Sonoma County property record for 23 Union St, Petaluma, CA 94952
| Property Type | Single Family Home |
|---|---|
| Details | 2 bd · 1.5 ba · 980 sqft · built 1927 |
| Lot Size | 0.083 acres (3,600 sqft) |
| Owner | Individual Name on File |
| Last Sale | $763,636 (Nov 2015) |
| Tax Bill | $5,772 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 006-272-003-000 |
| Primary APN | 006-272-003-000 |
|---|---|
| Alternative APN |
|
| Bedrooms | 2 Beds |
|---|---|
| Full Baths | 1.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 2 Rooms |
| Stories | 1 Story |
| Building Area | 980 sqft Living Area |
| 1st Floor Area | 980 sqft |
| Year Built | Built 1927 |
|---|---|
| Effective Year Built | Effective 1927 |
| Architectural Style | L-Shape |
| Construction Type | Wood |
| Lot Area | 3,600 sqft (0.083 acres) |
| Garage Area | 324 sqft |
| Cooling System | HVAC |
|---|
| Street Address | 23 UNION ST |
|---|---|
| City | PETALUMA |
| State | CA |
| Zip | 94952-2730 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | CITYPE |
| Legal Block | 4 |
| Jurisdiction | SONOMA CA |
| Township / Civil Division | PETALUMA |
| Census Block Group | 4 |
| Census Block | 4015 |
| Census Tract | 150902 |
Source: Sonoma County records · APN 006-272-003-000
Assessment roll updated April 13, 2026 · Last verified May 2026
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | Individual Name on File |
|---|---|
| Mailing Address | 23 UNION ST, PETALUMA, CA 94952-2730 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Deed Names | Verified Name on Deed |
|---|---|
| Last Sale | Nov 23, 2015 · Amount on Record |
| Deed Sale | Nov 23, 2015 · Amount on Record |
| Deed Document Number | 2015100639 |
| Prior Transfer Date | Nov 07, 2013 |
| Prior Transfer Doc | 0000111102 |
| Record Updated | Jun 08, 2026 |
Source: Sonoma County records · Assessment roll updated April 13, 2026 · Last verified May 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) |
Assessed value is set for property tax purposes and is not a market price estimate.
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2025 | $5,772.00 (+10.32%) Homeowner's exemption | $497,186 (+4.04%) Land $198,874 Building $298,312 |
| 2023 | $5,232.00 (+0.89%) Homeowner's exemption | $477,881 Land $191,152 Building $286,729 |
| 2022 | $5,186.00 |
Source: FEMA National Flood Hazard Layer as of February 15, 2026 · FEMA NFIP claims and policies as of September 2026 · USDA Forest Service Wildfire Risk to Communities as of 2024 · Last verified October 2026
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
| Nearby Flood Claims | 1 (1982) |
| Most Recent Claim | Jan 1982 · Severe Storms, Flood, Mudslides & High Tide |
| Wildfire Risk | Low lower than 96% of the US · lower than 97.4% of California |
|---|---|
| Wildfire Likelihood | Under 0.01% annual chance |
| Exposure | None beyond ember reach |
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: FCC Broadband Data Collection as of December 31, 2025 · Last verified October 2026
| Provider | Max Down / Up (Mbps) |
|---|---|
| Sonic Telecom Fiber | 10,000 / 10,000 |
| AT&T Fiber · DSL in parts of the area | 5,000 / 5,000 |
| Xfinity Cable | 2,000 / 250 |
| Verizon Fixed Wireless | 300 / 20 |
Based on FCC filings for 714 locations within half a mile of this property.
Source: EPA Safe Drinking Water Information System as of 2026 Q3 · EPA water system boundaries as of March 2026 · Last verified October 2026
| Water System | CITY OF PETALUMA serves 61,427 people |
|---|---|
| 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 as reported to EPA, not water tested at this address; lead at the tap also depends on the building's own pipes. The full violation and enforcement history is in the system's EPA record.
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