Sonoma County property record for 18345 Riverside Dr, Sonoma, CA 95476
| Property Type | Apartments (5+ Units) |
|---|---|
| Details | 8 bd · 7 ba · 3,733 sqft |
| Lot Size | 1.02 acres (44,866 sqft) |
| Owner | Individual Name on File |
| Last Sale | $240,000 (Jun 1998) |
| Tax Bill | $12,838 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 052-231-004-000 |
| Primary APN | 052-231-004-000 |
|---|---|
| Alternative APN |
|
| Bedrooms | 8 Beds |
|---|---|
| Full Baths | 7 Baths |
| Total Rooms | 15 Rooms |
| Units | 7 Units |
| Building Area | 3,733 sqft Living Area |
| Effective Year Built | Effective 1920 |
|---|---|
| Construction Type | Wood |
| Lot Area | 44,866 sqft |
| Cooling System | None |
|---|
| Old Parcel Number | 052-231-004 |
|---|---|
| Street Address | 18345 RIVERSIDE DR |
| City | SONOMA |
| State | CA |
| Zip | 95476-4278 |
| Property Category | Residential |
| Property Type | Residential > Multi-Unit > Apartments (5+ Units) |
| Local Zoning Code | R15UA |
| Legal Description | CREEK FRONT ADDITN SONOMA VISTA TRACT LOTS 27 & 28 |
| Legal Subdivision | SONOMA VISTA |
| Legal Block | 2 |
| Legal Lot Number | 27,28 |
| Jurisdiction | SONOMA CA |
| Township / Civil Division | SONOMA |
| Census Block Group | 2 |
| Census Block | 2000 |
| Census Tract | 150304 |
18345 Riverside Dr, a residential property, is owned and occupied by an individual who bought it in June 1998.
Source: Sonoma County records, as of September 1, 2026
| Owner of Record | Individual Name on File |
|---|---|
| Mailing Address | PO BOX 132, SAUSALITO, CA 94966-0132 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
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 | Jun 16, 1998 · Amount on File |
| Deed Sale | Jun 16, 1998 · Amount on File |
| Prior Sale | Sep 10, 1997 · Amount on File |
| Deed Document Number | 199866750 |
| Prior Transfer Date | Aug 29, 1997 |
| Prior Transfer Doc | 0000079831 |
| Record Updated | Oct 29, 2026 |
The 2025 property tax bill for 18345 Riverside Dr was $12,838 with a homeowner's exemption.
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 | $390,864 (+2%) Land $285,010 Building $105,854 | |
| 2025 | $12,838.00 Homeowner's exemption | $383,201 Land $279,422 Building $103,779 |
| 2023 | $11,200.00 (+4.51%) Homeowner's exemption | $368,323 Land $268,573 Building $99,750 |
| 2022 | $10,717.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 18345 Riverside Dr in Zone X, an area of minimal flood risk, within 100 ft of a high-risk flood zone.
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.
Wildfire risk around 18345 Riverside Dr is low, with 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 80% of the US · lower than 88% of California |
|---|---|
| Wildfire Likelihood | 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 | 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 711 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Xfinity Cable | 2,000 / 250 |
| T-Mobile Fixed Wireless | 100 / 20 |
| AT&T DSL · Fiber, Fixed Wireless in parts of the area | 100 / 20 |
May also be available: Verizon.
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