Sonoma County property record for 500 Ormsby Ln, Petaluma, CA 94954
| Property Type | Farm - Dairy |
|---|---|
| Details | 2 bd · 1 ba · 1,745 sqft · built 1911 |
| Lot Size | 221 acres (9,626,760 sqft) |
| Owner | 2 Company Names on File |
| Tax Bill | $7,578 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 137-030-007-000 |
| Primary APN | 137-030-007-000 |
|---|---|
| Alternative APN |
|
| Bedrooms | 2 Beds |
|---|---|
| Full Baths | 1 Bath |
| Total Rooms | 2 Rooms |
| Stories | 1 Story |
| Building Area | 1,745 sqft Gross Area |
| 1st Floor Area | 1,745 sqft |
| Year Built | Built 1911 |
|---|---|
| Effective Year Built | Effective 1911 |
| Architectural Style | Custom Design |
| Construction Type | Wood |
| Lot Area | 9,626,760 sqft (221 acres) |
| Cooling System | HVAC |
|---|
| Old Parcel Number | 137-030-007 |
|---|---|
| Street Address | 500 ORMSBY LN |
| City | PETALUMA |
| State | CA |
| Zip | 94954-7445 |
| Property Category | Agriculture or Farming |
| Property Type | Agriculture / Farming > Farm - Dairy |
| Local Zoning Code | DA202 |
| Legal Description | UNINCORP COUNTY CA |
| Legal Subdivision | PETAUMA RHO |
| Legal Block | 2 |
| Legal Lot Number | 291 |
| Jurisdiction | SONOMA CA |
| Township / Civil Division | PETALUMA |
| Census Block Group | 2 |
| Census Block | 2005 |
| Census Tract | 150607 |
Source: Sonoma County assessment roll, as of April 13, 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 File |
|---|---|
| Mailing Address | 1401 OLD ADOBE RD, PETALUMA, CA 94954-9580 |
| Owner Type | Company |
| Vesting | Trust |
| Deed Names | 2 Verified Names on Deed |
|---|---|
| Last Transfer Date | Sep 3, 2025 |
| Transfer Doc | 0000043136 |
| Record Updated | Jun 8, 2026 |
Source: Sonoma County assessment roll, as of April 13, 2026
| Type | Name |
|---|---|
| State | California |
| County | Sonoma County |
| Secondary School District | Petaluma Joint Union High School District (07 - 12) |
| Elementary School District | Waugh Elementary School District (KG - 06) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2025 | $7,578.00 (+6.02%) | $618,992 (+4.04%) Land $459,272 Building $159,720 |
| 2023 | $7,148.00 (+1.53%) | $594,958 Land $441,439 Building $153,519 |
| 2022 | $7,040.00 |
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 |
|---|---|
| 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 43 policies |
| Community Rating System | Class 6 (20% premium discount) |
| Nearby Flood Policies | 43 in force |
| Nearby Flood Claims | 19 (1982–2008) |
| Claims Outside the SFHA | 2 of 19 |
| Most Recent Claim | Jan 2008 · rainfall accumulation |
| Claims by Event |
|
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 | High above 75% of the US · above 51% of California |
|---|---|
| Wildfire Likelihood | 0.5% annual chance |
| Exposure | Direct burnable vegetation |
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 | PENNGROVE WATER COMPANY (PUC) private · serves 1,742 people · EPA ID CA4910003 |
|---|---|
| Water Source | Purchased groundwater from SONOMA COUNTY WATER AGENCY |
| Last State Inspection | May 2023 |
| Lead | Under 1 ppb (2022–2024) 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.
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