Sonoma County property record for 4136 White Alder, Sonoma, CA 95476
| Property Type | Single Family Home |
|---|---|
| Details | 2 bd · 2.5 ba · 4,479 sqft · built 1994 |
| Lot Size | 5.11 acres (223,027 sqft) |
| Owner | Company Name on Record |
| Last Sale | $302,500 (Oct 1990) |
| Tax Bill | $18,844 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 142-280-043-000 |
| Primary APN | 142-280-043-000 |
|---|---|
| Alternative APN |
|
| Bedrooms | 2 Beds |
|---|---|
| Full Baths | 2.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 2 Rooms |
| Stories | 2 Stories |
| Building Area | 4,479 sqft Living Area |
| Gross Area | 5,313 sqft |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1994 |
|---|---|
| Effective Year Built | Effective 1994 |
| Architectural Style | L-Shape |
| Construction Type | Wood |
| Lot Area | 223,027 sqft |
| Garage Type | Attached |
| Garage Area | 834 sqft |
| Parking Spaces | 3 Parking Spaces |
| Old Parcel Number | 142-280-043 |
|---|---|
| Street Address | 4136 WHITE ALDER |
| City | SONOMA |
| State | CA |
| Zip | 95476-6078 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | AR10 |
| Legal Description | 91 FM 142-280-30 CW PT 31 LLA 90-509 & 900092106 |
| Legal Subdivision | TRACT 611 PHASE III THE GEORGE RANCH |
| Legal Block | 1 |
| Jurisdiction | SONOMA CA |
| Township / Civil Division | SONOMA |
| Census Block Group | 1 |
| Census Block | 1009 |
| Census Tract | 150303 |
Source: Sonoma County records, as of September 1, 2026
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | Company Name on Record |
|---|---|
| Mailing Address | 4136 WHITE ALDER, SONOMA, CA 95476-6078 |
| Occupancy | Owner Occupied |
| Owner Type | Company |
| Vesting | Trust |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Oct 24, 1990 · Amount on Record |
| Deed Sale | Oct 24, 1990 · Amount on Record |
| Deed Document Number | 1990105281 |
| Last Transfer Date | Nov 14, 2003 |
| Transfer Doc | 0000252279 |
| Record Updated | Oct 29, 2026 |
Source: Sonoma County assessment roll, as of September 1, 2026
| Type | Name |
|---|---|
| State | California |
| County | Sonoma County |
| Unified School District | Sonoma Valley Unified School District (KG - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $1,669,469 (+2%) Land $572,953 Building $1,096,516 | |
| 2025 | $18,844.00 (+3.82%) Homeowner's exemption | $1,636,735 (+4.04%) Land $561,719 Building $1,075,016 |
| 2023 | $18,150.00 (+1.26%) Homeowner's exemption | $1,573,180 Land $539,907 Building $1,033,273 |
| 2022 | $17,924.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
Source: FEMA National Flood Hazard Layer, effective February 15, 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 10 (0% 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.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | High above 83% of the US · above 63% of California |
|---|---|
| Wildfire Likelihood | 0.7% annual chance |
| Exposure | Direct burnable vegetation |
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 | GEORGE RANCH MUTUAL WATER COMPANY private · serves 148 people · EPA ID CA4900973 |
|---|---|
| Water Source | Groundwater |
| Lead | 3 ppb (2023–2025) action level 15 ppb |
| Water Quality | None last 10 years |
|---|---|
| Treatment and Procedure | Lead service line inventory currently in violation since Oct 2024 |
| Monitoring and Reporting | 1 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 2 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Starlink Satellite | 280 / 30 |
| AT&T DSL | 10 / 1 |
5G (outdoors only) and 4G LTE
Search by:
By searching, you agree to: Terms • Privacy • Disclosures