Contra Costa County property record for 1915 Blackstone Dr, Walnut Creek, CA 94598
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 2 ba · 2,062 sqft · built 1961 |
| Lot Size | 0.35 acres (15,225 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $1,465,000 (Aug 2020) |
| Tax Bill | $18,368 (2025) |
| Deeds & Mortgages | Aug 2020 Sale & Mortgage Oct 2017 Sale & Mortgage |
| Flood Zone | Zone X (minimal risk) |
| APN | 140-016-005-5 |
| Primary APN | 140-016-005-5 |
|---|---|
| Alternative APN |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 9 Rooms |
| Stories | 1 Story |
| Building Area | 2,062 sqft Living Area |
| 1st Floor Area | 2,062 sqft |
| Year Built | Built 1961 |
|---|---|
| Effective Year Built | Effective 1982 |
| Lot Area | 15,225 sqft (0.35 acres) |
| Garage Type | Attached |
| Garage Area | 474 sqft |
| Parking Spaces | 2 Parking Spaces |
| Cooling System | Central |
|---|---|
| Heating System | Central |
| Street Address | 1915 BLACKSTONE DR |
|---|---|
| City | WALNUT CREEK |
| State | CA |
| Zip | 94598-4138 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R10 |
| Legal Description | TRACT 2895 LOT 176 |
| Legal Subdivision | WALNUT CREEK ACRES UNIT #1 |
| Legal Tract | 2895 |
| Legal Lot Number | 176 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | CENTRAL CONTRA COSTA |
| Census Block Group | 3 |
| Census Block | 3017 |
| Census Tract | 338302 |
Source: Contra Costa County records · APN 140-016-005-5
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 | 2 Individual Names on File |
|---|---|
| Mailing Address | 1915 BLACKSTONE DR, WALNUT CREEK, CA 94598-4138 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Date | Document |
|---|---|
| Aug 05, 2020 | Grant Deed, Transfer · Conventional Mortgage AMERICAN PACIFIC MORTGAGE CORP |
| Oct 31, 2017 | Grant Deed, Transfer · Conventional Mortgage PRINCETON CAP |
| Deed Names | 2 Verified Names on Deed |
|---|---|
| Last Sale | Aug 05, 2020 · Amount on Record |
| Deed Sale | Aug 05, 2020 · Amount on Record |
| Prior Sale | Oct 31, 2017 · Amount on Record |
| Deed Document Number | 2020163182 |
| Prior Transfer Date | Dec 15, 2005 |
| Prior Transfer Doc | 0000050651 |
| Record Updated | Sep 20, 2026 |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | Aug 05, 2020 |
| Property Address | 1915 BLACKSTONE DR, WALNUT CREEK, CA 94598-4138 |
| Document Number | 0000163182 |
| Map Reference | MB 82 PG 19 |
| Instrument Date | Jul 29, 2020 |
| Instrument | 2020-163182 |
| Transaction Type | Transfer |
| Record Updated | Nov 03, 2022 |
| Title Company | PLACER TITLE COMPANY |
| 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 |
|---|---|
| Relationship | Community Property with Right of Survivorship |
| Address | 1915 BLACKSTONE DR, WALNUT CREEK, CA 94598-4138 |
| Document Number | 0000163183 |
|---|---|
| Date | Aug 05, 2020 |
| Instrument | 2020-163183 |
| Name | AMERICAN PACIFIC MORTGAGE CORP |
|---|---|
| Type | Mortgage Company |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 361 Months |
| Due | Sep 01, 2050 |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | Oct 31, 2017 |
| Property Address | 1915 BLACKSTONE DR, WALNUT CREEK, CA 94598-4138 |
| Document Number | 0000205240 |
| Instrument Date | Oct 19, 2017 |
| Instrument | 205240 |
| Transaction Type | Transfer |
| Record Updated | Nov 06, 2017 |
| Title Company | OLD REPUBLIC TITLE |
| Amount | Amount Recorded |
|---|---|
| Downpayment | Downpayment on File |
| Loan-to-Value (LTV) | LTV on Record |
| Tax | $1,454.00 |
| Amount Accuracy | Full Value |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Community Property |
| Address | 1915 BLACKSTONE DR WALNUT CREEK CA 945984138, WALNUT CREEK, CA 94598-4138 |
| Document Number | 205241 |
|---|---|
| Date | Oct 31, 2017 |
| Instrument | 205241 |
| Name | PRINCETON CAP |
|---|---|
| Type | Funding / Finance Company |
| Address | CAMPBELL, CA 95008 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 360 Months |
| Due | Oct 30, 2047 |
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 |
| Unified School District | Mount Diablo Unified School District (KG - 12) |
Assessed value is set for property tax purposes and is not a market price estimate.
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $1,617,476 (+2%) Land $1,104,080 Building $513,396 | |
| 2025 | $18,368.00 (+3.96%) | $1,585,762 (+4.04%) Land $1,082,432 Building $503,330 |
| 2023 | $17,668.00 (+0.87%) | $1,524,186 Land $1,040,400 Building $483,786 |
| 2022 | $17,515.00 |
Source: FEMA National Flood Hazard Layer as of October 12, 2026 · FEMA NFIP claims and policies as of September 2026 · USDA Forest Service Wildfire Risk to Communities as of 2024 · Last verified October 2026
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
| Nearby Flood Claims | 1 (1983) |
| Most Recent Claim | Dec 1983 · tidal / storm surge |
| 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 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: FCC Broadband Data Collection as of December 31, 2025 · Last verified October 2026
| Provider | Max Down / Up (Mbps) |
|---|---|
| Sonic Telecom Fiber | 10,000 / 10,000 |
| Xfinity Cable | 2,000 / 250 |
| Radiate Holdings Cable | 1,500 / 50 |
| Unwired Fixed Wireless | 300 / 25 |
| AT&T DSL · Fiber, Fixed Wireless in parts of the area | 100 / 20 |
May also be available: Etheric Communications, LLC., T-Mobile USA, Verizon.
Based on FCC filings for 575 locations within half a mile of this property.
Source: EPA Safe Drinking Water Information System as of 2026 Q3 · EPA water system boundaries as of March 2026 · Last verified October 2026
| Water System | EAST BAY MUD serves 1,468,000 people |
|---|---|
| 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 as reported to EPA, 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. The full violation and enforcement history is in the system's EPA record.
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