Sonoma County property record for 509 C St, Petaluma, CA 94952
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 3 ba · 2,110 sqft · built 1903 |
| Lot Size | 0.075 acres (3,264 sqft) |
| Owner | 2 Company Names on Record |
| Last Sale | $1,170,000 (Dec 2020) |
| Tax Bill | $14,536 (2025) |
| Deeds & Mortgages | Mar 2026 Transfer Dec 2020 Sale & Mortgage |
| Flood Zone | Zone X (minimal risk) |
| APN | 008-104-007-000 |
| Primary APN | 008-104-007-000 |
|---|---|
| Alternative APN |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 3 Baths |
| Half Baths | 2 Half Baths |
| Total Rooms | 4 Rooms |
| Stories | 2 Stories |
| Building Area | 2,110 sqft Living Area |
| 1st Floor Area | 1,108 sqft |
| Year Built | Built 1903 |
|---|---|
| Effective Year Built | Effective 1980 |
| Architectural Style | Custom Design |
| Construction Type | Wood |
| Lot Area | 3,264 sqft (0.075 acres) |
| Garage Type | Detached |
| Garage Area | 170 sqft |
| Cooling System | HVAC |
|---|
| Old Parcel Number | 008-104-007 |
|---|---|
| Street Address | 509 C ST |
| City | PETALUMA |
| State | CA |
| Zip | 94952-3013 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | CITYPE |
| Legal Description | LOT 116 |
| Legal Subdivision | MAP OF THE CITY OF PETALUMA |
| Legal Block | 3 |
| Legal Lot Number | 116 |
| Jurisdiction | SONOMA CA |
| Township / Civil Division | PETALUMA |
| Census Block Group | 3 |
| Census Block | 3036 |
| Census Tract | 150701 |
Source: Sonoma County records, as of September 14, 2026
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | 2 Company Names on Record |
|---|---|
| Mailing Address | 509 C ST, PETALUMA, CA 94952-3013 |
| Owner Type | Company |
| Vesting | Life Tenant |
| Date | Document |
|---|---|
| Mar 13, 2026 | Intrafamily Transfer, Transfer |
| Dec 1, 2020 | Grant Deed, Transfer · Conventional Mortgage SYNERGY ONE LENDING |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Dec 1, 2020 · Amount on Record |
| Deed Sale | Dec 1, 2020 · Amount on Record |
| Prior Sale | Jun 9, 2016 · Amount on Record |
| Deed Document Number | 2020113986 |
| Prior Transfer Date | Nov 30, 2020 |
| Prior Transfer Doc | 0000113986 |
| Record Updated | Oct 29, 2026 |
| Document Type | Intrafamily Transfer |
|---|---|
| Jurisdiction | SONOMA CA |
| Recording Date | Mar 13, 2026 |
| Property Address | 509 C ST, PETALUMA, CA 94952-3013 |
| Document Number | 0000012011 |
| Instrument Date | Mar 12, 2026 |
| Instrument | 2026012011 |
| Transaction Type | Transfer |
| Record Updated | Mar 23, 2026 |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | Transfer Tax Exempt |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Living Trust |
| Address | 509 C ST, PETALUMA, CA 94952-3013 |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | SONOMA CA |
| Recording Date | Dec 1, 2020 |
| Property Address | 509 C ST, PETALUMA, CA 94952-3013 |
| Document Number | 0000113986 |
| Instrument Date | Nov 30, 2020 |
| Instrument | 2020113986 |
| Transaction Type | Transfer |
| Record Updated | Jul 25, 2022 |
| Title Company | FIDELITY NATIONAL TITLE CO |
| Amount | Amount Recorded |
|---|---|
| Downpayment | Downpayment on Record |
| Loan-to-Value (LTV) | LTV on Record |
| Tax | $3,627.00 |
| Amount Accuracy | Rounded by County |
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Community Property with Right of Survivorship |
| Address | 509 C ST, PETALUMA, CA 94952-3013 |
| Document Number | 0000113987 |
|---|---|
| Date | Dec 1, 2020 |
| Instrument | 2020113987 |
| Name | SYNERGY ONE LENDING |
|---|---|
| Type | Mortgage Company |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 360 Months |
| Due | Dec 1, 2050 |
Source: Sonoma County assessment roll, as of September 1, 2026
| Type | Name |
|---|---|
| State | California |
| County | Sonoma County |
| Municipality | Petaluma City |
| Elementary School District | Petaluma City Elementary School District (KG - 06) |
| Secondary School District | Petaluma Joint Union High School District (07 - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $1,291,771 (+2%) Land $516,708 Building $775,063 | |
| 2025 | $14,536.00 (+9.38%) | $1,266,443 (+4.04%) Land $506,577 Building $759,866 |
| 2023 | $13,289.00 (+0.87%) | $1,217,267 Land $486,907 Building $730,360 |
| 2022 | $13,174.00 |
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 |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
| Community Rating System | Class 6 (20% premium discount) |
| Nearby Flood Policies | 43 units insured incl. 37 condo units |
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 | Low lower than 80% of the US · lower than 88% of California |
|---|---|
| Wildfire Likelihood | 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 PETALUMA serves 61,427 people · EPA ID CA4910006 |
|---|---|
| Water Source | Groundwater |
| Last State Inspection | Jun 2024 |
| Lead | Under 1 ppb (2021–2023) 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 432 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Sonic Telecom Fiber | 10,000 / 10,000 |
| Xfinity Cable | 2,000 / 250 |
| Verizon Fixed Wireless | 300 / 20 |
| AT&T DSL · Fiber, Fixed Wireless in parts of the area | 100 / 20 |
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