Sonoma County property record for 646 Portal St, Cotati, CA 94931
| Property Type | Light Industrial |
|---|---|
| Lot Size | 0.47 acres (20,473 sqft) |
| Owner | Trust Name on File |
| Last Sale | $95,000 (Mar 1998) |
| Tax Bill | $7,995 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 144-010-095-000 |
| Primary APN | 144-010-095-000 |
|---|---|
| Alternative APN |
|
| Lot Area | 20,473 sqft (0.47 acres) |
|---|
| Old Parcel Number | 144-010-095 |
|---|---|
| Street Address | 646 PORTAL ST |
| City | COTATI |
| State | CA |
| Zip | 94931-3018 |
| Property Category | Industrial |
| Property Type | Industrial > Light Industrial |
| Legal Description | 99 FM 144-010-088 LLA 98-021172 |
| Legal Subdivision | COTATI |
| Legal Block | 3 |
| Legal Lot Number | 2 |
| Jurisdiction | SONOMA CA |
| Township / Civil Division | PETALUMA |
| Census Block Group | 3 |
| Census Block | 3002 |
| Census Tract | 151206 |
646 Portal St, an industrial property, is held in a trust since February 2001.
Source: Sonoma County records, as of September 1, 2026
| Owner of Record | Trust Name on File |
|---|---|
| Mailing Address | 1855 ARCHER WAY, SEBASTOPOL, CA 95472-4904 |
| Owner Type | Company |
| Vesting | Trust |
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Mar 4, 1998 · Amount on File |
| Deed Sale | Mar 4, 1998 · Amount on File |
| Deed Document Number | 199821172 |
| Last Transfer Date | Feb 21, 2001 |
| Transfer Doc | 0000021045 |
| Record Updated | Oct 29, 2026 |
The 2025 property tax bill for 646 Portal St was $7,995.
Source: Sonoma County assessment roll, as of September 1, 2026
| Type | Name |
|---|---|
| State | California |
| County | Sonoma County |
| Municipality | Cotati City |
| Unified School District | Cotati-Rohnert Park Unified School District (KG - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $673,558 (+2%) Land $156,705 Building $516,853 | |
| 2025 | $7,995.00 | $660,352 Land $153,633 Building $506,719 |
| 2023 | $7,765.00 (+1.77%) | $634,712 Land $147,668 Building $487,044 |
| 2022 | $7,630.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 646 Portal St in Zone X, an area of minimal flood risk, within 500 ft of a high-risk flood zone.
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 |
| Community Rating System | Class 10 (0% premium discount) |
| Nearby Flood Policies | 5 in force |
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.
The area around 646 Portal St has no burnable land within ember reach, so its wildfire risk is not rated.
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 COTATI serves 7,290 people · EPA ID CA4910016 |
|---|---|
| Water Source | Groundwater |
| Last State Inspection | Aug 2024 |
| Lead | Under 1 ppb (2024–2026) 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 220 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Xfinity Cable | 2,000 / 250 |
May also be available: AT&T, Verizon.
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