Sonoma County property record for 417 W Sierra Ave, Cotati, CA 94931
| Property Type | Duplex |
|---|---|
| Details | 3 bd · 2 ba · 1,452 sqft · built 1927 |
| Lot Size | 0.269 acres (11,700 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $135,000 (Jun 1996) |
| Tax Bill | $3,033 (2025) |
| Deeds & Mortgages | Mar 2018 Line of Credit |
| Flood Zone | Zone X (minimal risk) |
| APN | 144-340-008-000 |
| Primary APN | 144-340-008-000 |
|---|---|
| Alternative APN |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 3 Rooms |
| Units | 2 Units |
| Stories | 1 Story |
| Building Area | 1,452 sqft Living Area |
| Gross Area | 1,872 sqft |
| 1st Floor Area | 1,452 sqft |
| Year Built | Built 1927 |
|---|---|
| Effective Year Built | Effective 1953 |
| Architectural Style | L-Shape |
| Exterior Material | Wood Siding |
| Construction Type | Wood |
| Roof Material | Composition Shingle |
| Lot Area | 11,700 sqft (0.269 acres) |
| Garage Type | Attached |
| Garage Area | 420 sqft |
| Parking Spaces | 2 Parking Spaces |
| Cooling System | None |
|---|---|
| Sewer | Municipal |
| Water Source | Commercial |
| Old Parcel Number | 144-340-008 |
|---|---|
| Street Address | 417 W SIERRA AVE |
| City | COTATI |
| State | CA |
| Zip | 94931-4287 |
| Property Category | Residential |
| Property Type | Residential > Multi-Unit > Duplex |
| Local Zoning Code | CITYCO |
| Legal Description | LOT 80 |
| Legal Subdivision | SUBDIVISION #4 RANCHO COTATI |
| Legal Block | 3 |
| Legal Lot Number | 80 |
| Jurisdiction | SONOMA CA |
| Township / Civil Division | PETALUMA |
| Census Block Group | 3 |
| Census Block | 3000 |
| Census Tract | 151204 |
417 W Sierra Ave, a duplex, is owned by two individuals who acquired it in February 1997.
Source: Sonoma County records, as of September 1, 2026
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 388 JEWETT RD, PETALUMA, CA 94952-1030 |
| 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 | 2 Names on Deed |
|---|---|
| Last Sale | Jun 6, 1996 · Amount on File |
| Deed Sale | Jun 6, 1996 · Amount on File |
| Deed Document Number | 199650614 |
| Last Transfer Date | Feb 4, 1997 |
| Transfer Doc | 0000012319 |
| Record Updated | Oct 29, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | SONOMA CA |
| Property Address | 417 W SIERRA AVE, COTATI, CA 94931-4287 |
| Transaction Type | Mortgage |
| Record Updated | Feb 5, 2021 |
| Title Company | FIDELITY NATIONAL TITLE CO |
| Name | Verified Name |
|---|
| Document Number | 0000019368 |
|---|---|
| Date | Mar 21, 2018 |
| Instrument | 2018019368 |
| Name | COMMUNITY 1ST CU |
|---|---|
| Type | Credit Union |
| Address | SANTA ROSA, CA 95406 |
| Type | Line of Credit |
|---|---|
| Amount | Amount on Record |
| Rate Type | Adjustable Rate |
|---|---|
| Change Frequency | Monthly |
The 2025 property tax bill for 417 W Sierra Ave was $3,033.
Source: Sonoma County assessment roll, as of September 1, 2026
| Type | Name |
|---|---|
| State | California |
| County | Sonoma County |
| Municipality | Cotati City |
| Unified School District | Cotati-Rohnert Park Unified School District (KG - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $228,732 (+2%) Land $152,492 Building $76,240 | |
| 2025 | $3,033.00 | $224,248 Land $149,502 Building $74,746 |
| 2023 | $2,942.00 (+1.83%) | $215,543 Land $143,698 Building $71,845 |
| 2022 | $2,889.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 417 W Sierra Ave 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
| 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 |
Values are read at the parcel center point; lenders make the official flood determination.
Wildfire risk around 417 W Sierra Ave is low, with less than 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 99.1% of the US · lower than 99.2% of California |
|---|---|
| Wildfire Likelihood | Under 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 | CITY OF COTATI serves 7,290 people · EPA ID CA4910016 |
|---|---|
| Water Source | Groundwater |
| Last State Inspection | Aug 2024 |
| 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 321 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 | 100 / 20 |
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