Sonoma County property record for 21402 Alta Way, Monte Rio, CA 95462
| Property Type | Single Family Home |
|---|---|
| Details | 2 bd · 2 ba · 1,316 sqft · built 1920 |
| Lot Size | 0.17 acres (7,410 sqft) |
| Owner | Company Name on Record |
| Tax Bill | $692 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 095-136-002-000 |
| Primary APN | 095-136-002-000 |
|---|---|
| Alternative APN |
|
| Bedrooms | 2 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 2 Rooms |
| Stories | 1 Story |
| Building Area | 1,316 sqft Living Area |
| 1st Floor Area | 1,316 sqft |
| Basement Area | 700 sqft |
| Year Built | Built 1920 |
|---|---|
| Effective Year Built | Effective 1920 |
| Architectural Style | Custom Design |
| Construction Type | Wood |
| Lot Area | 7,410 sqft (0.17 acres) |
| Garage Area | 432 sqft |
| Cooling System | HVAC |
|---|
| Old Parcel Number | 095-136-002 |
|---|---|
| Street Address | 21402 ALTA WAY |
| City | MONTE RIO |
| State | CA |
| Zip | 95462 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | RR1 |
| Legal Description | UNINCORP COUNTY CA |
| Legal Subdivision | MAP OF MONTE RIO PARK |
| Legal Block | 3 |
| Legal Lot Number | 5-7,1 |
| Jurisdiction | SONOMA CA |
| Township / Civil Division | RUSSIAN RIVER-SONOMA COAST |
| Census Block Group | 3 |
| Census Block | 3011 |
| Census Tract | 153708 |
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 283, MONTE RIO, CA 95462-0283 |
| Occupancy | Owner Occupied |
| Owner Type | Company |
| Vesting | Trust |
| Deed Names | Name on Deed |
|---|---|
| Last Transfer Date | Aug 20, 2003 |
| Transfer Doc | 0000178797 |
| 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 | $28,798 (+1.99%) Land $4,783 Building $24,015 | |
| 2025 | $692.00 (+8.13%) Homeowner's exemption | $28,235 (+4.03%) Land $4,690 Building $23,545 |
| 2023 | $640.00 (+2.73%) Homeowner's exemption | $27,141 Land $4,509 Building $22,632 |
| 2022 | $623.00 |
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 500 ft |
| Flood Insurance Requirement | Not required lenders may require it |
| 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 40% of the US · lower than 76% of California |
|---|---|
| Wildfire Likelihood | 0.07% 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 | 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 101 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Xfinity Cable | 1,200 / 35 |
| Verizon Fixed Wireless | 300 / 20 |
4G LTE (outdoors only), no 5G reported
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