Alameda County property record for 33723 4th St, Union City, CA 94587
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 1 ba · 1,104 sqft · built 1915 |
| Lot Size | 0.115 acres (5,000 sqft) |
| Owner | Trust Name on File |
| Tax Bill | $1,263 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 486-9-46-1 |
| Primary APN | 486-9-46-1 |
|---|---|
| Alternative APN |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 1 Bath |
| Total Rooms | 5 Rooms |
| Stories | 1 Story |
| Building Area | 1,104 sqft Living Area |
| Year Built | Built 1915 |
|---|---|
| Effective Year Built | Effective 1930 |
| Architectural Style | Custom Design |
| Construction Type | Wood |
| Lot Area | 5,000 sqft (0.115 acres) |
| Street Address | 33723 4TH ST |
|---|---|
| City | UNION CITY |
| State | CA |
| Zip | 94587-3404 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | LOT: 00001 BLK: 0046 AR: 0486 PAGE: 0009 |
| Legal Subdivision | DECOTO |
| Legal Block | 104 |
| Legal Lot Number | 14 |
| Jurisdiction | ALAMEDA CA |
| Township / Civil Division | FREMONT |
| Census Block Group | 1 |
| Census Block | 1015 |
| Census Tract | 440200 |
33723 4th St is owner-occupied and held in a trust since May 2002.
Source: Alameda County records, as of August 5, 2026
| Owner of Record | Trust Name on File |
|---|---|
| Mailing Address | 33723 4TH ST, UNION CITY, CA 94587-3404 |
| Occupancy | Owner Occupied |
| Owner Type | Company |
| Vesting | Trust |
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 | Name on Deed |
|---|---|
| Last Transfer Date | May 29, 2002 |
| Transfer Doc | 0000288341 |
| Record Updated | Sep 20, 2026 |
The 2025 property tax bill for 33723 4th St was $1,263 with a homeowner's exemption.
Source: Alameda County assessment roll, as of August 5, 2026
| Type | Name |
|---|---|
| State | California |
| County | Alameda County |
| Municipality | Union City |
| Unified School District | New Haven Unified School District (KG - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2026 | $26,650 (-19.22%) Land $8,412 Building $25,238 | ||
| 2025 | $1,263.00 Homeowner's exemption | $32,990 Land $8,247 Building $24,743 | |
| 2023 | $1,790.00 Homeowner's exemption | $31,709 Land $7,927 Building $23,782 | $803,250 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 33723 4th St in Zone X, an area of minimal flood risk.
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.
Wildfire risk around 33723 4th St is moderate, ranking above 47% of the US, with a 0.1% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Moderate above 47% of the US · lower than 72% of California |
|---|---|
| Wildfire Likelihood | 0.1% annual chance |
| Exposure | Indirect 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 | ALAMEDA COUNTY WATER DISTRICT serves 344,000 people · EPA ID CA0110001 |
|---|---|
| Water Source | Surface water |
| Last State Inspection | Nov 2025 |
| 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.
Source: FCC Broadband Data Collection, based on 352 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 |
| RobinsonHSS Fixed Wireless | 1,000 / 1,000 |
| Tekify Fiber & Wireless Fixed Wireless | 800 / 800 |
| Verizon Fixed Wireless | 300 / 20 |
| T-Mobile Fixed Wireless | 100 / 20 |
May also be available: GeoLinks, Sail Internet.
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