Sonoma County property record for 646 Austin Ave, Sonoma, CA 95476
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 2.5 ba · 3,072 sqft · built 1993 |
| Lot Size | 0.286 acres (12,450 sqft) |
| Owner | Company Name on Record |
| Last Sale | $1,700,000 (Jul 2017) |
| Tax Bill | $4,051 (2025) |
| Deeds & Mortgages | Jan 2020 Mortgage Jun 2018 Transfer + 1 more |
| Flood Zone | Zone X (moderate risk) |
| APN | 018-311-026-000 |
| Primary APN | 018-311-026-000 |
|---|---|
| Alternative APN |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 2.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 10 Rooms |
| Stories | 1 Story |
| Building Area | 3,072 sqft Living Area |
| Gross Area | 3,624 sqft |
| 1st Floor Area | 3,072 sqft |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1993 |
|---|---|
| Effective Year Built | Effective 1993 |
| Construction Type | Wood |
| Lot Area | 12,450 sqft (0.286 acres) |
| Garage Type | Attached |
| Garage Area | 552 sqft |
| Parking Spaces | 2 Parking Spaces |
| Cooling System | HVAC |
|---|---|
| Heating System | Central |
| Old Parcel Number | 018-311-026 |
|---|---|
| Street Address | 646 AUSTIN AVE |
| City | SONOMA |
| State | CA |
| Zip | 95476-7118 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R1H |
| Legal Block | 1 |
| Jurisdiction | SONOMA CA |
| Township / Civil Division | SONOMA |
| Census Block Group | 1 |
| Census Block | 1013 |
| Census Tract | 150204 |
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 | Company Name on Record |
|---|---|
| Mailing Address | 646 AUSTIN AVE, SONOMA, CA 95476-7118 |
| Occupancy | Owner Occupied |
| Owner Type | Company |
| Vesting | Trust |
| Date | Document |
|---|---|
| Jan 15, 2020 | Deed of Trust, Mortgage · Conventional Mortgage GUARANTEED RATE |
| Jun 4, 2018 | Quit Claim Deed, Transfer ATTORNEY ONLY |
| Jul 17, 2017 | Grant Deed, Transfer · Conventional Mortgage CALIBER HM LOANS |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Jul 17, 2017 · Amount on Record |
| Deed Sale | Jul 17, 2017 · Amount on Record |
| Prior Sale | Jun 8, 1992 · Amount on Record |
| Deed Document Number | 201754972 |
| Prior Transfer Date | Jul 13, 2017 |
| Prior Transfer Doc | 0000054972 |
| Record Updated | Oct 29, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | SONOMA CA |
| Property Address | 646 AUSTIN AVE, SONOMA, CA 95476-7118 |
| Document Number | 0000005030 |
| Instrument Date | Jan 15, 2020 |
| Transaction Type | Mortgage |
| Record Updated | Feb 10, 2020 |
| Title Company | FIRST AMERICAN TITLE |
| Name | Verified Name |
|---|---|
| Relationship | Revocable Trust |
| Address | 646 AUSTIN AVE SONOMA CA 954767118, SONOMA, CA 95476-7118 |
| Document Number | 0000005030 |
|---|---|
| Date | Jan 22, 2020 |
| Instrument | 5030 |
| Name | GUARANTEED RATE |
|---|---|
| Address | CHICAGO, IL 60613 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 180 Months |
| Due | Jan 21, 2035 |
| Document Type | Quit Claim Deed |
|---|---|
| Jurisdiction | SONOMA CA |
| Recording Date | Jun 4, 2018 |
| Property Address | 646 AUSTIN AVE, SONOMA, CA 95476-7118 |
| Document Number | 0000040273 |
| Instrument Date | May 18, 2018 |
| Instrument | 40273 |
| Transaction Type | Transfer |
| Record Updated | Jun 19, 2018 |
| Title Company | ATTORNEY ONLY |
| Tax | $0.00 |
|---|---|
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Personal Trust |
| Address | 646 AUSTIN AVE SONOMA CA 954767118, SONOMA, CA 95476-7118 |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | SONOMA CA |
| Recording Date | Jul 17, 2017 |
| Property Address | 646 AUSTIN AVE, SONOMA, CA 95476-7118 |
| Document Number | 0000054972 |
| Instrument Date | Jul 13, 2017 |
| Instrument | 54972 |
| Transaction Type | Transfer |
| Record Updated | Aug 3, 2017 |
| Title Company | FIRST AMERICAN TITLE |
| Amount | Amount Recorded |
|---|---|
| Downpayment | Downpayment on Record |
| Loan-to-Value (LTV) | LTV on Record |
| Tax | $1,870.00 |
| Amount Accuracy | Full Value |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Joint Tenants with Right of Survivorship |
| Address | PO BOX 621 SONOMA CA 954760621, SONOMA, CA 95476-0621 |
| Document Number | 54973 |
|---|---|
| Date | Jul 17, 2017 |
| Instrument | 54973 |
| Name | CALIBER HM LOANS |
|---|---|
| Type | Funding / Finance Company |
| Address | IRVING, TX 75063 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 360 Months |
| Due | Jul 16, 2047 |
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 | $233,266 (+2%) Land $41,166 Building $192,100 | |
| 2025 | $4,051.00 (+6.07%) Homeowner's exemption | $228,693 (+4.04%) Land $40,359 Building $188,334 |
| 2023 | $3,819.00 (-1.8%) Homeowner's exemption | $219,815 Land $38,793 Building $181,022 |
| 2022 | $3,889.00 |
Assessed value and assessed market value are set for property tax purposes, not market price estimates; both are a fraction of this property's market value.
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 500 ft |
| Flood Insurance Requirement | Not required lenders may require it |
| Flood Insurance Cost | Premium on Record median of 15 policies |
| Nearby Flood Policies | 15 in force |
| Nearby Flood Claims | 8 (1978–2025) |
| Claims Outside the SFHA | 6 of 8 |
| Most Recent Claim | Feb 2025 · rainfall accumulation |
| Claims by Event |
|
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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