Alameda County property record for 4148 Casterson Ct, Pleasanton, CA 94566
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 2 ba · 2,478 sqft · built 1992 |
| Lot Size | 0.416 acres (18,119 sqft) |
| Owner | Trust Name on File |
| Last Sale | $1,365,000 (Mar 2015) |
| Tax Bill | $19,199 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 950-3-55 |
| Primary APN | 950-3-55 |
|---|---|
| Alternative APN |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 8 Rooms |
| Stories | 1 Story |
| Building Area | 2,478 sqft Living Area |
| Year Built | Built 1992 |
|---|---|
| Effective Year Built | Effective 1996 |
| Architectural Style | L-Shape |
| Construction Type | Wood |
| Lot Area | 18,119 sqft (0.416 acres) |
| Parking Spaces | 1 Parking Space |
| Street Address | 4148 CASTERSON CT |
|---|---|
| City | PLEASANTON |
| State | CA |
| Zip | 94566-7534 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | LOT: 00006 BLK: TR: 5875 |
| Legal Subdivision | KOTTINGER RANCH |
| Legal Tract | 5875 |
| Legal Lot Number | 6 |
| Jurisdiction | ALAMEDA CA |
| Township / Civil Division | LIVERMORE-PLEASANTON |
| Census Block Group | 1 |
| Census Block | 1003 |
| Census Tract | 450701 |
4148 Casterson Ct is owner-occupied and held in a trust since April 2015.
Source: Alameda County records, as of August 5, 2026
| Owner of Record | Trust Name on File |
|---|---|
| Mailing Address | 4148 CASTERSON CT, PLEASANTON, CA 94566-7534 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Trust, Personal 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 Sale | Mar 12, 2015 · Amount on File |
| Deed Sale | Mar 12, 2015 · Amount on File |
| Prior Sale | Jan 3, 1996 · Amount on File |
| Deed Document Number | 201567599 |
| Last Transfer Date | Apr 17, 2015 |
| Transfer Doc | 0000123720 |
| Record Updated | Oct 29, 2026 |
The 2025 property tax bill for 4148 Casterson Ct was $19,199 with a homeowner's exemption.
Source: Alameda County assessment roll, as of August 5, 2026
| Type | Name |
|---|---|
| State | California |
| County | Alameda County |
| Municipality | Pleasanton City |
| Unified School District | Pleasanton Unified School District (KG - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2026 | $1,666,271 (+1.57%) Land $501,981 Building $1,171,290 | ||
| 2025 | $19,199.00 Homeowner's exemption | $1,640,470 Land $492,141 Building $1,148,329 | |
| 2023 | $18,601.00 Homeowner's exemption | $1,576,778 Land $473,033 Building $1,103,745 | $2,272,320 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 4148 Casterson Ct in Zone X, an area of minimal flood risk.
Source: FEMA National Flood Hazard Layer, effective May 25, 2026
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
Values are read at the parcel center point; lenders make the official flood determination.
Wildfire risk around 4148 Casterson Ct is moderate, ranking above 64% of the US, with a 0.2% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Moderate above 64% of the US · lower than 60% of California |
|---|---|
| Wildfire Likelihood | 0.2% annual chance |
| Exposure | Indirect within ember reach |
| Adjoins Burnable Land | Yes |
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 PLEASANTON serves 76,689 people · EPA ID CA0110008 |
|---|---|
| Water Source | Purchased surface water from ZONE 7 WATER AGENCY |
| Last State Inspection | May 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 228 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Xfinity Cable | 2,000 / 250 |
| Unwired Fixed Wireless | 300 / 25 |
| Etheric Networks Fixed Wireless | 250 / 100 |
| AT&T DSL · Fiber in parts of the area | 100 / 20 |
May also be available: Verizon.
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