Alameda County property record for 4154 Asimuth Cir, Union City, CA 94587
| Property Type | Townhouse |
|---|---|
| Details | 4 bd · 2.5 ba · 1,584 sqft · built 1974 |
| Lot Size | 0.04 acres (1,725 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $141,000 (Aug 2021) |
| Tax Bill | $8,922 (2025) |
| Deeds & Mortgages | May 2022 Line of Credit Aug 2021 Sale & Mortgage |
| Flood Zone | Zone X (minimal risk) |
| APN | 483-103-192 |
| Primary APN | 483-103-192 |
|---|---|
| Alternative APN |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 2.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 7 Rooms |
| Stories | 2 Stories |
| Building Area | 1,584 sqft Living Area |
| Year Built | Built 1974 |
|---|---|
| Effective Year Built | Effective 1976 |
| Architectural Style | Custom Design |
| Exterior Material | Stucco |
| Construction Type | Wood |
| Roof Material | Composition Shingle |
| Lot Area | 1,725 sqft (0.04 acres) |
| Parking Spaces | 2 Parking Spaces |
| Heating System | Forced Air with A/C |
|---|---|
| Heating Fuel | Gas |
| Sewer | Municipal |
| Water Source | Commercial |
| Street Address | 4154 ASIMUTH CIR |
|---|---|
| City | UNION CITY |
| State | CA |
| Zip | 94587-4024 |
| Property Category | Residential |
| Property Type | Residential > Condominium / Townhouse > Townhouse |
| Local Zoning Code | R1 |
| Legal Description | LOT: 00054 BLK: TR: 3218 |
| Legal Tract | 3218 |
| Legal Lot Number | 54 |
| Jurisdiction | ALAMEDA CA |
| Township / Civil Division | FREMONT |
| Census Block Group | 1 |
| Census Block | 1011 |
| Census Tract | 440306 |
4154 Asimuth Cir, a townhouse, is owned and occupied by two individuals who bought it in August 2021.
Source: Alameda County records, as of August 5, 2026
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 4154 ASIMUTH CIR, UNION CITY, CA 94587-4024 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Community Property |
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Date | Document |
|---|---|
| May 12, 2022 | Deed of Trust, Mortgage · Line of Credit FREMONT BANK |
| Aug 25, 2021 | Grant Deed, Transfer · Conventional Mortgage ROCKET MORTGAGE LLC |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Aug 25, 2021 · Amount on File |
| Deed Sale | Aug 25, 2021 · Amount on File |
| Prior Sale | Jul 24, 2015 · Amount on File |
| Deed Document Number | 2021289577 |
| Prior Transfer Date | Aug 19, 2021 |
| Prior Transfer Doc | 0000289577 |
| Record Updated | Oct 29, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | ALAMEDA CA |
| Property Address | 4154 ASIMUTH CIR, UNION CITY, CA 94587-4024 |
| Transaction Type | Mortgage |
| Record Updated | Jun 14, 2022 |
| Name | Verified Name |
|---|---|
| Address | 4154 ASIMUTH CIR, UNION CITY, CA 94587-4024 |
| Document Number | 0000093504 |
|---|---|
| Date | May 12, 2022 |
| Instrument | 2022093504 |
| Name | FREMONT BANK |
|---|---|
| Type | Bank |
| Address | LIVERMORE, CA 94551 |
| Type | Line of Credit |
|---|---|
| Amount | Amount on Record |
| Term | 360 Months |
| Due | May 20, 2052 |
| Rate Type | Adjustable Rate |
|---|---|
| Change Frequency | Monthly |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | ALAMEDA CA |
| Recording Date | Aug 25, 2021 |
| Property Address | 4154 ASIMUTH CIR, UNION CITY, CA 94587-4024 |
| Document Number | 0000289577 |
| Map Reference | MB 78 PG 51-54 |
| Instrument Date | Aug 19, 2021 |
| Instrument | 2021289577 |
| Transaction Type | Transfer |
| Record Updated | Sep 15, 2021 |
| Title Company | FIRSTAMERICAN TITLE COMPANY, FIRST AMERICAN TITLE COMPANY |
| Amount | Amount on Record |
|---|---|
| Tax | $0.00 |
| Amount Accuracy | Calculated from Transfer Tax |
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Community Property with Right of Survivorship |
| Address | 4154 ASIMUTH CIR, UNION CITY, CA 94587-4024 |
| Document Number | 0000289578 |
|---|---|
| Date | Aug 25, 2021 |
| Instrument | 2021289578 |
| Name | ROCKET MORTGAGE LLC |
|---|---|
| Type | Mortgage Company |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 361 Months |
| Due | Sep 1, 2051 |
The 2025 property tax bill for 4154 Asimuth Cir was $8,922 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 | $653,610 (+0.92%) Land $198,183 Building $462,427 | ||
| 2025 | $8,922.00 Homeowner's exemption | $647,658 Land $194,297 Building $453,361 | |
| 2023 | $8,815.00 Homeowner's exemption | $622,514 Land $186,754 Building $435,760 | $727,110 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 4154 Asimuth Cir 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 |
| Nearby Flood Policies | 2 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 4154 Asimuth Cir 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 | 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 859 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Xfinity Cable | 2,000 / 250 |
| RobinsonHSS Fixed Wireless | 1,000 / 1,000 |
| Tekify Fiber & Wireless Fixed Wireless | 580 / 125 |
| Etheric Networks Fixed Wireless | 250 / 100 |
| T-Mobile Fixed Wireless | 100 / 20 |
| AT&T Fixed Wireless · DSL | 100 / 20 |
May also be available: GeoLinks, Sail Internet, Verizon.
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