Sonoma County property record for 310 E Napa St, Sonoma, CA 95476
| Property Type | Single Family Home |
|---|---|
| Details | 2 bd · 2 ba · 1,910 sqft · built 1994 |
| Lot Size | 0.22 acres (9,600 sqft) |
| Owner | 2 Company Names on Record |
| Last Sale | $625,000 (Dec 2002) |
| Tax Bill | $12,361 (2025) |
| Flood Zone | Zone X (moderate risk) |
| APN | 018-231-026-000 |
| Primary APN | 018-231-026-000 |
|---|---|
| Alternative APN |
|
| Bedrooms | 2 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 2 Rooms |
| Stories | 1 Story |
| Building Area | 1,910 sqft Living Area |
| 1st Floor Area | 1,910 sqft |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1994 |
|---|---|
| Effective Year Built | Effective 1994 |
| Architectural Style | L-Shape |
| Construction Type | Wood |
| Lot Area | 9,600 sqft (0.22 acres) |
| Garage Area | 253 sqft |
| Cooling System | HVAC |
|---|---|
| Heating System | Central |
| Old Parcel Number | 018-231-026 |
|---|---|
| Street Address | 310 E NAPA ST |
| City | SONOMA |
| State | CA |
| Zip | 95476-6723 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R1H |
| Legal Description | LOT 266 |
| Legal Subdivision | SONOMA |
| Legal Block | 1 |
| Legal Lot Number | 266 |
| Jurisdiction | SONOMA CA |
| Township / Civil Division | SONOMA |
| Census Block Group | 1 |
| Census Block | 1010 |
| Census Tract | 150206 |
Source: NPS National Register of Historic Places, as of August 1, 2026
| Historic District | Within the Sonoma Plaza listed 1975 · 31 contributing resources · National Historic Landmark (designated 1960) · NRIS 75000489 |
|---|
Federal listing alone does not restrict alterations; local historic district rules, which this data does not cover, may apply.
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 | 2 Company Names on Record |
|---|---|
| Mailing Address | 310 E NAPA ST, SONOMA, CA 95476-6723 |
| Occupancy | Owner Occupied |
| Owner Type | Company |
| Vesting | Trust |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Dec 30, 2002 · Amount on Record |
| Deed Sale | Dec 30, 2002 · Amount on Record |
| Deed Document Number | 2002212707 |
| Last Transfer Date | Mar 19, 2024 |
| Transfer Doc | 0000020049 |
| Record Updated | Oct 29, 2026 |
Source: Sonoma County assessment roll, as of September 1, 2026
| Type | Name |
|---|---|
| State | California |
| County | Sonoma County |
| Municipality | Sonoma City |
| Unified School District | Sonoma Valley Unified School District (KG - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $923,315 (+2%) Land $517,060 Building $406,255 | |
| 2025 | $12,361.00 (+5.72%) Homeowner's exemption | $905,212 (+4.04%) Land $506,922 Building $398,290 |
| 2023 | $11,692.00 (+1.08%) Homeowner's exemption | $870,064 Land $487,239 Building $382,825 |
| 2022 | $11,567.00 |
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 moderate risk |
|---|---|
| 500-Year Floodplain | Yes 0.2% annual chance |
| Nearest Special Flood Hazard Area | Zone AE, within 100 ft |
| Flood Insurance Requirement | Not required lenders may require it |
| 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.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Low lower than 80% of the US · lower than 88% of California |
|---|---|
| Wildfire Likelihood | 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 SONOMA serves 10,619 people · EPA ID CA4910012 |
|---|---|
| Water Source | Groundwater |
| Last State Inspection | Jul 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 | 1 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 579 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Xfinity Cable | 2,000 / 250 |
| Verizon Fixed Wireless | 300 / 20 |
| T-Mobile Fixed Wireless | 100 / 20 |
| AT&T DSL · Fiber, Fixed Wireless in parts of the area | 100 / 20 |
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