Sonoma County property record for 18800 Riverside Dr, Sonoma, CA 95476
| Property Type | Single Family Home |
|---|---|
| Details | 5 bd · 3 ba · 2,277 sqft · built 1949 |
| Lot Size | 0.558 acres (24,310 sqft) |
| Owner | Trust Name on File |
| Last Sale | $230,000 (Jan 1999) |
| Tax Bill | $8,605 (2025) |
| Deeds & Mortgages | Oct 2025 Line of Credit May 2021 Transfer |
| Flood Zone | Zone X (minimal risk) |
| APN | 052-700-028-000 |
| Primary APN | 052-700-028-000 |
|---|---|
| Alternative APN |
|
| Bedrooms | 5 Beds |
|---|---|
| Full Baths | 3 Baths |
| Total Rooms | 5 Rooms |
| Stories | 1 Story |
| Building Area | 2,277 sqft Living Area |
| 1st Floor Area | 2,277 sqft |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1949 |
|---|---|
| Effective Year Built | Effective 1985 |
| Lot Area | 24,310 sqft (0.558 acres) |
| Garage Area | 400 sqft |
| Porch | Porch |
| Cooling System | HVAC |
|---|---|
| Heating System | Central |
| Old Parcel Number | 052-700-028 |
|---|---|
| Street Address | 18800 RIVERSIDE DR |
| City | SONOMA |
| State | CA |
| Zip | 95476-4512 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R13UA |
| Legal Description | 76 FORM 52-272-52 AP NO CHG MAP DEPT |
| Legal Subdivision | EL VERANO IMPROV ASSN |
| Legal Block | 3 |
| Legal Lot Number | 19,20 |
| Jurisdiction | SONOMA CA |
| Township / Civil Division | SONOMA |
| Census Block Group | 3 |
| Census Block | 3009 |
| Census Tract | 150304 |
18800 Riverside Dr is held in a trust since January 1999.
Source: Sonoma County records, as of September 1, 2026
| Owner of Record | Trust Name on File |
|---|---|
| Mailing Address | 18800 RIVERSIDE DR, SONOMA, CA 95476-4512 |
| 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.
| Date | Document |
|---|---|
| Oct 15, 2025 | Deed of Trust, Mortgage · Line of Credit REDWOOD CU |
| May 7, 2021 | Intrafamily Transfer, Transfer |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Jan 26, 1999 · Amount on File |
| Deed Sale | Jan 26, 1999 · Amount on File |
| Deed Document Number | 199910412 |
| Prior Transfer Date | Jan 21, 1999 |
| Prior Transfer Doc | 0000010413 |
| Record Updated | Oct 29, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | SONOMA CA |
| Property Address | 18800 RIVERSIDE DR, SONOMA, CA 95476-4512 |
| Transaction Type | Mortgage |
| Record Updated | Oct 22, 2025 |
| Title Company | FIDELITY NATIONAL TITLE, FIDELITY NATL TITLE COMPANY |
| Name | Verified Name |
|---|---|
| Address | 18800 RIVERSIDE DR, SONOMA, CA 95476-4512 |
| Document Number | 0000049577 |
|---|---|
| Date | Oct 15, 2025 |
| Instrument | 2025049577 |
| Name | REDWOOD CU |
|---|---|
| Type | Credit Union |
| Address | SANTA ROSA, CA 95403 |
| Type | Line of Credit |
|---|---|
| Amount | Amount on Record |
| Term | 300 Months |
| Due | Oct 15, 2050 |
| Rate Type | Adjustable Rate |
|---|---|
| Change Frequency | Monthly |
| Document Type | Intrafamily Transfer |
|---|---|
| Jurisdiction | SONOMA CA |
| Recording Date | May 7, 2021 |
| Property Address | 18800 RIVERSIDE DR, SONOMA, CA 95476-4512 |
| Document Number | 0000056554 |
| Map Reference | MB 31 PG 21 |
| Instrument Date | Apr 15, 2021 |
| Instrument | 2021056554 |
| Transaction Type | Transfer |
| Record Updated | Jun 7, 2023 |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | Transfer Tax Exempt |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Address | 18800 RIVERSIDE DR, SONOMA, CA 95476-4512 |
The 2025 property tax bill for 18800 Riverside Dr was $8,605.
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 | $552,759 (+2%) Land $191,880 Building $360,879 | |
| 2025 | $8,605.00 | $541,921 Land $188,118 Building $353,803 |
| 2023 | $8,363.00 (-1.55%) | $520,879 Land $180,814 Building $340,065 |
| 2022 | $8,495.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 18800 Riverside Dr in Zone X, an area of minimal flood risk, within 500 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 500 ft |
| Flood Insurance Requirement | Not required lenders may require it |
| Community Rating System | Class 10 (0% premium discount) |
| 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 18800 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 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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