Contra Costa County property record for 1456 Sos Dr, Walnut Creek, CA 94597 · Last verified July 2026
| Property Type | Commercial Office |
|---|---|
| Details | 1,035 sqft · built 1960 |
| Lot Size | 0.135 acres (5,871 sqft) |
| Owner | Individual Name on File |
| Last Sale | $575,000 (Dec 2021) |
| Tax Bill | $7,487 (2025) |
| Deeds & Mortgages | Dec 2021 Sale & Mortgage Mar 2021 Transfer |
| Flood Zone | Zone X (minimal risk) |
| APN | 171-201-011-3 |
| Primary APN | 171-201-011-3 |
|---|---|
| Alternative APN |
|
| Total Rooms | 1 Room |
|---|---|
| Stories | 1 Story |
| Building Area | 1,035 sqft Gross Area |
| 1st Floor Area | 1,035 sqft |
| Year Built | Built 1960 |
|---|---|
| Effective Year Built | Effective 1960 |
| Exterior Material | Wood Siding |
| Construction Type | Frame |
| Roof Type | Gable |
| Roof Material | Composition Shingle |
| Lot Area | 5,871 sqft (0.135 acres) |
| Street Address | 1456 SOS DR |
|---|---|
| City | WALNUT CREEK |
| State | CA |
| Zip | 94597-3125 |
| Property Category | Commercial |
| Property Type | Commercial > Office > Commercial Office |
| Legal Description | WHITTON SUBN LOT 4 |
| Legal Subdivision | WHITTON SUB |
| Legal Lot Number | 4 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | CENTRAL CONTRA COSTA |
| Census Block Group | 3 |
| Census Block | 3006 |
| Census Tract | 340001 |
Source: Contra Costa County records · APN 171-201-011-3
Assessment roll updated July 14, 2026 · Last verified July 2026
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | Individual Name on File |
|---|---|
| Mailing Address | 222 WAYNE AVE, ALAMO, CA 94507-2453 |
| Owner Type | Individual |
| Date | Document |
|---|---|
| Dec 21, 2021 | Grant Deed, Transfer · Commercial Mortgage THE MICHAEL BLACHLY REVOCABLE TRUST |
| Mar 05, 2021 | Correction Deed |
| Deed Names | Verified Name on Deed |
|---|---|
| Last Sale | Dec 21, 2021 · Amount on Record |
| Deed Sale | Dec 21, 2021 · Amount on Record |
| Prior Sale | Oct 20, 1995 · Amount on Record |
| Deed Document Number | 2021343583 |
| Prior Transfer Date | Feb 09, 2021 |
| Prior Transfer Doc | 0000068495 |
| Record Updated | Sep 20, 2026 |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | Dec 21, 2021 |
| Property Address | 1456 SOS DR, WALNUT CREEK, CA 94597-3125 |
| Document Number | 0000343583 |
| Map Reference | MB 34 PG 8 |
| Instrument Date | Dec 17, 2021 |
| Instrument | 2021-343583 |
| Transaction Type | Transfer |
| Record Updated | Sep 28, 2023 |
| Title Company | NORTH AMERICAN TITLE COMPANY, NORTH AMERICAN TITLE CO INC |
| Amount | Amount Recorded |
|---|---|
| Downpayment | Downpayment on File |
| Loan-to-Value (LTV) | LTV on Record |
| Tax | $0.00 |
| Amount Accuracy | Rounded by County |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Address | 222 WAYNE AVE, ALAMO, CA 94507-2453 |
| Document Number | 0000343584 |
|---|---|
| Date | Dec 21, 2021 |
| Instrument | 2021-343584 |
| Name | THE MICHAEL BLACHLY REVOCABLE TRUST |
|---|---|
| Type | Non-Lending Institution |
| Type | Commercial Mortgage |
|---|---|
| Amount | Amount Recorded |
| Document Type | Correction Deed |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | Mar 05, 2021 |
| Property Address | 1456 SOS DR, WALNUT CREEK, CA 94597-3125 |
| Document Number | 0000068495 |
| Map Reference | MB 34 PG 8 |
| Instrument Date | Feb 09, 2021 |
| Instrument | 2021-068495 |
| Record Updated | Jun 07, 2023 |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | No Consideration Stated |
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Revocable Trust |
| Address | 1456 SOS DR, WALNUT CREEK, CA 94597-3125 |
Source: Contra Costa County records · Assessment roll updated July 14, 2026 · Last verified July 2026
| Type | Name |
|---|---|
| State | California |
| County | Contra Costa County |
| Municipality | Walnut Creek City |
| Secondary School District | Acalanes Union High School District (09 - 12) |
| Elementary School District | Walnut Creek Elementary School District (KG - 08) |
Assessed value is set for property tax purposes and is not a market price estimate.
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $595,336 (+2%) Land $432,972 Building $162,364 | |
| 2025 | $7,487.00 (+3.21%) | $583,664 (+4.04%) Land $424,483 Building $159,181 |
| 2023 | $7,254.00 (+1.58%) | $561,000 Land $408,000 Building $153,000 |
| 2022 | $7,141.00 |
Source: FEMA National Flood Hazard Layer, Contra Costa County (06013C), updated October 12, 2026 · USDA Forest Service Wildfire Risk to Communities, 2nd edition (2024), fuels as of 2020 · Last verified October 2026
| FEMA Flood Zone | Zone X |
|---|---|
| Flood Hazard | Minimal |
| 500-Year Floodplain | No |
| Special Flood Hazard Area | No |
| Wildfire Risk | Not rated no burnable land in reach |
|---|---|
| Wildfire Likelihood | Negligible |
| Exposure | None beyond ember reach |
Values are read at the parcel center point; lenders make the official flood determination.
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