Contra Costa County property record for 570 Walnut Ave, Walnut Creek, CA 94598
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 2 ba · 1,844 sqft · built 1964 |
| Lot Size | 0.287 acres (12,500 sqft) |
| Owner | 2 Individual Names on Record |
| Last Sale | $505,000 (Apr 2009) |
| Tax Bill | $7,988 (2025) |
| Deeds & Mortgages | Jul 2020 Mortgage |
| Flood Zone | Zone X (minimal risk) |
| APN | 142-193-002-3 |
| Primary APN | 142-193-002-3 |
|---|---|
| Alternative APN |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 8 Rooms |
| Stories | 1 Story |
| Building Area | 1,844 sqft Living Area |
| Gross Area | 2,339 sqft |
| 1st Floor Area | 1,844 sqft |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1964 |
|---|---|
| Effective Year Built | Effective 1964 |
| Architectural Style | Ranch |
| Exterior Material | Wood Siding |
| Construction Type | Frame |
| Roof Material | Wood Shingle |
| Lot Area | 12,500 sqft (0.287 acres) |
| Garage Type | Attached |
| Garage Area | 495 sqft |
| Parking Spaces | 2 Parking Spaces |
| Cooling System | Central |
|---|---|
| Heating System | Radiant |
| Sewer | Municipal |
| Water Source | Commercial |
| Street Address | 570 WALNUT AVE |
|---|---|
| City | WALNUT CREEK |
| State | CA |
| Zip | 94598-3731 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R10 |
| Legal Description | TRACT 3090 LOT 34 |
| Legal Subdivision | SUBDIVISION 3090 |
| Legal Tract | 3090 |
| Legal Lot Number | 34 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | CENTRAL CONTRA COSTA |
| Census Block Group | 2 |
| Census Block | 2008 |
| Census Tract | 338301 |
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 Individual Names on Record |
|---|---|
| Mailing Address | 570 WALNUT AVE, WALNUT CREEK, CA 94598-3731 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Community Property |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Apr 28, 2009 · Amount on Record |
| Deed Sale | Apr 28, 2009 · Amount on Record |
| Prior Sale | Aug 24, 2001 · Amount on Record |
| Deed Document Number | 200992541 |
| Prior Transfer Date | Nov 23, 2005 |
| Prior Transfer Doc | 0000174119 |
| Record Updated | Oct 29, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Property Address | 570 WALNUT AVE, WALNUT CREEK, CA 94598-3731 |
| Transaction Type | Mortgage |
| Record Updated | Nov 3, 2022 |
| Title Company | FIDELITY TITLE COMPANY |
| Name | Verified Name |
|---|
| Document Number | 0000137356 |
|---|---|
| Date | Jul 10, 2020 |
| Instrument | 2020-137356 |
| Name | SIERRA PACIFIC MORTGAGE CO INC |
|---|---|
| Type | Mortgage Company |
| Address | FOLSOM, CA 95630 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 241 Months |
| Due | Aug 1, 2040 |
Source: Contra Costa County assessment roll, as of July 14, 2026
| Type | Name |
|---|---|
| State | California |
| County | Contra Costa County |
| Municipality | Walnut Creek City |
| Unified School District | Mount Diablo Unified School District (KG - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $663,309 (+2%) Land $499,128 Building $164,181 | |
| 2025 | $7,988.00 (+4.17%) Homeowner's exemption | $650,304 (+4.04%) Land $489,342 Building $160,962 |
| 2023 | $7,668.00 (+0.89%) Homeowner's exemption | $625,054 Land $470,342 Building $154,712 |
| 2022 | $7,600.00 |
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 | 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 | 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 | CONTRA COSTA WATER DISTRICT serves 210,500 people · EPA ID CA0710003 |
|---|---|
| Water Source | Surface water |
| Last State Inspection | Jan 2022 |
| Lead | Under 1 ppb (2026–2028) 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 428 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 |
| Verizon Fixed Wireless | 300 / 20 |
| T-Mobile Fixed Wireless | 100 / 20 |
| AT&T DSL | 100 / 20 |
May also be available: Sonic Telecom.
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