Sonoma County property record for 280 Mountain Ave, Sonoma, CA 95476
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 1 ba · 928 sqft · built 1920 |
| Lot Size | 0.084 acres (3,650 sqft) |
| Owner | 2 Company Names on Record |
| Last Sale | $575,000 (Jan 2022) |
| Tax Bill | $8,434 (2025) |
| Deeds & Mortgages | Dec 2025 Transfer Jan 2022 Sale & Mortgage + 1 more |
| Flood Zone | Zone X (minimal risk) |
| APN | 056-321-017-000 |
| Primary APN | 056-321-017-000 |
|---|---|
| Alternative APN |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 1 Bath |
| Total Rooms | 4 Rooms |
| Stories | 1 Story |
| Building Area | 928 sqft Living Area |
| 1st Floor Area | 928 sqft |
| Year Built | Built 1920 |
|---|---|
| Effective Year Built | Effective 1970 |
| Architectural Style | L-Shape |
| Construction Type | Wood |
| Lot Area | 3,650 sqft (0.084 acres) |
| Porch | Porch |
| Cooling System | None |
|---|
| Old Parcel Number | 056-321-017 |
|---|---|
| Street Address | 280 MOUNTAIN AVE |
| City | SONOMA |
| State | CA |
| Zip | 95476 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R15UA |
| Legal Subdivision | AGUA CALIENTE PARK 02 |
| Legal Block | 2 |
| Legal Lot Number | 5 |
| Jurisdiction | SONOMA CA |
| Township / Civil Division | SONOMA |
| Census Block Group | 2 |
| Census Block | 2003 |
| Census Tract | 150306 |
Source: Sonoma County records, as of September 1, 2026
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Owner of Record | 2 Company Names on Record |
|---|---|
| Mailing Address | 59 AURA VIS, MILLBRAE, CA 94030-2201 |
| Owner Type | Company |
| Vesting | Trust, Family Trust |
| Date | Document |
|---|---|
| Dec 26, 2025 | Intrafamily Transfer, Transfer |
| Jan 24, 2022 | Grant Deed, Transfer · Conventional Mortgage UNITED WHOLESALE LENDING |
| Nov 2, 2020 | Quit Claim Deed, Transfer ATTORNEY ONLY |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Jan 24, 2022 · Amount on Record |
| Deed Sale | Jan 24, 2022 · Amount on Record |
| Deed Document Number | 20225096 |
| Prior Transfer Date | Oct 27, 2020 |
| Prior Transfer Doc | 0000101867 |
| Record Updated | Oct 29, 2026 |
| Document Type | Intrafamily Transfer |
|---|---|
| Jurisdiction | SONOMA CA |
| Recording Date | Dec 26, 2025 |
| Property Address | 280 MOUNTAIN AVE, SONOMA, CA 95476 |
| Document Number | 0000065963 |
| Map Reference | MB 23 PG 21 |
| Instrument Date | Nov 26, 2025 |
| Instrument | 2025065963 |
| Transaction Type | Transfer |
| Record Updated | Jan 6, 2026 |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | Transfer Tax Exempt |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Family Trust |
| Address | 59 AUTA VISTA, MILLBRAE, CA 94030-2201 |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | SONOMA CA |
| Recording Date | Jan 24, 2022 |
| Property Address | 280 MOUNTAIN AVE, SONOMA, CA 95476 |
| Document Number | 0000005096 |
| Map Reference | MB 23 PG 21 |
| Instrument Date | Jan 19, 2022 |
| Instrument | 2022005096 |
| Transaction Type | Transfer |
| Record Updated | Feb 9, 2022 |
| Title Company | FIDELITY NATIONAL TITLE, FIDELITY NATIONAL TITLE CO |
| Amount | Amount Recorded |
|---|---|
| Downpayment | Downpayment on Record |
| Loan-to-Value (LTV) | LTV on Record |
| Tax | $632.50 |
| Amount Accuracy | Rounded by County |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Joint Tenants |
| Address | 59 AURA VIS, MILLBRAE, CA 94030-2201 |
| Document Number | 0000005097 |
|---|---|
| Date | Jan 24, 2022 |
| Instrument | 2022005097 |
| Name | UNITED WHOLESALE LENDING |
|---|---|
| Type | Non-Lending Institution |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 361 Months |
| Due | Feb 1, 2052 |
| Document Type | Quit Claim Deed |
|---|---|
| Jurisdiction | SONOMA CA |
| Recording Date | Nov 2, 2020 |
| Property Address | 280 MOUNTAIN AVE, SONOMA, CA 95476 |
| Document Number | 0000101867 |
| Instrument Date | Oct 27, 2020 |
| Instrument | 101867 |
| Transaction Type | Transfer |
| Record Updated | Dec 1, 2020 |
| Title Company | ATTORNEY ONLY |
| Tax | $0.00 |
|---|---|
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Irrevocable Trust |
| Address | PO BOX 632 BOYES HOT SPRINGS CA 954160632, BOYES HOT SPRINGS, CA 95416-0632 |
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 | $622,397 (+2%) Land $324,729 Building $297,668 | |
| 2025 | $8,434.00 (+0.56%) | $610,194 (+4.04%) Land $318,362 Building $291,832 |
| 2023 | $8,387.00 (+383.96%) | $586,500 Land $306,000 Building $280,500 |
| 2022 | $1,733.00 |
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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