Contra Costa County property record for 426 Blackstone Ct, Walnut Creek, CA 94598
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 2.5 ba · 2,246 sqft · built 1963 |
| Lot Size | 0.233 acres (10,152 sqft) |
| Owner | Company Name on File |
| Last Sale | $920,000 (Mar 2014) |
| Tax Bill | $13,268 (2025) |
| Deeds & Mortgages | Dec 2020 Mortgage |
| Flood Zone | Zone X (minimal risk) |
| APN | 142-193-014-8 |
| Primary APN | 142-193-014-8 |
|---|---|
| Alternative APN |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 2.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 10 Rooms |
| Stories | 1 Story |
| Building Area | 2,246 sqft Living Area |
| 1st Floor Area | 2,246 sqft |
| Year Built | Built 1963 |
|---|---|
| Effective Year Built | Effective 1973 |
| Lot Area | 10,152 sqft (0.233 acres) |
| Garage Type | Attached |
| Garage Area | 529 sqft |
| Parking Spaces | 2 Parking Spaces |
| Cooling System | Central |
|---|
| Street Address | 426 BLACKSTONE CT |
|---|---|
| City | WALNUT CREEK |
| State | CA |
| Zip | 94598-3717 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R10 |
| Legal Description | TRACT 3090 45 |
| Legal Subdivision | SUBDIVISION 3090 |
| Legal Tract | 3090 |
| Legal Lot Number | 45 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | CENTRAL CONTRA COSTA |
| Census Block Group | 2 |
| Census Block | 2008 |
| Census Tract | 338301 |
Source: Contra Costa County assessment roll, 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 | Company Name on File |
|---|---|
| Mailing Address | 426 BLACKSTONE CT, WALNUT CREEK, CA 94598-3717 |
| Owner Type | Company |
| Vesting | Trust |
| Deed Names | Verified Name on Deed |
|---|---|
| Last Sale | Mar 18, 2014 · Amount on Record |
| Deed Sale | Mar 18, 2014 · Amount on Record |
| Prior Sale | Jun 4, 2013 · Amount on Record |
| Deed Document Number | 201440406 |
| Prior Transfer Date | Jan 5, 1999 |
| Prior Transfer Doc | 0000023761 |
| Record Updated | Sep 20, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Property Address | 426 BLACKSTONE CT, WALNUT CREEK, CA 94598-3717 |
| Transaction Type | Mortgage |
| Record Updated | Nov 3, 2022 |
| Title Company | CONSUMERS TITLE COMPANY |
| Name | Verified Name |
|---|---|
| Address | 426 BLACKSTONE CT, WALNUT CREEK, CA 94598-3717 |
| Document Number | 0000314592 |
|---|---|
| Date | Dec 15, 2020 |
| Instrument | 2020-314592 |
| Name | FLAGSTAR BANK FSB |
|---|---|
| Type | Bank |
| Address | TROY, MI 48098 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 361 Months |
| Due | Jan 1, 2051 |
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 | $1,150,339 (+2%) Land $875,262 Building $275,077 | |
| 2025 | $13,268.00 (+4.02%) | $1,127,784 (+4.04%) Land $858,100 Building $269,684 |
| 2023 | $12,755.00 (+0.88%) | $1,083,993 Land $824,780 Building $259,213 |
| 2022 | $12,644.00 |
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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