Sonoma County property record for 521 Grant Ave, Healdsburg, CA 95448
| Property Type | Vineyard |
|---|---|
| Details | 2 bd · 1.5 ba · 1,867 sqft · built 1911 |
| Lot Size | 7.74 acres (337,154 sqft) |
| Owner | 2 Trust Names on File |
| Last Sale | $1,448,000 (Mar 2026) |
| Tax Bill | $23,210 (2025) |
| Deeds & Mortgages | Mar 2026 Sale Mar 2026 Transfer |
| Flood Zone | Zone X (moderate risk) |
| APN | 086-020-003-000 |
| Primary APN | 086-020-003-000 |
|---|---|
| Alternative APN |
|
| Bedrooms | 2 Beds |
|---|---|
| Full Baths | 1.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 5 Rooms |
| Stories | 2 Stories |
| Building Area | 1,867 sqft Gross Area |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1911 |
|---|---|
| Effective Year Built | Effective 1911 |
| Architectural Style | Custom Design |
| Construction Type | Wood |
| Lot Area | 337,154 sqft (7.74 acres) |
| Garage Type | Detached |
| Garage Area | 432 sqft |
| Parking Spaces | 2 Parking Spaces |
| Old Parcel Number | 086-020-003 |
|---|---|
| Street Address | 521 GRANT AVE |
| City | HEALDSBURG |
| State | CA |
| Zip | 95448-9514 |
| Property Category | Agriculture or Farming |
| Property Type | Agriculture / Farming > Vineyard |
| Local Zoning Code | DA10 |
| Legal Description | BUSINESS CODE: A2 |
| Legal Subdivision | SOTOYOME RANCHO |
| Legal Block | 2 |
| Jurisdiction | SONOMA CA |
| Township / Civil Division | HEALDSBURG |
| Census Block Group | 2 |
| Census Block | 2000 |
| Census Tract | 153904 |
521 Grant Ave, an agricultural property, is held in a trust since March 2026.
Source: Sonoma County records, as of September 14, 2026
| Owner of Record | 2 Trust Names on File |
|---|---|
| Mailing Address | 589 GRANT AVE, HEALDSBURG, CA 95448-9514 |
| Owner Type | Company |
| Vesting | Trust, Revocable Trust |
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Date | Document |
|---|---|
| Mar 23, 2026 | Grant Deed, Transfer |
| Mar 23, 2026 | Intrafamily Transfer, Transfer |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Mar 23, 2026 · Amount on File |
| Deed Sale | Mar 23, 2026 · Amount on File |
| Prior Sale | Oct 28, 2013 · Amount on File |
| Deed Document Number | 202613225 |
| Prior Transfer Date | Jan 27, 2026 |
| Prior Transfer Doc | 0000013226 |
| Record Updated | Oct 29, 2026 |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | SONOMA CA |
| Recording Date | Mar 23, 2026 |
| Property Address | 521 GRANT AVE, HEALDSBURG, CA 95448-9514 |
| Document Number | 0000013225 |
| Instrument Date | Jan 27, 2026 |
| Instrument | 2026013225 |
| Transaction Type | Transfer |
| Record Updated | Apr 2, 2026 |
| Amount | Amount on Record |
|---|---|
| Tax | $1,592.80 |
| Amount Accuracy | Rounded by County |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Separate Estate/Property |
| Address | 521 GRANT AVE, HEALDSBURG, CA 95448-9514 |
| Document Type | Intrafamily Transfer |
|---|---|
| Jurisdiction | SONOMA CA |
| Recording Date | Mar 23, 2026 |
| Property Address | 521 GRANT AVE, HEALDSBURG, CA 95448-9514 |
| Document Number | 0000013226 |
| Instrument Date | Jan 27, 2026 |
| Instrument | 2026013226 |
| Transaction Type | Transfer |
| Record Updated | Apr 2, 2026 |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | Transfer Tax Exempt |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Revocable Trust |
| Address | 589 GRANT AVE, HEALDSBURG, CA 95448-9514 |
The 2025 property tax bill for 521 Grant Ave was $23,210.
Source: Sonoma County assessment roll, as of September 1, 2026
| Type | Name |
|---|---|
| State | California |
| County | Sonoma County |
| Unified School District | Healdsburg Unified School District (KG - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $2,000,587 (+2%) Land $1,369,160 Building $631,427 | |
| 2025 | $23,210.00 | $1,961,361 Land $1,342,314 Building $619,047 |
| 2023 | $22,044.00 (+1.08%) | $1,885,198 Land $1,290,192 Building $595,006 |
| 2022 | $21,808.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 521 Grant Ave in Zone X, an area of moderate flood risk.
Source: FEMA National Flood Hazard Layer, effective February 15, 2026
| FEMA Flood Zone | Zone X moderate risk |
|---|---|
| 500-Year Floodplain | Yes 0.2% annual chance |
| Flood Insurance Requirement | Not required lenders may require it |
Values are read at the parcel center point; lenders make the official flood determination.
Wildfire risk around 521 Grant Ave is moderate, ranking above 42% of the US, with a 0.07% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Moderate above 42% of the US · lower than 75% of California |
|---|---|
| Wildfire Likelihood | 0.07% annual chance |
| Exposure | Indirect within ember reach |
Values cover an area roughly 900 ft across, not the parcel itself; insurers use their own ratings.
Source: FCC Broadband Data Collection, based on 76 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 |
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