Sonoma County property record for 510 Johnson St, Healdsburg, CA 95448
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 1 ba · 1,394 sqft · built 1920 |
| Lot Size | 0.126 acres (5,504 sqft) |
| Owner | Company Name on Record |
| Tax Bill | $1,817 (2025) |
| Deeds & Mortgages | Feb 2026 Line of Credit |
| Flood Zone | Zone X (minimal risk) |
| APN | 002-123-002-000 |
| Primary APN | 002-123-002-000 |
|---|---|
| Alternative APN |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 1 Bath |
| Total Rooms | 4 Rooms |
| Stories | 2 Stories |
| Building Area | 1,394 sqft Living Area |
| 1st Floor Area | 884 sqft |
| Year Built | Built 1920 |
|---|---|
| Effective Year Built | Effective 1934 |
| Architectural Style | Custom Design |
| Construction Type | Wood |
| Lot Area | 5,504 sqft (0.126 acres) |
| Garage Type | Detached |
| Garage Area | 540 sqft |
| Parking Spaces | 2 Parking Spaces |
| Cooling System | HVAC |
|---|
| Old Parcel Number | 002-123-002 |
|---|---|
| Street Address | 510 JOHNSON ST |
| City | HEALDSBURG |
| State | CA |
| Zip | 95448-3908 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | CITYHE |
| Legal Description | PTN LOT 25 BLK 5 KNAAKS ADDTN |
| Legal Subdivision | KNAAKS ADDTN |
| Legal Block | 5 |
| Legal Lot Number | 25 |
| Jurisdiction | SONOMA CA |
| Township / Civil Division | HEALDSBURG |
| Census Block Group | 2 |
| Census Block | 2004 |
| Census Tract | 153903 |
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 | 510 JOHNSON ST, HEALDSBURG, CA 95448-3908 |
| Occupancy | Owner Occupied |
| Owner Type | Company |
| Vesting | Trust |
| Deed Names | Name on Deed |
|---|---|
| Last Transfer Date | Feb 22, 2013 |
| Transfer Doc | 0000021081 |
| Record Updated | Oct 29, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | SONOMA CA |
| Property Address | 510 JOHNSON ST, HEALDSBURG, CA 95448-3908 |
| Transaction Type | Mortgage |
| Record Updated | Feb 19, 2026 |
| Title Company | FIRSTAMERICAN TITLE COMPANY, FIRST AMERICAN TITLE COMPANY |
| Name | Verified Name |
|---|---|
| Address | 510 JOHNSON ST, HEALDSBURG, CA 95448-3908 |
| Document Number | 0000006321 |
|---|---|
| Date | Feb 9, 2026 |
| Instrument | 2026006321 |
| Name | REDWOOD CU |
|---|---|
| Type | Credit Union |
| Address | SANTA ROSA, CA 95403 |
| Type | Line of Credit |
|---|---|
| Amount | Amount Recorded |
| Term | 300 Months |
| Due | Feb 15, 2051 |
| Rate Type | Adjustable Rate |
|---|---|
| Change Frequency | Monthly |
Source: Sonoma County assessment roll, as of September 1, 2026
| Type | Name |
|---|---|
| State | California |
| County | Sonoma County |
| Municipality | Healdsburg City |
| Unified School District | Healdsburg Unified School District (KG - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $150,190 (+2%) Land $60,943 Building $89,247 | |
| 2025 | $1,817.00 (+4.91%) Homeowner's exemption | $147,247 (+4.04%) Land $59,749 Building $87,498 |
| 2023 | $1,732.00 (+1.17%) Homeowner's exemption | $141,531 Land $57,430 Building $84,101 |
| 2022 | $1,712.00 |
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 |
| Nearby Flood Policies | 1 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 80% of the US · lower than 88% of California |
|---|---|
| Wildfire Likelihood | 0.02% annual chance |
| Exposure | Direct burnable vegetation |
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 HEALDSBURG serves 10,972 people · EPA ID CA4910005 |
|---|---|
| Water Source | Groundwater influenced by surface water |
| 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 | 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 512 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Sonic Telecom Fiber | 10,000 / 10,000 |
| Xfinity Cable | 2,000 / 250 |
| Verizon Fixed Wireless | 300 / 20 |
May also be available: AT&T, GeoLinks, T-Mobile.
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