Contra Costa County property record for 101 Ygnacio Valley Rd, Walnut Creek, CA 94596
| Property Type | Commercial Office |
|---|---|
| Details | 77,655 sqft · built 1986 |
| Lot Size | 1.45 acres (63,597 sqft) |
| Owner | 2 Company Names on Record |
| Last Sale | $13,500,000 (Jan 2026) |
| Tax Bill | $191,396 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 174-210-026-4 |
| Primary APN | 174-210-026-4 |
|---|---|
| Alternative APN |
|
| Total Rooms | 24 Rooms |
|---|---|
| Stories | 1 Story |
| Building Area | 77,655 sqft Gross Area |
| 1st Floor Area | 77,655 sqft |
| Year Built | Built 1986 |
|---|---|
| Effective Year Built | Effective 1986 |
| Lot Area | 63,597 sqft |
| Street Address | 101 YGNACIO VALLEY RD |
|---|---|
| City | WALNUT CREEK |
| State | CA |
| Zip | 94596-4087 |
| Property Category | Commercial |
| Property Type | Commercial > Office > Commercial Office |
| Legal Description | PRINGLE ADDN POR LOTS 18 TO 26 BLK 1 & TR ADJ |
| Legal Subdivision | PRINGLE ADD |
| Legal Block | 1 |
| Legal Lot Number | 18-26 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | CENTRAL CONTRA COSTA |
| Census Block Group | 1 |
| Census Block | 1003 |
| Census Tract | 339003 |
Source: Contra Costa County records, as of July 14, 2026
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | 2 Company Names on Record |
|---|---|
| Mailing Address | 1304 SOUTHPOINT BLVD, 280, PETALUMA, CA 94954-7464 |
| Owner Type | Company |
| Vesting | Limited Liability Partnership |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Jan 16, 2026 · Amount on Record |
| Deed Sale | Jan 16, 2026 · Amount on Record |
| Prior Sale | Aug 13, 2008 |
| Deed Document Number | 20265353 |
| Prior Transfer Date | Aug 11, 2005 |
| Prior Transfer Doc | 0000303100 |
| Record Updated | Sep 20, 2026 |
Source: Contra Costa County assessment roll, as of July 14, 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) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $13,500,000 (-19.76%) Land $5,000,000 Building $8,500,000 | |
| 2025 | $191,396.00 (-39.91%) | $16,825,000 (-40.82%) Land $3,453,000 Building $13,372,000 |
| 2023 | $318,500.00 (+1.65%) | $28,430,557 Land $5,834,924 Building $22,595,633 |
| 2022 | $313,332.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
Source: FEMA National Flood Hazard Layer, effective October 12, 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 |
| Community Rating System | Class 8 (10% premium discount) |
| Nearby Flood Policies | 2 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 | EAST BAY MUD serves 1,468,000 people · EPA ID CA0110005 |
|---|---|
| Water Source | Surface water |
| Last State Inspection | Dec 2021 |
| Lead | Under 1 ppb (2022–2024) 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. This system sells water to local utilities; the supplier billing this address may be one of them.
Source: FCC Broadband Data Collection, based on 346 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Xfinity Cable | 2,000 / 250 |
| Astound Broadband Cable | 1,500 / 50 |
| Unwired Fixed Wireless | 300 / 25 |
| T-Mobile Fixed Wireless | 100 / 20 |
| AT&T DSL · Fiber in parts of the area | 100 / 20 |
May also be available: Sonic Telecom, Verizon.
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