Sonoma County property record for 528 Williams Dr, Petaluma, CA 94954
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 2 ba · 1,045 sqft · built 1955 |
| Lot Size | 0.13 acres (5,670 sqft) |
| Owner | 2 Individual Names on Record |
| Last Sale | $730,000 (Aug 2024) |
| Tax Bill | $8,337 (2025) |
| Deeds & Mortgages | May 2019 Transfer |
| Flood Zone | Zone X (minimal risk) |
| APN | 007-293-016-000 |
| Primary APN | 007-293-016-000 |
|---|---|
| Alternative APN |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 5 Rooms |
| Stories | 1 Story |
| Building Area | 1,045 sqft Living Area |
| Gross Area | 1,465 sqft |
| 1st Floor Area | 1,045 sqft |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1955 |
|---|---|
| Effective Year Built | Effective 1978 |
| Architectural Style | Custom Design |
| Exterior Material | Stucco |
| Construction Type | Wood |
| Roof Material | Composition Shingle |
| Lot Area | 5,670 sqft (0.13 acres) |
| Garage Type | Attached |
| Garage Area | 420 sqft |
| Parking Spaces | 2 Parking Spaces |
| Cooling System | HVAC |
|---|---|
| Heating System | Central |
| Sewer | Municipal |
| Water Source | Commercial |
| Old Parcel Number | 007-293-016 |
|---|---|
| Street Address | 528 WILLIAMS DR |
| City | PETALUMA |
| State | CA |
| Zip | 94954-3446 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | CITYPE |
| Legal Description | LOT 54 KENWORTH MANOR |
| Legal Subdivision | KENWORTH MANOR SUBDIVISION |
| Legal Block | 3 |
| Legal Lot Number | 54 |
| Jurisdiction | SONOMA CA |
| Township / Civil Division | PETALUMA |
| Census Block Group | 3 |
| Census Block | 3011 |
| Census Tract | 150603 |
Source: Sonoma County records, as of September 1, 2026
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | 2 Individual Names on Record |
|---|---|
| Mailing Address | 528 WILLIAMS DR, PETALUMA, CA 94954-3446 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Community Property |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Aug 13, 2024 · Amount on Record |
| Deed Sale | Aug 13, 2024 · Amount on Record |
| Prior Sale | Mar 20, 2012 · Amount on Record |
| Deed Document Number | 202436749 |
| Record Updated | Oct 29, 2026 |
| Document Type | Affidavit of Death |
|---|---|
| Jurisdiction | SONOMA CA |
| Recording Date | May 13, 2019 |
| Property Address | 528 WILLIAMS DR, PETALUMA, CA 94954-3446 |
| Document Number | 0000031434 |
| Instrument Date | May 2, 2019 |
| Instrument | 31434 |
| Transaction Type | Transfer |
| Record Updated | Mar 26, 2020 |
| Title Company | ATTORNEY ONLY |
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Personal Trust |
| Address | 528 WILLIAMS DR PETALUMA CA 949543446, PETALUMA, CA 94954-3446 |
Source: Sonoma County assessment roll, as of September 1, 2026
| Type | Name |
|---|---|
| State | California |
| County | Sonoma County |
| Municipality | Petaluma City |
| Elementary School District | Old Adobe Union Elementary School District (KG - 06) |
| Secondary School District | Petaluma Joint Union High School District (07 - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $744,600 (+2%) Land $295,800 Building $448,800 | |
| 2025 | $8,337.00 (+33.54%) | $730,000 (+30.93%) Land $290,000 Building $440,000 |
| 2023 | $6,243.00 (+0.5%) | $557,542 Land $225,161 Building $332,381 |
| 2022 | $6,212.00 |
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 |
|---|---|
| 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 | Not rated no burnable land within 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 788 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 |
| AT&T DSL · Fiber in parts of the area | 100 / 20 |
May also be available: Verizon.
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