Alameda County property record for 666 Warden Ave, San Leandro, CA 94577
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 1 ba · 1,050 sqft · built 1948 |
| Lot Size | 0.115 acres (5,000 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $560,000 (May 2018) |
| Tax Bill | $8,885 (2025) |
| Deeds & Mortgages | May 2018 Sale & Mortgage |
| Flood Zone | Zone X (minimal risk) |
| APN | 77A-655-108 |
| Primary APN | 77A-655-108 |
|---|---|
| Alternative APN |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 1 Bath |
| Total Rooms | 5 Rooms |
| Stories | 1 Story |
| Building Area | 1,050 sqft Living Area |
| Year Built | Built 1948 |
|---|---|
| Effective Year Built | Effective 1948 |
| Architectural Style | L-Shape |
| Construction Type | Wood |
| Lot Area | 5,000 sqft (0.115 acres) |
| Street Address | 666 WARDEN AVE |
|---|---|
| City | SAN LEANDRO |
| State | CA |
| Zip | 94577-1238 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | LOT: 00011 BLK: TR: 0777 |
| Legal Subdivision | 777 SAN LEANDRO |
| Legal Tract | 0777 |
| Legal Lot Number | 11 |
| Jurisdiction | ALAMEDA CA |
| Township / Civil Division | HAYWARD |
| Census Block Group | 1 |
| Census Block | 1000 |
| Census Tract | 432400 |
666 Warden Ave is owned and occupied by two individuals who bought it in May 2018.
Source: Alameda County records, as of August 5, 2026
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 666 WARDEN AVE, SAN LEANDRO, CA 94577-1238 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | May 11, 2018 · Amount on File |
| Deed Sale | May 11, 2018 · Amount on File |
| Prior Sale | Oct 24, 2014 · Amount on File |
| Deed Document Number | 201894499 |
| Prior Transfer Date | May 6, 1999 |
| Prior Transfer Doc | 0000224651 |
| Record Updated | Oct 29, 2026 |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | ALAMEDA CA |
| Recording Date | May 11, 2018 |
| Property Address | 666 WARDEN AVE, SAN LEANDRO, CA 94577-1238 |
| Document Number | 0000094499 |
| Map Reference | MB 22 PG 46-48 |
| Instrument Date | May 8, 2018 |
| Instrument | 2018094499 |
| Transaction Type | Transfer |
| Record Updated | Aug 19, 2021 |
| Title Company | OLD REPUBLIC TITLE COMPANY |
| Amount | Amount on Record |
|---|---|
| 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 |
|---|---|
| Relationship | Community Property |
| Address | 666 WARDEN AVE, SAN LEANDRO, CA 94577-1238 |
| Document Number | 0000094500 |
|---|---|
| Date | May 11, 2018 |
| Instrument | 2018094500 |
| Name | MUFG UNION BANK NA |
|---|---|
| Type | Bank |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 361 Months |
| Due | Jun 1, 2048 |
The 2025 property tax bill for 666 Warden Ave was $8,885.
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 | Assessed Market Value |
|---|---|---|---|
| 2026 | $649,913 (+2%) Land $194,974 Building $454,939 | ||
| 2025 | $8,885.00 | $637,173 Land $191,152 Building $446,021 | |
| 2023 | $8,497.00 | $612,431 Land $183,729 Building $428,702 | $613,710 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 666 Warden Ave in Zone X, an area of minimal flood risk.
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 8 (10% 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.
The area around 666 Warden Ave has no burnable land within ember reach, so its wildfire risk is not rated.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Not rated no burnable land within 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 823 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Sonic Telecom Fiber | 10,000 / 10,000 |
| Xfinity Cable | 2,000 / 250 |
| Unwired Fixed Wireless | 300 / 25 |
| Verizon Fixed Wireless | 300 / 20 |
| Etheric Networks Fixed Wireless | 250 / 100 |
| AT&T DSL · Fiber, Fixed Wireless in parts of the area | 100 / 20 |
May also be available: GeoLinks.
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