Alameda County property record for 6131 Castillon Dr, Newark, CA 94560
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 2 ba · 1,100 sqft · built 1959 |
| Lot Size | 0.138 acres (6,000 sqft) |
| Owner | Trust Name on File |
| Tax Bill | $1,425 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 92A-616-52 |
| Primary APN | 92A-616-52 |
|---|---|
| Alternative APN |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 5 Rooms |
| Stories | 1 Story |
| Building Area | 1,100 sqft Living Area |
| Year Built | Built 1959 |
|---|---|
| Effective Year Built | Effective 1961 |
| Architectural Style | Custom Design |
| Construction Type | Wood |
| Lot Area | 6,000 sqft (0.138 acres) |
| Street Address | 6131 CASTILLON DR |
|---|---|
| City | NEWARK |
| State | CA |
| Zip | 94560-1718 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | LOT: 00105 BLK: TR: 1985 |
| Legal Tract | 1985 |
| Legal Lot Number | 105 |
| Jurisdiction | ALAMEDA CA |
| Township / Civil Division | FREMONT |
| Census Block Group | 3 |
| Census Block | 3021 |
| Census Tract | 444200 |
6131 Castillon Dr is owner-occupied and held in a trust since October 2008.
Source: Alameda County records, as of August 5, 2026
| Owner of Record | Trust Name on File |
|---|---|
| Mailing Address | 6131 CASTILLON DR, NEWARK, CA 94560-1718 |
| 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 | Oct 1, 2008 |
| Transfer Doc | 0000293117 |
| Record Updated | Sep 20, 2026 |
The 2025 property tax bill for 6131 Castillon Dr was $1,425 with a homeowner's exemption.
Source: Alameda County assessment roll, as of August 5, 2026
| Type | Name |
|---|---|
| State | California |
| County | Alameda County |
| Municipality | Newark City |
| Unified School District | Newark Unified School District (KG - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2026 | $57,270 (-9.11%) Land $21,006 Building $43,264 | ||
| 2025 | $1,425.00 Homeowner's exemption | $63,010 Land $20,595 Building $42,415 | |
| 2023 | $1,326.00 Homeowner's exemption | $60,564 Land $19,795 Building $40,769 | $934,470 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 6131 Castillon Dr 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.
Wildfire risk around 6131 Castillon Dr 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 99.8% of the US · lower than 99.8% 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 | 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 438 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 | 600 / 130 |
| Verizon Fixed Wireless | 300 / 20 |
| Etheric Networks Fixed Wireless | 250 / 100 |
| T-Mobile Fixed Wireless | 100 / 20 |
| AT&T Fixed Wireless · DSL · Fiber in parts of the area | 100 / 20 |
May also be available: GeoLinks, Sail Internet.
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