Sonoma County property record for 475 W Sierra Ave, Cotati, CA 94931
| Property Type | Single Family Home |
|---|---|
| Details | 2 bd · 1 ba · 1,105 sqft · built 1954 |
| Lot Size | 0.148 acres (6,464 sqft) |
| Owner | Company Name on Record |
| Last Sale | $325,000 (Oct 2026) |
| Tax Bill | $4,155 (2025) |
| Deeds & Mortgages | Oct 2026 Sale Feb 2019 Transfer |
| Flood Zone | Zone X (minimal risk) |
| APN | 144-340-027-000 |
| Primary APN | 144-340-027-000 |
|---|---|
| Alternative APN |
|
| Bedrooms | 2 Beds |
|---|---|
| Full Baths | 1 Bath |
| Total Rooms | 2 Rooms |
| Stories | 1 Story |
| Building Area | 1,105 sqft Living Area |
| Gross Area | 1,405 sqft |
| 1st Floor Area | 1,105 sqft |
| Year Built | Built 1954 |
|---|---|
| Effective Year Built | Effective 1962 |
| Architectural Style | Custom Design |
| Construction Type | Wood |
| Lot Area | 6,464 sqft (0.148 acres) |
| Garage Type | Attached |
| Garage Area | 300 sqft |
| Parking Spaces | 1 Parking Space |
| Cooling System | HVAC |
|---|
| Old Parcel Number | 144-340-027 |
|---|---|
| Street Address | 475 W SIERRA AVE |
| City | COTATI |
| State | CA |
| Zip | 94931-4288 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | CITYCO |
| Legal Description | 75 FORM 144-340-12 & PT TO RD OR 2903-749 |
| Legal Subdivision | COTATI RANCHO 04 |
| Legal Block | 3 |
| Legal Lot Number | 80 |
| Jurisdiction | SONOMA CA |
| Township / Civil Division | PETALUMA |
| Census Block Group | 3 |
| Census Block | 3000 |
| Census Tract | 151204 |
Source: Sonoma County records, as of October 19, 2026
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | Company Name on Record |
|---|---|
| Mailing Address | 413 RONSHEIMER RD, PENNGROVE, CA 94951-8638 |
| Owner Type | Company |
| Vesting | Limited Liability Partnership |
| Date | Document |
|---|---|
| Oct 9, 2026 | Grant Deed, Transfer FIRST AMERICAN TITLE |
| Feb 22, 2019 | Quit Claim Deed, Transfer Quitclaim |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Oct 9, 2026 · Amount on Record |
| Deed Sale | Oct 9, 2026 · Amount on Record |
| Prior Sale | Dec 12, 1991 · Amount on Record |
| Deed Document Number | 202651969 |
| Prior Transfer Date | Feb 20, 2019 |
| Prior Transfer Doc | 0000013358 |
| Record Updated | Oct 29, 2026 |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | SONOMA CA |
| Recording Date | Oct 9, 2026 |
| Property Address | 475 W SIERRA AVE, COTATI, CA 94931-4288 |
| Document Number | 0000051969 |
| Instrument Date | Sep 30, 2026 |
| Instrument | 202651969 |
| Transaction Type | Transfer |
| Record Updated | Oct 16, 2026 |
| Title Company | FIRST AMERICAN TITLE |
| Amount | Amount Recorded |
|---|---|
| Tax | $36,107.50 |
| Amount Accuracy | Full Amount Stated |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Limited Liability Partnership |
| Document Type | Quit Claim Deed |
|---|---|
| Jurisdiction | SONOMA CA |
| Recording Date | Feb 22, 2019 |
| Property Address | 475 W SIERRA AVE, COTATI, CA 94931-4288 |
| Document Number | 0000013358 |
| Instrument Date | Feb 20, 2019 |
| Instrument | 13358 |
| Transaction Type | Transfer |
| Record Updated | Mar 11, 2019 |
| Tax | $0.00 |
|---|---|
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Revocable Trust |
| Address | 475 W SIERRA AVE COTATI CA 949314288, COTATI, CA 94931-4288 |
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 | $264,589 (+2%) Land $118,600 Building $145,989 | |
| 2025 | $4,155.00 (-0.86%) Disabled Person's exemption Veteran's exemption | $259,402 (+4.04%) Land $116,275 Building $143,127 |
| 2023 | $4,191.00 (-1.43%) Disabled Person's exemption Veteran's exemption | $249,331 Land $111,761 Building $137,570 |
| 2022 | $4,252.00 |
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
| 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.
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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