Alameda County property record for 520 D St, Union City, CA 94587
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 2 ba · 1,195 sqft · built 1930 |
| Lot Size | 0.115 acres (5,000 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $320,000 (Sep 2003) |
| Tax Bill | $9,714 (2025) |
| Deeds & Mortgages | Nov 2021 Mortgage |
| Flood Zone | Zone X (minimal risk) |
| APN | 486-12-16 |
| Primary APN | 486-12-16 |
|---|---|
| Alternative APN |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 7 Rooms |
| Stories | 1 Story |
| Building Area | 1,195 sqft Living Area |
| Year Built | Built 1930 |
|---|---|
| Effective Year Built | Effective 1930 |
| Architectural Style | Custom Design |
| Construction Type | Wood |
| Lot Area | 5,000 sqft (0.115 acres) |
| Parking Spaces | 1 Parking Space |
| Street Address | 520 D ST |
|---|---|
| City | UNION CITY |
| State | CA |
| Zip | 94587 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | LOT: 00016 BLK: AR: 0486 PAGE: 0012 |
| Legal Subdivision | DECOTO |
| Legal Block | 42 |
| Legal Lot Number | 1 |
| Jurisdiction | ALAMEDA CA |
| Township / Civil Division | FREMONT |
| Census Block Group | 4 |
| Census Block | 4021 |
| Census Tract | 440200 |
520 D St is owned and occupied by two individuals who bought it in September 2003.
Source: Alameda County records, as of September 28, 2026
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 33402 6TH ST, UNION CITY, CA 94587-2423 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Joint Tenants |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Sep 2, 2003 · Amount on File |
| Deed Sale | Sep 2, 2003 · Amount on File |
| Prior Sale | Dec 28, 2001 · Amount on File |
| Deed Document Number | 2003518159 |
| Record Updated | Oct 29, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | ALAMEDA CA |
| Property Address | 33402 6TH ST, UNION CITY, CA 94587-2423 |
| Transaction Type | Mortgage |
| Record Updated | Dec 17, 2021 |
| Title Company | STATES TITLE INC |
| Name | Verified Name |
|---|---|
| Address | 33402 6TH ST, UNION CITY, CA 94587-2423 |
| Document Number | 0000378879 |
|---|---|
| Date | Nov 23, 2021 |
| Instrument | 2021378879 |
| Name | JPMORGAN CHASE BANK NA |
|---|---|
| Type | Bank |
| Address | COLUMBUS, OH 43240 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 240 Months |
| Due | Nov 1, 2041 |
The 2025 property tax bill for 520 D St was $9,714 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 | $652,782 (+0.92%) Land $139,213 Building $520,569 | ||
| 2025 | $9,714.00 Homeowner's exemption | $646,847 Land $136,484 Building $510,363 | |
| 2023 | $9,265.00 Homeowner's exemption | $581,082 Land $131,184 Building $449,898 | $621,090 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 520 D St in Zone X, an area of minimal flood risk, though there have been 1 flood claim nearby since 1998.
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 |
| Nearby Flood Claims | 1 (1998) |
| Claims Outside the SFHA | 1 of 1 |
| Most Recent Claim | Feb 1998 · Severe Winter Storms And Flooding |
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.
Wildfire risk around 520 D St is moderate, ranking above 53% 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 53% of the US · lower than 68% 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 583 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 |
| Tekify Fiber & Wireless Fixed Wireless | 1,000 / 1,000 |
| RobinsonHSS Fixed Wireless | 1,000 / 1,000 |
May also be available: GeoLinks, T-Mobile, Verizon.
Search by:
By searching, you agree to: Terms • Privacy • Disclosures