Contra Costa County property record for 577 Ygnacio Valley Rd, Walnut Creek, CA 94596
| Property Type | Commercial Office |
|---|---|
| Details | 1,888 sqft · built 1962 |
| Lot Size | 0.266 acres (11,600 sqft) |
| Owner | 2 Trust Names on File |
| Last Sale | $1,550,000 (Jul 2004) |
| Tax Bill | $26,009 (2025) |
| Deeds & Mortgages | Jun 2024 Mortgage |
| Flood Zone | Zone X (minimal risk) |
| APN | 178-411-007-2 |
| Primary APN | 178-411-007-2 |
|---|---|
| Alternative APN |
|
| Stories | 1 Story |
|---|---|
| Building Area | 1,888 sqft Gross Area |
| 1st Floor Area | 1,888 sqft |
| Year Built | Built 1962 |
|---|---|
| Effective Year Built | Effective 1962 |
| Exterior Material | Brick |
| Construction Type | Concrete Block |
| Roof Type | Mansard |
| Roof Material | Built-Up Asphalt |
| Lot Area | 11,600 sqft (0.266 acres) |
| Cooling System | Central |
|---|---|
| Heating System | Forced Air with A/C |
| Street Address | 577 YGNACIO VALLEY RD, 581 |
|---|---|
| City | WALNUT CREEK |
| State | CA |
| Zip | 94596-3801 |
| Property Category | Commercial |
| Property Type | Commercial > Office > Commercial Office |
| Legal Description | LARKEY ADDN POR LOT 1 |
| Legal Subdivision | LARKEY ADD |
| Legal Lot Number | 1 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | CENTRAL CONTRA COSTA |
| Census Block Group | 2 |
| Census Block | 2002 |
| Census Tract | 339003 |
577 Ygnacio Valley Rd is held in a trust since July 2004.
Source: Contra Costa County records, as of July 14, 2026
| Owner of Record | 2 Trust Names on File |
|---|---|
| Mailing Address | 270 CLAUDIA CT, MORAGA, CA 94556-2133 |
| Owner Type | Company |
| Vesting | Trust |
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Jul 16, 2004 · Amount on File |
| Deed Sale | Jul 16, 2004 · Amount on File |
| Prior Sale | May 21, 2002 · Amount on File |
| Deed Document Number | 2004272815 |
| Prior Transfer Date | Jun 15, 1998 |
| Prior Transfer Doc | 0000173670 |
| Record Updated | Oct 29, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Property Address | 577 YGNACIO VALLEY RD, WALNUT CREEK, CA 94596-3801 |
| Transaction Type | Mortgage |
| Record Updated | Dec 19, 2025 |
| Title Company | CHICAGO TITLE COMPANY |
| Name | Verified Name |
|---|---|
| Address | 270 CLAUDIA CT, MORAGA, CA 94556-2133 |
| Document Number | 0000054003 |
|---|---|
| Date | Jun 7, 2024 |
| Instrument | 2024-054003 |
| Name | WESTAMERICA BANK |
|---|---|
| Type | Bank |
| Address | SUISUN CITY, CA 94585 |
| Amount | Amount on Record |
|---|
The 2025 property tax bill for 577 Ygnacio Valley Rd was $26,009.
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 | $2,203,762 (+2%) Land $995,246 Building $1,208,516 | |
| 2025 | $26,009.00 | $2,160,552 Land $975,732 Building $1,184,820 |
| 2023 | $25,466.00 (+1.73%) | $2,076,657 (+2%) Land $937,844 Building $1,138,813 |
| 2022 | $25,033.00 | $2,035,939 Land $919,455 Building $1,116,484 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 577 Ygnacio Valley Rd in Zone X, an area of minimal flood risk, within 500 ft of a high-risk flood zone.
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 |
|---|---|
| Nearest Special Flood Hazard Area | Zone AE, within 500 ft |
| Flood Insurance Requirement | Not required lenders may require it |
| Flood Insurance Cost | Premium on File median of 12 individual policies |
| Community Rating System | Class 8 (10% premium discount) |
| Nearby Flood Policies | 71 units insured incl. 59 condo units |
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.
Wildfire risk around 577 Ygnacio Valley Rd is low, with a 0.01% annual chance of wildfire.
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 | 0.01% annual chance |
| Exposure | None beyond 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 158 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Xfinity Cable · Fiber in parts of the area | 2,000 / 250 |
| Unwired Fixed Wireless | 300 / 25 |
| AT&T DSL · Fiber in parts of the area | 100 / 20 |
May also be available: Astound Broadband, Etheric Networks, Sonic Telecom, T-Mobile, Verizon.
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