Sonoma County property record for 20290 Alder Rd, Monte Rio, CA 95462
| Property Type | Single Family Home |
|---|---|
| Details | 2 bd · 1 ba · 672 sqft · built 1943 |
| Lot Size | 0.157 acres (6,818 sqft) |
| Owner | 2 Individual Names on Record |
| Last Sale | $282,000 (Sep 2003) |
| Tax Bill | $5,096 (2025) |
| Flood Zone | Zone AE (high risk) |
| APN | 095-232-010-000 |
| Primary APN | 095-232-010-000 |
|---|---|
| Alternative APN |
|
| Bedrooms | 2 Beds |
|---|---|
| Full Baths | 1 Bath |
| Total Rooms | 2 Rooms |
| Stories | 1 Story |
| Building Area | 672 sqft Living Area |
| 1st Floor Area | 672 sqft |
| Year Built | Built 1943 |
|---|---|
| Effective Year Built | Effective 1943 |
| Architectural Style | Custom Design |
| Construction Type | Wood |
| Lot Area | 6,818 sqft (0.157 acres) |
| Cooling System | None |
|---|
| Old Parcel Number | 095-232-010 |
|---|---|
| Street Address | 20290 ALDER RD |
| City | MONTE RIO |
| State | CA |
| Zip | 95462-9787 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | RR1 |
| Legal Description | UNINCORP COUNTY CA |
| Legal Subdivision | MAP SUB EAST MONTE RIO ADDITION #1 |
| Legal Block | 3 |
| Jurisdiction | SONOMA CA |
| Township / Civil Division | RUSSIAN RIVER-SONOMA COAST |
| Census Block Group | 3 |
| Census Block | 3007 |
| Census Tract | 153708 |
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 | 2 Individual Names on Record |
|---|---|
| Mailing Address | 20290 ALDER RD, MONTE RIO, CA 95462-9787 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Joint Tenants |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Sep 4, 2003 · Amount on Record |
| Deed Sale | Sep 4, 2003 · Amount on Record |
| Prior Sale | Mar 2, 2001 · Amount on Record |
| Deed Document Number | 2003186396 |
| Last Transfer Date | Jun 16, 2016 |
| Transfer Doc | 0000054163 |
| Record Updated | Oct 29, 2026 |
Source: Sonoma County assessment roll, as of September 1, 2026
| Type | Name |
|---|---|
| State | California |
| County | Sonoma County |
| Secondary School District | West Sonoma County Union High School District (09 - 12) |
| Elementary School District | Monte Rio Union Elementary School District (KG - 08) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $408,946 (+2%) Land $145,014 Building $263,932 | |
| 2025 | $5,096.00 (+4.21%) | $400,928 (+4.04%) Land $142,171 Building $258,757 |
| 2023 | $4,890.00 (+2.02%) | $385,361 Land $136,651 Building $248,710 |
| 2022 | $4,793.00 |
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 AE high risk |
|---|---|
| 100-Year Floodplain | Yes 1% annual chance |
| Floodway | Yes |
| Base Flood Elevation | Varies along the reach; see FIRM |
| Flood Insurance Requirement | Required federally backed loans |
| Flood Insurance Cost | Premium on Record median of 64 policies |
| Community Rating System | Class 10 (0% premium discount) |
| Nearby Flood Policies | 64 in force |
| Nearby Flood Claims | 47 (1995–2025) |
| Most Recent Claim | Feb 2025 · river or lake flooding |
| Claims by Event |
|
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 | Moderate above 47% of the US · lower than 72% of California |
|---|---|
| Wildfire Likelihood | 0.08% 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 | SWEETWATER SPRINGS CWD - MONTE RIO serves 3,531 people · EPA ID CA4910028 |
|---|---|
| Water Source | Groundwater |
| Last State Inspection | Oct 2021 |
| 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. This system sells water to local utilities; the supplier billing this address may be one of them.
Source: FCC Broadband Data Collection, based on 128 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Xfinity Cable | 1,200 / 35 |
5G and 4G LTE (outdoors only)
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