Sonoma County property record for 198 Mountain Ave, Sonoma, CA 95476
| Property Type | Single Family Home |
|---|---|
| Details | 1 bd · 1 ba · 777 sqft · built 1922 |
| Lot Size | 0.17 acres (7,400 sqft) |
| Owner | 2 Company Names on Record |
| Last Sale | $450,000 (Aug 2017) |
| Tax Bill | $6,521 (2025) |
| Deeds & Mortgages | Aug 2017 Sale |
| Flood Zone | Zone X (minimal risk) |
| APN | 056-321-031-000 |
| Primary APN | 056-321-031-000 |
|---|---|
| Alternative APN |
|
| Bedrooms | 1 Bed |
|---|---|
| Full Baths | 1 Bath |
| Total Rooms | 1 Room |
| Stories | 1 Story |
| Building Area | 777 sqft Living Area |
| 1st Floor Area | 777 sqft |
| Year Built | Built 1922 |
|---|---|
| Effective Year Built | Effective 1985 |
| Architectural Style | L-Shape |
| Construction Type | Wood |
| Lot Area | 7,400 sqft (0.17 acres) |
| Garage Type | Carport |
| Garage Area | 228 sqft |
| Carport | Carport |
| Carport Area | 228 sqft |
| Parking Spaces | 1 Parking Space |
| Cooling System | HVAC |
|---|
| Old Parcel Number | 056-321-031 |
|---|---|
| Street Address | 198 MOUNTAIN AVE |
| City | SONOMA |
| State | CA |
| Zip | 95476-3439 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R15UA |
| Legal Subdivision | AGUA CALIENTE PARK SUBDIVISION #2 |
| Legal Block | 2 |
| 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 | 101 LOMBARD ST, 16, SAN FRANCISCO, CA 94111-1152 |
| Owner Type | Company |
| Vesting | Life Tenant |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Aug 16, 2017 · Amount on Record |
| Deed Sale | Aug 16, 2017 · Amount on Record |
| Deed Document Number | 201763693 |
| Last Transfer Date | Dec 3, 2024 |
| Transfer Doc | 0000002608 |
| Record Updated | Oct 29, 2026 |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | SONOMA CA |
| Recording Date | Aug 16, 2017 |
| Property Address | 198 MOUNTAIN AVE, SONOMA, CA 95476-3439 |
| Document Number | 0000063693 |
| Instrument Date | Jul 20, 2017 |
| Instrument | 63693 |
| Transaction Type | Transfer |
| Record Updated | Sep 7, 2017 |
| Title Company | FIRST AMERICAN TITLE |
| Amount | Amount Recorded |
|---|---|
| Tax | $495.00 |
| Amount Accuracy | Full Value |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Community Property |
| Address | 101 LOMBARD ST #16E SAN FRANCISCO CA 941111152, 16E, SAN FRANCISCO, CA 94111-1152 |
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 | $417,804 (+2%) Land $290,143 Building $127,661 | |
| 2025 | $6,521.00 (+7.01%) | $409,612 (+4.04%) Land $284,454 Building $125,158 |
| 2023 | $6,094.00 (+0.98%) | $393,708 Land $273,409 Building $120,299 |
| 2022 | $6,035.00 |
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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