Alameda County property record for 4331 Cortez Ct, Union City, CA 94587
| Property Type | Townhouse |
|---|---|
| Details | 4 bd · 2.5 ba · 1,430 sqft · built 1972 |
| Lot Size | 0.04 acres (1,722 sqft) |
| Owner | 2 Individual Names on Record |
| Last Sale | $164,500 (Jul 2010) |
| Tax Bill | $6,390 (2025) |
| Deeds & Mortgages | Feb 2018 Line of Credit |
| Flood Zone | Zone X (minimal risk) |
| APN | 483-97-40 |
| Primary APN | 483-97-40 |
|---|---|
| Alternative APN |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 2.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 7 Rooms |
| Stories | 2 Stories |
| Building Area | 1,430 sqft Living Area |
| Year Built | Built 1972 |
|---|---|
| Effective Year Built | Effective 1975 |
| Architectural Style | Custom Design |
| Exterior Material | Block |
| Construction Type | Wood |
| Lot Area | 1,722 sqft (0.04 acres) |
| Parking Spaces | 2 Parking Spaces |
| Heating System | Forced Air with A/C |
|---|---|
| Sewer | Municipal |
| Water Source | Commercial |
| Street Address | 4331 CORTEZ CT |
|---|---|
| City | UNION CITY |
| State | CA |
| Zip | 94587-3806 |
| Property Category | Residential |
| Property Type | Residential > Condominium / Townhouse > Townhouse |
| Legal Description | LOT: 00011 BLK: TR: 3268 |
| Legal Tract | 3268 |
| Legal Lot Number | 11 |
| Jurisdiction | ALAMEDA CA |
| Township / Civil Division | FREMONT |
| Census Block Group | 1 |
| Census Block | 1000 |
| Census Tract | 440304 |
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 | 2 Individual Names on Record |
|---|---|
| Mailing Address | 4331 CORTEZ CT, UNION CITY, CA 94587-3806 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Community Property |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Jul 20, 2010 · Amount on Record |
| Deed Sale | Jul 20, 2010 · Amount on Record |
| Prior Sale | Mar 27, 2008 · Amount on Record |
| Deed Document Number | 2010199040 |
| Prior Transfer Date | Mar 19, 2008 |
| Prior Transfer Doc | 0000104022 |
| Record Updated | Oct 29, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | ALAMEDA CA |
| Property Address | 4331 CORTEZ CT, UNION CITY, CA 94587-3806 |
| Transaction Type | Mortgage |
| Record Updated | Jul 19, 2022 |
| Name | Verified Name |
|---|
| Document Number | 0000036668 |
|---|---|
| Date | Feb 21, 2018 |
| Instrument | 2018036668 |
| Name | CITIBANK NA |
|---|---|
| Type | Bank |
| Address | SIOUX FALLS, SD 57104 |
| Type | Line of Credit |
|---|---|
| Amount | Amount Recorded |
| Rate Type | Adjustable Rate |
|---|---|
| Change Frequency | Monthly |
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 | $448,795 (+2%) Land $134,638 Building $314,157 | ||
| 2025 | $6,390.00 (-0.79%) | $439,998 (+4.04%) Land $131,999 Building $307,999 | |
| 2023 | $6,441.00 | $422,917 Land $126,875 Building $296,042 | $715,680 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
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 |
|---|---|
| Nearest Special Flood Hazard Area | Zone AE, within 500 ft |
| Flood Insurance Requirement | Not required lenders may require it |
| Nearby Flood Claims | 1 (1991) |
| Most Recent Claim | Oct 1991 · other causes |
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 80% of the US · lower than 88% of California |
|---|---|
| Wildfire Likelihood | 0.01% 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 621 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 |
| Tekify Fiber & Wireless Fixed Wireless | 570 / 120 |
| Unwired Fixed Wireless | 300 / 25 |
| Etheric Networks Fixed Wireless | 250 / 100 |
| T-Mobile Fixed Wireless | 100 / 20 |
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