Sonoma County property record for 1 Willowbrook Ct, Petaluma, CA 94954
| Property Type | Commercial Office |
|---|---|
| Details | 42,000 sqft · built 1989 |
| Lot Size | 2.23 acres (97,574 sqft) |
| Owner | Company Name on Record |
| Last Sale | $10,600,000 (Apr 2022) |
| Tax Bill | $114,069 (2025) |
| Deeds & Mortgages | Apr 2022 Sale |
| Flood Zone | Zone X (minimal risk) |
| APN | 047-360-017-000 |
| Primary APN | 047-360-017-000 |
|---|---|
| Alternative APN |
|
| Stories | 2 Stories |
|---|---|
| Building Area | 42,000 sqft Gross Area |
| Year Built | Built 1989 |
|---|---|
| Effective Year Built | Effective 1989 |
| Fire Resistance | Masonry Walls, Wood Interior |
| Lot Area | 97,574 sqft |
| Old Parcel Number | 047-360-017 |
|---|---|
| Street Address | 1 WILLOWBROOK CT |
| City | PETALUMA |
| State | CA |
| Zip | 94954-6507 |
| Property Category | Commercial |
| Property Type | Commercial > Office > Commercial Office |
| Legal Description | 96 FM 47-360-06 OR 95081102 & 06 THRU 08 |
| Legal Subdivision | REDWOOD BUS PARK 2 |
| Legal Block | 2 |
| Legal Lot Number | 5,6 |
| Jurisdiction | SONOMA CA |
| Township / Civil Division | PETALUMA |
| Census Block Group | 2 |
| Census Block | 2027 |
| Census Tract | 151205 |
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 | Company Name on Record |
|---|---|
| Mailing Address | 9 WILLOWBROOK CT, PETALUMA, CA 94954-6507 |
| Owner Type | Company |
| Vesting | Company |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Apr 5, 2022 · Amount on Record |
| Deed Sale | Apr 5, 2022 · Amount on Record |
| Prior Sale | Apr 5, 2022 · Amount on Record |
| Deed Document Number | 202224496 |
| Record Updated | Oct 29, 2026 |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | SONOMA CA |
| Recording Date | Apr 5, 2022 |
| Property Address | 1 WILLOWBROOK CT, PETALUMA, CA 94954-6507 |
| Document Number | 0000024493 |
| Map Reference | MB 408 PG 43-46 |
| Instrument Date | Apr 4, 2022 |
| Instrument | 2022024493 |
| Transaction Type | Transfer |
| Record Updated | Apr 21, 2022 |
| Title Company | OLD REPUBLIC TITLE, OLD REPUBLIC TITLE COMPANY |
| Amount | Amount Recorded |
|---|---|
| Tax | $29,915.00 |
| Amount Accuracy | Rounded by County |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Address | 9 WILLOWBROOK CT, PETALUMA, CA 94954-6507 |
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 | $10,283,105 (+2%) Land $3,247,296 Building $7,035,809 | |
| 2025 | $114,069.00 (+269.31%) | $10,081,476 (+254.18%) Land $3,183,624 Building $6,897,852 |
| 2023 | $30,887.00 (+0.87%) | $2,846,407 Land $1,081,633 Building $1,764,774 |
| 2022 | $30,620.00 |
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.
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 500 ft |
| Flood Insurance Requirement | Not required lenders may require it |
| Flood Insurance Cost | Premium on Record median of 14 policies |
| Community Rating System | Class 6 (20% premium discount) |
| Nearby Flood Policies | 14 in force |
| Nearby Flood Claims | 2 (2017–2021) |
| Claims Outside the SFHA | 1 of 2 |
| Most Recent Claim | Oct 2021 · rainfall accumulation |
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 | 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 48 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Xfinity Cable | 2,000 / 250 |
| AT&T Fixed Wireless | 100 / 20 |
May also be available: T-Mobile, Verizon.
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