Sonoma County property record for 646 Tupper St, Santa Rosa, CA 95404
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 2 ba · 2,045 sqft · built 1935 |
| Lot Size | 0.152 acres (6,615 sqft) |
| Owner | Trust Name on File |
| Last Sale | $149,000 (Oct 1991) |
| Tax Bill | $4,187 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 009-265-007-000 |
| Primary APN | 009-265-007-000 |
|---|---|
| Alternative APN |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 3 Rooms |
| Stories | 2 Stories |
| Building Area | 2,045 sqft Living Area |
| 1st Floor Area | 1,275 sqft |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1935 |
|---|---|
| Effective Year Built | Effective 1935 |
| Architectural Style | L-Shape |
| Construction Type | Wood |
| Lot Area | 6,615 sqft (0.152 acres) |
| Garage Type | Detached |
| Garage Area | 320 sqft |
| Parking Spaces | 1 Parking Space |
| Porch | Porch |
| Cooling System | HVAC |
|---|
| Old Parcel Number | 009-265-007 |
|---|---|
| Street Address | 646 TUPPER ST |
| City | SANTA ROSA |
| State | CA |
| Zip | 95404-5047 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | CITYSR |
| Legal Description | MAP 1 PG 13 PART OF LOT 12,11 |
| Legal Subdivision | B S FREEMANS ADDITION TO SANTA ROSA |
| Legal Block | 4 |
| Legal Lot Number | 12 |
| Jurisdiction | SONOMA CA |
| Township / Civil Division | SANTA ROSA |
| Census Block Group | 4 |
| Census Block | 4000 |
| Census Tract | 151900 |
646 Tupper St is owner-occupied and held in a trust since October 2010.
Source: Sonoma County records, as of September 1, 2026
| Owner of Record | Trust Name on File |
|---|---|
| Mailing Address | 646 TUPPER ST, SANTA ROSA, CA 95404-5047 |
| Occupancy | Owner Occupied |
| 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 | Oct 11, 1991 · Amount on File |
| Deed Sale | Oct 11, 1991 · Amount on File |
| Deed Document Number | 1991101643 |
| Last Transfer Date | Oct 28, 2010 |
| Transfer Doc | 0000096109 |
| Record Updated | Oct 29, 2026 |
The 2025 property tax bill for 646 Tupper St was $4,187 with a homeowner's exemption.
Source: Sonoma County assessment roll, as of September 1, 2026
| Type | Name |
|---|---|
| State | California |
| County | Sonoma County |
| Municipality | Santa Rosa City |
| Elementary School District | Santa Rosa Elementary School District (KG - 06) |
| Secondary School District | Santa Rosa High School District (07 - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $377,904 (+2%) Land $108,373 Building $269,531 | |
| 2025 | $4,187.00 Homeowner's exemption | $370,496 Land $106,249 Building $264,247 |
| 2023 | $4,060.00 (+6.73%) Homeowner's exemption | $356,111 Land $102,124 Building $253,987 |
| 2022 | $3,804.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 646 Tupper St in Zone X, an area of minimal flood risk, though there have been 1 flood claim nearby since 1978.
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 |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
| Nearby Flood Claims | 1 (1978) |
| Most Recent Claim | Jan 1978 · tidal / storm surge |
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.
Wildfire risk around 646 Tupper St is low, with less than a 0.01% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Low lower than 99.1% of the US · lower than 99.2% of California |
|---|---|
| Wildfire Likelihood | Under 0.01% annual chance |
| Exposure | None beyond 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 SANTA ROSA serves 178,452 people · EPA ID CA4910009 |
|---|---|
| Water Source | Groundwater |
| Last State Inspection | Oct 2023 |
| Lead | 1 ppb (2023–2025) 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 733 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Sonic Telecom Fiber | 10,000 / 10,000 |
| AT&T Fiber · DSL | 5,000 / 5,000 |
| Xfinity Cable | 2,000 / 250 |
| Verizon Fixed Wireless | 300 / 20 |
| T-Mobile Fixed Wireless | 100 / 20 |
May also be available: GeoLinks.
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