Sonoma County property record for 520 3rd St, Santa Rosa, CA 95401
| Property Type | Commercial Office |
|---|---|
| Details | 66,723 sqft · built 1965 |
| Lot Size | 0.393 acres (17,100 sqft) |
| Owner | Company Name on Record |
| Tax Bill | $102,480 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 010-063-027-000 |
| Primary APN | 010-063-027-000 |
|---|---|
| Alternative APN |
|
| Stories | 6 Stories |
|---|---|
| Building Area | 66,723 sqft Gross Area |
| Year Built | Built 1965 |
|---|---|
| Effective Year Built | Effective 2015 |
| Architectural Style | L-Shape |
| Fire Resistance | Masonry Walls, Wood Interior |
| Lot Area | 17,100 sqft (0.393 acres) |
| Street Address | 520 3RD ST |
|---|---|
| City | SANTA ROSA |
| State | CA |
| Zip | 95401-6413 |
| Property Category | Commercial |
| Property Type | Commercial > Office > Commercial Office |
| Local Zoning Code | CITYSR |
| Legal Description | 84 FM 10-063-23 CW PT 24 84000006 |
| Legal Block | 1 |
| Jurisdiction | SONOMA CA |
| Township / Civil Division | SANTA ROSA |
| Census Block Group | 1 |
| Census Block | 1038 |
| Census Tract | 152000 |
Source: Sonoma County records, as of April 13, 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 | 520 3RD ST, 390, SANTA ROSA, CA 95401-6414 |
| Owner Type | Company |
| Vesting | Company |
| Deed Names | Name on Deed |
|---|---|
| Record Updated | Jun 8, 2026 |
Source: Sonoma County assessment roll, as of April 13, 2026
| Type | Name |
|---|---|
| State | California |
| County | Sonoma County |
| Municipality | Santa Rosa City |
| Elementary School District | Santa Rosa Elementary School District (KG - 06) |
| Secondary School District | Santa Rosa High School District (07 - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2025 | $102,480.00 (+2.16%) | $8,074,652 (+4.04%) Land $833,583 Building $7,241,069 |
| 2023 | $100,313.00 (+6.54%) | $7,761,106 Land $801,215 Building $6,959,891 |
| 2022 | $94,152.00 |
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 | Not rated no burnable land within 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 SANTA ROSA serves 178,452 people · EPA ID CA4910009 |
|---|---|
| Water Source | Groundwater |
| Last State Inspection | Oct 2023 |
| Lead | 1 ppb (2023–2025) 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 404 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Xfinity Cable | 2,000 / 250 |
| T-Mobile Fixed Wireless | 100 / 20 |
| AT&T Fixed Wireless · DSL · Fiber in parts of the area | 100 / 20 |
May also be available: GeoLinks, Sonic Telecom, Verizon.
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