
|---|---|
| City | CASTRO VALLEY |
| State | CA |
| Zip | 94578-1323 |
| Property Category | Residential |
| Property Type | Residential > Multi-Unit > Triplex |
| Legal Description | LOT: 00001 BLK: AR: 0079 PAGE: 0007 |
| Legal Subdivision | HILLCREST KNOLLS |
| Jurisdiction | ALAMEDA CA |
| Township / Civil Division | HAYWARD |
| Census Block Group | 3 |
| Census Block | 3010 |
| Census Tract | 432800 |
Source: Alameda County assessment roll, 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 File |
|---|---|
| Mailing Address | 15 ESCALON DR, MILL VALLEY, CA 94941-1339 |
| Owner Type | Company |
| Vesting | Trust |
| Date | Document |
|---|---|
| Dec 6, 2021 | Intrafamily Transfer, Transfer |
| Aug 20, 2020 | Quit Claim Deed, Transfer NOT AVAILABLE |
| Deed Names | Verified Name on Deed |
|---|---|
| Last Sale | Aug 20, 2020 · Amount on Record |
| Deed Sale | Aug 20, 2020 · Amount on Record |
| Deed Document Number | 2020204985 |
| Last Transfer Date | Nov 29, 2021 |
| Transfer Doc | 0000388410 |
| Record Updated | Sep 20, 2026 |
| Document Type | Intrafamily Transfer |
|---|---|
| Jurisdiction | ALAMEDA CA |
| Recording Date | Dec 6, 2021 |
| Property Address | 1900 JOAN DR, SAN LEANDRO, CA 94578-1323 |
| Document Number | 0000388410 |
| Map Reference | MB 4 PG 56 |
| Instrument Date | Nov 29, 2021 |
| Instrument | 2021388410 |
| Transaction Type | Transfer |
| Record Updated | Jun 7, 2023 |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | Transfer Tax Exempt |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Family Trust |
| Address | 15 ESCALON DR, MILL VALLEY, CA 94941-1339 |
| Document Type | Quit Claim Deed |
|---|---|
| Jurisdiction | ALAMEDA CA |
| Recording Date | Aug 20, 2020 |
| Property Address | 1900 JOAN DR, SAN LEANDRO, CA 94578-1323 |
| Document Number | 0000204985 |
| Instrument Date | Jul 29, 2014 |
| Instrument | 204985 |
| Transaction Type | Transfer |
| Record Updated | Oct 13, 2020 |
| Title Company | NOT AVAILABLE |
| Amount | Amount Recorded |
|---|---|
| Tax | $204.00 |
| Amount Accuracy | Full Value |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Address | 15 ESCALON DR MILL VALLEY CA 949411339, MILL VALLEY, CA 94941-1339 |
Source: Alameda County assessment roll, as of August 5, 2026
| Type | Name |
|---|---|
| State | California |
| County | Alameda County |
| Unified School District | San Leandro Unified School District (KG - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $615,367 (+2%) Land $200,823 Building $414,544 | |
| 2025 | $9,542.00 (+5.38%) | $603,304 (+4.04%) Land $196,886 Building $406,418 |
| 2023 | $9,055.00 | $579,884 Land $189,243 Building $390,641 |
Assessed value is set for property tax purposes and is not a market price estimate.
Source: FEMA National Flood Hazard Layer, effective May 25, 2026 · OpenFEMA NFIP redacted claims and policies, as of September 2026
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
| Community Rating System | Class 7 (15% premium discount) |
| Nearby Flood Policies | 1 in force |
Values are read at the parcel center point; flood claims are located to the census block group, not this parcel; lenders make the official flood determination.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Low lower than 99.1% of the US · lower than 99.2% of California |
|---|---|
| Wildfire Likelihood | Under 0.01% annual chance |
| Exposure | None beyond ember reach |
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 791 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| AT&T Fiber · Fixed Wireless, DSL in parts of the area | 5,000 / 5,000 |
| Xfinity Cable | 2,000 / 250 |
| Verizon Fixed Wireless | 300 / 20 |
May also be available: California Internet, Etheric Communications, LLC., Sonic Telecom, T-Mobile USA, Unwired.
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