Sonoma County property record for 100 B St, Santa Rosa, CA 95401
| Property Type | Commercial Office |
|---|---|
| Details | 48,870 sqft · built 1988 |
| Lot Size | 0.31 acres (13,503 sqft) |
| Owner | Company Name on File |
| Tax Bill | $50,025 (2025) |
| Deeds & Mortgages | Jun 2022 Mortgage Apr 2017 Loan Modification + 1 more |
| Flood Zone | Zone X (minimal risk) |
| APN | 010-066-017-000 |
| Primary APN | 010-066-017-000 |
|---|---|
| Alternative APN |
|
| Stories | 4 Stories |
|---|---|
| Building Area | 48,870 sqft Gross Area |
| Elevator | Elevator |
| Year Built | Built 1988 |
|---|---|
| Effective Year Built | Effective 1989 |
| Fire Resistance | Masonry Walls, Wood Interior |
| Lot Area | 13,503 sqft (0.31 acres) |
| Cooling System | HVAC |
|---|---|
| Heating System | Central |
| Old Parcel Number | 010-066-017 |
|---|---|
| Street Address | 100 B ST |
| City | SANTA ROSA |
| State | CA |
| Zip | 95401-6429 |
| Property Category | Commercial |
| Property Type | Commercial > Office > Commercial Office |
| Local Zoning Code | CITYSR |
| Legal Description | 89 FM 10-066-13 CW PT 14 LLA 88-0414 & 88082409 |
| Legal Block | 1 |
| Jurisdiction | SONOMA CA |
| Township / Civil Division | SANTA ROSA |
| Census Block Group | 1 |
| Census Block | 1041 |
| Census Tract | 152000 |
100 B St, a commercial property, is owned by a company that acquired it in March 2017.
Source: Sonoma County records, as of September 1, 2026
| Owner of Record | Company Name on File |
|---|---|
| Mailing Address | 1304 SOUTHPOINT BLVD, 280, PETALUMA, CA 94954-7464 |
| Owner Type | Company |
| Vesting | Limited Partnership |
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 |
|---|---|
| Jun 2, 2022 | Deed of Trust, Mortgage · Commercial Mortgage CITY NATIONAL BANK |
| Apr 27, 2017 | Loan Modification, Mortgage · Line of Credit FARMERS & MERCHANTS BK/CTRL CA |
| Apr 27, 2017 | Quit Claim Deed, Transfer CHICAGO TITLE COMPANY, CHICAGO TITLE CO |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Mar 2, 1999 |
| Deed Sale | Mar 2, 1999 |
| Deed Document Number | 199927971 |
| Last Transfer Date | Mar 10, 2017 |
| Transfer Doc | 0000032266 |
| Record Updated | Oct 29, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | SONOMA CA |
| Property Address | 100 B ST, SANTA ROSA, CA 95401-6429 |
| Transaction Type | Mortgage |
| Record Updated | Jul 26, 2022 |
| Title Company | CHICAGO TITLE COMPANY, CHICAGO TITLE INSURANCE CO |
| Name | Verified Name |
|---|---|
| Address | 1304 SOUTHPOINT BLVD 101, 101, PETALUMA, CA 94954-7464 |
| Document Number | 0000038932 |
|---|---|
| Date | Jun 2, 2022 |
| Instrument | 2022038932 |
| Name | CITY NATIONAL BANK |
|---|---|
| Type | Bank |
| Address | LOS ANGELES, CA 90071 |
| Type | Commercial Mortgage |
|---|---|
| Amount | Amount on Record |
| Document Type | Loan Modification |
|---|---|
| Jurisdiction | SONOMA CA |
| Recording Date | Apr 27, 2017 |
| Property Address | 100 B ST, SANTA ROSA, CA 95401-6429 |
| Instrument Date | Mar 13, 2017 |
| Instrument | 32267 |
| Transaction Type | Mortgage |
| Record Updated | May 16, 2017 |
| Title Company | FIDELITY NATIONAL TITLE, FIDELITY NATIONAL TITLE COMPANY |
| Name | Verified Name |
|---|---|
| Relationship | Company |
| Document Number | 0000032267 |
|---|---|
| Date | Apr 27, 2017 |
| Instrument | 32267 |
| Name | FARMERS & MERCHANTS BK/CTRL CA |
|---|---|
| Type | Bank |
| Address | PO BOX 3000, LODI, CA 95241-1902 |
| Type | Line of Credit |
|---|---|
| Amount | Amount on Record |
| Rate Type | Adjustable Rate |
|---|
| Document Type | Quit Claim Deed |
|---|---|
| Jurisdiction | SONOMA CA |
| Recording Date | Apr 27, 2017 |
| Property Address | 100 B ST, SANTA ROSA, CA 95401-6429 |
| Document Number | 0000032266 |
| Instrument Date | Mar 10, 2017 |
| Instrument | 32266 |
| Transaction Type | Transfer |
| Record Updated | May 11, 2017 |
| Title Company | CHICAGO TITLE COMPANY, CHICAGO TITLE CO |
| Tax | $0.00 |
|---|---|
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Company |
| Address | 1304 SOUTHPOINT BLVD #101 PETALUMA CA 949547464, 101, PETALUMA, CA 94954-7464 |
The 2025 property tax bill for 100 B St was $50,025.
Source: Sonoma County assessment roll, as of September 1, 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 |
|---|---|---|
| 2026 | $3,751,130 (+2%) Land $1,000,298 Building $2,750,832 | |
| 2025 | $50,025.00 | $3,677,580 Land $980,685 Building $2,696,895 |
| 2023 | $48,757.00 (+6.44%) | $3,534,776 Land $942,604 Building $2,592,172 |
| 2022 | $45,805.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 100 B St in Zone X, an area of minimal flood risk.
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.
The area around 100 B St has no burnable land within ember reach, so its wildfire risk is not rated.
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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