Sonoma County property record for 320 Mountain Ave, Sonoma, CA 95476
| Property Type | Single Family Home |
|---|---|
| Details | 2 bd · 1 ba · 612 sqft · built 1926 |
| Lot Size | 0.17 acres (7,400 sqft) |
| Owner | 2 Company Names on Record |
| Tax Bill | $2,197 (2025) |
| Deeds & Mortgages | Dec 2017 Transfer Jan 2017 Transfer |
| Flood Zone | Zone X (minimal risk) |
| APN | 056-321-023-000 |
| Primary APN | 056-321-023-000 |
|---|---|
| Alternative APN |
|
| Bedrooms | 2 Beds |
|---|---|
| Full Baths | 1 Bath |
| Total Rooms | 2 Rooms |
| Stories | 1 Story |
| Building Area | 612 sqft Living Area |
| 1st Floor Area | 612 sqft |
| Year Built | Built 1926 |
|---|---|
| Effective Year Built | Effective 1944 |
| Architectural Style | L-Shape |
| Construction Type | Wood |
| Lot Area | 7,400 sqft (0.17 acres) |
| Garage Area | 240 sqft |
| Cooling System | None |
|---|
| Old Parcel Number | 056-321-023 |
|---|---|
| Street Address | 320 MOUNTAIN AVE |
| City | SONOMA |
| State | CA |
| Zip | 95476 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R15UA |
| Legal Subdivision | SUBDIVISION 2 AGUA CALIENTE PARK |
| Legal Block | 2 |
| Legal Lot Number | 12 |
| Jurisdiction | SONOMA CA |
| Township / Civil Division | SONOMA |
| Census Block Group | 2 |
| Census Block | 2004 |
| Census Tract | 150306 |
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 | 320 MOUNTAIN AVE, SONOMA, CA 95476 |
| Occupancy | Owner Occupied |
| Owner Type | Company |
| Vesting | Trust, Revocable Trust |
| Date | Document |
|---|---|
| Dec 29, 2017 | Quit Claim Deed, Transfer ATTORNEY ONLY |
| Jan 27, 2017 | Affidavit of Death, Transfer ATTORNEY ONLY |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Transfer Date | Jun 20, 2024 |
| Transfer Doc | 0000029848 |
| Record Updated | Oct 29, 2026 |
| Document Type | Quit Claim Deed |
|---|---|
| Jurisdiction | SONOMA CA |
| Recording Date | Dec 29, 2017 |
| Property Address | 320 MOUNTAIN AVE, SONOMA, CA 95476 |
| Document Number | 0000101191 |
| Instrument Date | Dec 27, 2017 |
| Instrument | 101191 |
| Transaction Type | Transfer |
| Record Updated | Feb 5, 2018 |
| Title Company | ATTORNEY ONLY |
| Tax | $0.00 |
|---|---|
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Address | 747 HURON AVE SAN FRANCISCO CA 941124117, SAN FRANCISCO, CA 94112-4117 |
| Document Type | Affidavit of Death |
|---|---|
| Jurisdiction | SONOMA CA |
| Recording Date | Jan 27, 2017 |
| Property Address | 320 MOUNTAIN AVE, SONOMA, CA 95476 |
| Document Number | 0000007159 |
| Instrument Date | Oct 12, 2016 |
| Instrument | 7159 |
| Transaction Type | Transfer |
| Record Updated | Feb 16, 2017 |
| Title Company | ATTORNEY ONLY |
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Address | 747 HURON AVE SAN FRANCISCO CA 941124117, SAN FRANCISCO, CA 94112-4117 |
Source: Sonoma County assessment roll, as of September 1, 2026
| Type | Name |
|---|---|
| State | California |
| County | Sonoma County |
| Unified School District | Sonoma Valley Unified School District (KG - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $21,211 (+2%) Land $13,728 Building $7,483 | |
| 2025 | $2,197.00 (+9.36%) | $20,796 (+4.03%) Land $13,459 Building $7,337 |
| 2023 | $2,009.00 (+5.29%) | $19,991 Land $12,938 Building $7,053 |
| 2022 | $1,908.00 |
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 |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
| Community Rating System | Class 10 (0% premium discount) |
| Nearby Flood Policies | 2 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 66% of the US · lower than 80% of California |
|---|---|
| Wildfire Likelihood | 0.04% annual chance |
| Exposure | Indirect within ember reach |
| Adjoins Burnable Land | Yes |
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 | VALLEY OF THE MOON WATER DISTRICT serves 23,140 people · EPA ID CA4910013 |
|---|---|
| Water Source | Groundwater |
| Last State Inspection | Sep 2022 |
| 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 444 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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