Alameda County property record for 4166 Sonia St, Livermore, CA 94550
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 3 ba · 2,770 sqft · built 2006 |
| Lot Size | 0.237 acres (10,334 sqft) |
| Owner | Trust Name on File |
| Last Sale | $755,000 (Nov 2008) |
| Tax Bill | $13,975 (2025) |
| Deeds & Mortgages | May 2026 Line of Credit |
| Flood Zone | Zone X (minimal risk) |
| APN | 99-1377-32-3 |
| Primary APN | 99-1377-32-3 |
|---|---|
| Alternative APNs |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 3 Baths |
| Total Rooms | 10 Rooms |
| Stories | 1 Story |
| Building Area | 2,770 sqft Living Area |
| Year Built | Built 2006 |
|---|---|
| Effective Year Built | Effective 2006 |
| Architectural Style | H-Shape |
| Construction Type | Wood |
| Lot Area | 10,334 sqft (0.237 acres) |
| Parking Spaces | 3 Parking Spaces |
| Street Address | 4166 SONIA ST |
|---|---|
| City | LIVERMORE |
| State | CA |
| Zip | 94550-8031 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | LOT: 00046 BLK: TR: 7421 |
| Legal Subdivision | TRACT 7421 |
| Legal Tract | 7421 |
| Legal Lot Number | 46,47 |
| Jurisdiction | ALAMEDA CA |
| Township / Civil Division | LIVERMORE-PLEASANTON |
| Census Block Group | 1 |
| Census Block | 1007 |
| Census Tract | 451503 |
4166 Sonia St is owner-occupied and held in a trust since August 2016.
Source: Alameda County records, as of June 8, 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 | Trust Name on File |
|---|---|
| Mailing Address | 4166 SONIA ST, LIVERMORE, CA 94550-8031 |
| Occupancy | Owner Occupied |
| Owner Type | Company |
| Vesting | Trust |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Nov 26, 2008 · Amount on File |
| Deed Sale | Nov 26, 2008 · Amount on File |
| Deed Document Number | 2008338972 |
| Last Transfer Date | Aug 23, 2016 |
| Transfer Doc | 0000225727 |
| Record Updated | Sep 20, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | ALAMEDA CA |
| Recording Date | May 4, 2026 |
| Property Address | 4166 SONIA ST, LIVERMORE, CA 94550-8031 |
| Document Number | 0000058292 |
| Instrument Date | Apr 24, 2026 |
| Instrument | 202658292 |
| Transaction Type | Mortgage |
| Record Updated | Jul 12, 2026 |
| Title Company | NONE LISTED ON DOCUMENT |
| Name | Verified Name |
|---|---|
| Relationship | Life Tenant, 269 |
| Address | 4166 SONIA ST, LIVERMORE, CA 94550-8031 |
| Document Number | 0000058292, |
|---|---|
| Date | May 4, 2026 |
| Instrument | 202658292 |
| Name | NAVY FEDERAL CREDIT UNION |
|---|
| Type | Line of Credit |
|---|---|
| Amount | Amount on Record |
| Term | 480 Months |
| Due | May 1, 2066 |
| Rate | 6.38% |
|---|---|
| Max Rate | -1% |
The 2025 property tax bill for 4166 Sonia St was $13,975 with a homeowner's exemption.
Source: Alameda County assessment roll, as of June 20, 2025
| Type | Name |
|---|---|
| State | California |
| County | Alameda County |
| Municipality | Livermore City |
| Unified School District | Livermore Valley Joint Unified School District (KG - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2025 | $13,975.00 Homeowner's exemption | $956,134 Land $296,114 Building $667,020 | |
| 2023 | $13,427.00 Homeowner's exemption | $925,747 Land $284,620 Building $641,127 | $1,523,520 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 4166 Sonia St 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 |
| Community Rating System | Class 7 (15% premium discount) |
| Nearby Flood Policies | 1 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.
Wildfire risk around 4166 Sonia St is low, with less than a 0.01% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Low lower than 98% of the US · lower than 98.4% of California |
|---|---|
| Wildfire Likelihood | Under 0.01% annual chance |
| Exposure | None beyond 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 LIVERMORE serves 38,892 people · EPA ID CA0110011 |
|---|---|
| Water Source | Purchased surface water from ZONE 7 WATER AGENCY |
| Last State Inspection | Sep 2024 |
| 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 681 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| AT&T Fiber · DSL · Fixed Wireless in parts of the area | 5,000 / 5,000 |
| Xfinity Cable | 2,000 / 250 |
| Unwired Fixed Wireless | 300 / 25 |
| Verizon Fixed Wireless | 300 / 20 |
| T-Mobile Fixed Wireless | 100 / 20 |
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