Alameda County property record for 139 Williams St, San Leandro, CA 94577
| Property Type | Quadplex |
|---|---|
| Details | 6 bd · 4 ba · 2,704 sqft · built 1959 |
| Lot Size | 0.115 acres (5,000 sqft) |
| Owner | Company Name on Record |
| Tax Bill | $8,227 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 77-550-25-1 |
| Primary APN | 77-550-25-1 |
|---|---|
| Alternative APN |
|
| Bedrooms | 6 Beds |
|---|---|
| Full Baths | 4 Baths |
| Total Rooms | 14 Rooms |
| Units | 4 Units |
| Stories | 2 Stories |
| Building Area | 2,704 sqft Living Area |
| Year Built | Built 1959 |
|---|---|
| Effective Year Built | Effective 1959 |
| Construction Type | Wood |
| Lot Area | 5,000 sqft (0.115 acres) |
| Street Address | 139 WILLIAMS ST |
|---|---|
| City | SAN LEANDRO |
| State | CA |
| Zip | 94577-5859 |
| Property Category | Residential |
| Property Type | Residential > Multi-Unit > Quadplex |
| Legal Description | LOT: 00001 BLK: 0025 AR: 0077 PAGE: 0550 |
| Legal Subdivision | OVIATTS |
| Legal Block | C |
| Legal Lot Number | B |
| Jurisdiction | ALAMEDA CA |
| Township / Civil Division | HAYWARD |
| Census Block Group | 2 |
| Census Block | 2005 |
| Census Tract | 432601 |
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 | 1715 ASTOR CT, SAN LEANDRO, CA 94577-5549 |
| Owner Type | Company |
| Vesting | Trust |
| Deed Names | Name on Deed |
|---|---|
| Last Transfer Date | Oct 11, 2001 |
| Transfer Doc | 0000403104 |
| Record Updated | Sep 20, 2026 |
Source: Alameda County assessment roll, as of August 5, 2026
| Type | Name |
|---|---|
| State | California |
| County | Alameda County |
| Municipality | San Leandro City |
| Unified School District | San Leandro Unified School District (KG - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $468,553 (+2%) Land $187,421 Building $281,132 | |
| 2025 | $8,227.00 (+8.09%) | $459,366 (+4.04%) Land $183,746 Building $275,620 |
| 2023 | $7,611.00 | $441,530 Land $176,612 Building $264,918 |
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
| 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 99.1% of the US · lower than 99.2% of California |
|---|---|
| Wildfire Likelihood | Under 0.01% 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 792 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Sonic Telecom Fiber | 10,000 / 10,000 |
| AT&T Fiber · Fixed Wireless, DSL in parts of the area | 5,000 / 5,000 |
| Xfinity Cable | 2,000 / 250 |
| Unwired Fixed Wireless | 300 / 25 |
| Starlink Satellite | 280 / 30 |
May also be available: GeoLinks, T-Mobile, Verizon.
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