Sonoma County property record for 18609 Riverside Dr, Sonoma, CA 95476
| Property Type | Single Family Home |
|---|---|
| Details | 1 bd · 1 ba · 476 sqft · built 1925 |
| Lot Size | 0.041 acres (1,800 sqft) |
| Owner | Company Name on Record |
| Tax Bill | $2,432 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 052-281-022-000 |
| Primary APN | 052-281-022-000 |
|---|---|
| Alternative APN |
|
| Bedrooms | 1 Bed |
|---|---|
| Full Baths | 1 Bath |
| Total Rooms | 1 Room |
| Stories | 1 Story |
| Building Area | 476 sqft Living Area |
| 1st Floor Area | 476 sqft |
| Year Built | Built 1925 |
|---|---|
| Effective Year Built | Effective 2004 |
| Architectural Style | Custom Design |
| Construction Type | Wood |
| Lot Area | 1,800 sqft (0.041 acres) |
| Cooling System | None |
|---|
| Old Parcel Number | 052-281-022 |
|---|---|
| Street Address | 18609 RIVERSIDE DR |
| City | SONOMA |
| State | CA |
| Zip | 95476-4510 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R15UA |
| Legal Description | BLK 1 LOT 2 |
| Legal Subdivision | RIVERSIDE ADDITION TO SONOMA VISTA TRACT |
| Legal Block | 2 |
| Legal Lot Number | 2 |
| Jurisdiction | SONOMA CA |
| Township / Civil Division | SONOMA |
| Census Block Group | 2 |
| Census Block | 2000 |
| Census Tract | 150304 |
Source: Sonoma County records, as of September 1, 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 | Company Name on Record |
|---|---|
| Mailing Address | PO BOX 1808, GLEN ELLEN, CA 95442-1808 |
| Owner Type | Company |
| Vesting | Trust |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Jul 2, 1993 |
| Deed Sale | Jul 2, 1993 |
| Prior Sale | Jul 31, 1989 · Amount on Record |
| Deed Document Number | 199382475 |
| Last Transfer Date | Nov 20, 2012 |
| Transfer Doc | 0000134700 |
| 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 | $64,018 (+2%) Land $46,968 Building $17,050 | |
| 2025 | $2,432.00 (+1%) | $62,764 (+4.04%) Land $46,048 Building $16,716 |
| 2023 | $2,211.00 (+6.35%) | $60,329 Land $44,261 Building $16,068 |
| 2022 | $2,079.00 |
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 |
|---|---|
| Nearest Special Flood Hazard Area | Zone AE, within 100 ft |
| Flood Insurance Requirement | Not required lenders may require it |
| Community Rating System | Class 10 (0% premium discount) |
| Nearby Flood Policies | 8 in force |
| Nearby Flood Claims | 2 (2005–2017) |
| Most Recent Claim | Feb 2017 · Severe Winter Storms, Flooding, And Mudslides |
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 | Low lower than 80% of the US · lower than 88% of California |
|---|---|
| Wildfire Likelihood | 0.02% 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 | VALLEY OF THE MOON WATER DISTRICT serves 23,140 people · EPA ID CA4910013 |
|---|---|
| Water Source | Groundwater |
| Last State Inspection | Sep 2022 |
| Lead | Under 1 ppb (2024–2026) 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 625 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Xfinity Cable | 2,000 / 250 |
| Verizon Fixed Wireless | 300 / 20 |
| T-Mobile Fixed Wireless | 100 / 20 |
| AT&T DSL · Fiber in parts of the area | 100 / 20 |
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