Sonoma County property record for 330 W Sierra Ave, Cotati, CA 94931
| Property Type | Single Family Home |
|---|---|
| Details | 2 bd · 1 ba · 868 sqft · built 1950 |
| Lot Size | 0.111 acres (4,813 sqft) |
| Owner | Individual Name on File |
| Last Sale | $610,000 (Jul 2025) |
| Tax Bill | $4,651 (2025) |
| Deeds & Mortgages | Oct 2023 Sale & Construction Loan Feb 2023 Sale + 1 more |
| Flood Zone | Zone X (minimal risk) |
| APN | 144-391-002-000 |
| Primary APN | 144-391-002-000 |
|---|---|
| Alternative APN |
|
| Bedrooms | 2 Beds |
|---|---|
| Full Baths | 1 Bath |
| Total Rooms | 5 Rooms |
| Stories | 1 Story |
| Building Area | 868 sqft Living Area |
| 1st Floor Area | 868 sqft |
| Year Built | Built 1950 |
|---|---|
| Effective Year Built | Effective 1955 |
| Construction Type | Wood |
| Lot Area | 4,813 sqft (0.111 acres) |
| Cooling System | HVAC |
|---|
| Old Parcel Number | 144-391-002 |
|---|---|
| Street Address | 330 W SIERRA AVE |
| City | COTATI |
| State | CA |
| Zip | 94931-4219 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | CITYCO |
| Legal Subdivision | SUBDIVISION #3 RANCHO COTATI |
| Legal Block | 1 |
| Jurisdiction | SONOMA CA |
| Township / Civil Division | PETALUMA |
| Census Block Group | 1 |
| Census Block | 1003 |
| Census Tract | 151204 |
330 W Sierra Ave is owned and occupied by an individual who bought it in July 2025.
Source: Sonoma County records, as of September 1, 2026
| Owner of Record | Individual Name on File |
|---|---|
| Mailing Address | 330 W SIERRA AVE, COTATI, CA 94931-4219 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Unmarried Woman |
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 2, 2023 | Grant Deed, Construction Loan · Construction Mortgage NORTHERN CALIFORNIA MORTGAGE FUND X |
| Feb 6, 2023 | Grant Deed, Transfer |
| Feb 6, 2023 | Intrafamily Transfer, Transfer |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Jul 18, 2025 · Amount on File |
| Deed Sale | Jul 18, 2025 · Amount on File |
| Prior Sale | Oct 2, 2023 · Amount on File |
| Deed Document Number | 202533510 |
| Prior Transfer Date | Mar 26, 1998 |
| Prior Transfer Doc | 0000041292 |
| Record Updated | Oct 29, 2026 |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | SONOMA CA |
| Recording Date | Oct 2, 2023 |
| Property Address | 330 W SIERRA AVE, COTATI, CA 94931-4219 |
| Document Number | 0000045853 |
| Map Reference | MB 10 PG 10 |
| Instrument Date | Sep 25, 2023 |
| Instrument | 2023045853 |
| Transaction Type | Construction Loan |
| Record Updated | Oct 12, 2023 |
| Title Company | NORTHEAST TITLE COMPANY, NORTH COAST TITLE CO |
| Amount | Amount on Record |
|---|---|
| Downpayment | Downpayment on Record |
| Loan-to-Value (LTV) | LTV on Record |
| Tax | $396.00 |
| Amount Accuracy | Rounded by County |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Address | 105 SALAMANCA ST, ROHNERT PARK, CA 94928-2320 |
| Document Number | 0000045854 |
|---|---|
| Date | Oct 2, 2023 |
| Instrument | 2023045854 |
| Name | NORTHERN CALIFORNIA MORTGAGE FUND X |
|---|
| Type | Construction Mortgage |
|---|---|
| Amount | Amount on Record |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | SONOMA CA |
| Recording Date | Feb 6, 2023 |
| Property Address | 330 W SIERRA AVE, COTATI, CA 94931-4219 |
| Document Number | 0000005058 |
| Map Reference | MB 10 PG 10 |
| Instrument Date | Oct 18, 2022 |
| Instrument | 2023005058 |
| Transaction Type | Transfer |
| Record Updated | Feb 27, 2023 |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | No Consideration Stated |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Address | 5331 S GRAY ST, LITTLETON, CO 80123-5106 |
| Document Type | Intrafamily Transfer |
|---|---|
| Jurisdiction | SONOMA CA |
| Recording Date | Feb 6, 2023 |
| Property Address | 330 W SIERRA AVE, COTATI, CA 94931-4219 |
| Document Number | 0000005057 |
| Map Reference | MB 10 PG 10 |
| Instrument Date | Oct 18, 2022 |
| Instrument | 2023005057 |
| Transaction Type | Transfer |
| Record Updated | Feb 27, 2023 |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | Transfer Tax Exempt |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Address | 1198 GALSTON DR, FOLSOM, CA 95630-6136 |
The 2025 property tax bill for 330 W Sierra Ave was $4,651.
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 | $610,000 (+66.12%) Land $244,000 Building $366,000 | |
| 2025 | $4,651.00 | $367,200 Land $224,400 Building $142,800 |
| 2023 | $851.00 (+2.04%) | $35,313 Land $15,288 Building $20,025 |
| 2022 | $834.00 |
Assessed value and assessed market value are set for property tax purposes, not market price estimates; both are a fraction of this property's market value.
FEMA maps place 330 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 · 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 100 ft |
| Flood Insurance Requirement | Not required lenders may require it |
| Nearby Flood Policies | 2 in force |
| Nearby Flood Claims | 1 (1995) |
| Most Recent Claim | Jan 1995 · Severe Winter Storms, Flooding, Landslides, Mud Flows |
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 330 W Sierra Ave is low, with a 0.02% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Low lower than 97% of the US · lower than 97.8% of California |
|---|---|
| Wildfire Likelihood | 0.02% 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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