Alameda County property record for 503 B St, Hayward, CA 94541
| Property Type | Quadplex |
|---|---|
| Details | 8 bd · 5 ba · 3,593 sqft · built 1954 |
| Lot Size | 0.298 acres (13,000 sqft) |
| Owner | Company Name on Record |
| Last Sale | $1,350,000 (Sep 2017) |
| Tax Bill | $18,704 (2025) |
| Deeds & Mortgages | Sep 2017 Sale |
| Flood Zone | Zone X (moderate risk) |
| APN | 431-40-1 |
| Primary APN | 431-40-1 |
|---|---|
| Alternative APN |
|
| Bedrooms | 8 Beds |
|---|---|
| Full Baths | 5 Baths |
| Total Rooms | 21 Rooms |
| Units | 4 Units |
| Stories | 2 Stories |
| Building Area | 3,593 sqft Living Area |
| Year Built | Built 1954 |
|---|---|
| Effective Year Built | Effective 1970 |
| Construction Type | Wood |
| Lot Area | 13,000 sqft (0.298 acres) |
| Parking Spaces | 2 Parking Spaces |
| Street Address | 503 B ST |
|---|---|
| City | HAYWARD |
| State | CA |
| Zip | 94541-5003 |
| Property Category | Residential |
| Property Type | Residential > Multi-Unit > Quadplex |
| Legal Description | LOT: 00001 BLK: AR: 0431 PAGE: 0040 |
| Legal Subdivision | MEEK MAP 01 |
| Legal Block | 112 |
| Legal Lot Number | 13 |
| Jurisdiction | ALAMEDA CA |
| Township / Civil Division | HAYWARD |
| Census Block Group | 1 |
| Census Block | 1000 |
| Census Tract | 436302 |
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 | 1534 PLAZA LN, BURLINGAME, CA 94010-3204 |
| Owner Type | Company |
| Vesting | Trust |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Sep 1, 2017 · Amount on Record |
| Deed Sale | Sep 1, 2017 · Amount on Record |
| Deed Document Number | 2017193483 |
| Record Updated | Sep 20, 2026 |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | ALAMEDA CA |
| Recording Date | Sep 1, 2017 |
| Property Address | 503 B ST, HAYWARD, CA 94541-5003 |
| Document Number | 0000193483 |
| Instrument Date | Aug 28, 2017 |
| Instrument | 193483 |
| Transaction Type | Transfer |
| Record Updated | Oct 9, 2017 |
| Title Company | FIRST AMERICAN TITLE |
| Amount | Amount Recorded |
|---|---|
| Tax | $1,485.00 |
| Amount Accuracy | Full Value |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Revocable Trust |
| Address | 1157 POST ST SAN FRANCISCO CA 941095504, SAN FRANCISCO, CA 94109-5504 |
Source: Alameda County assessment roll, as of August 5, 2026
| Type | Name |
|---|---|
| State | California |
| County | Alameda County |
| Municipality | Hayward City |
| Unified School District | Hayward Unified School District (KG - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $1,566,755 (+2%) Land $487,435 Building $1,079,320 | |
| 2025 | $18,704.00 (+2.54%) | $1,536,043 (+4.04%) Land $477,880 Building $1,058,163 |
| 2023 | $18,241.00 | $1,476,399 Land $459,324 Building $1,017,075 |
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 moderate risk |
|---|---|
| 500-Year Floodplain | Yes 0.2% annual chance |
| 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 | 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 | CITY OF HAYWARD serves 162,954 people · EPA ID CA0110006 |
|---|---|
| Water Source | Purchased surface water from SAN FRANCISCO REGIONAL WATER SYSTEM |
| Last State Inspection | Mar 2025 |
| Lead | Under 1 ppb (2023–2025) 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.
Source: FCC Broadband Data Collection, based on 792 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| AT&T Fiber · DSL in parts of the area | 5,000 / 5,000 |
| Xfinity Cable | 2,000 / 250 |
| RobinsonHSS Fixed Wireless | 1,000 / 1,000 |
| Unwired Fixed Wireless | 300 / 25 |
| Verizon Fixed Wireless | 300 / 20 |
| Etheric Networks Fixed Wireless | 250 / 100 |
May also be available: GeoLinks, T-Mobile, Tekify Fiber & Wireless.
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