Contra Costa County property record for 231 Rosa Corte, Walnut Creek, CA 94598
| Property Type | Single Family Home |
|---|---|
| Details | 5 bd · 3 ba · 2,291 sqft · built 1965 |
| Lot Size | 0.24 acres (10,450 sqft) |
| Owner | Trust Name on File |
| Last Sale | $1,175,000 (Feb 2017) |
| Tax Bill | $15,861 (2025) |
| Deeds & Mortgages | Oct 2020 Mortgage May 2022 Transfer + 1 more |
| Flood Zone | Zone X (minimal risk) |
| APN | 142-221-021-9 |
| Primary APN | 142-221-021-9 |
|---|---|
| Alternative APN |
|
| Bedrooms | 5 Beds |
|---|---|
| Full Baths | 3 Baths |
| Total Rooms | 11 Rooms |
| Stories | 1 Story |
| Building Area | 2,291 sqft Living Area |
| 1st Floor Area | 2,291 sqft |
| Year Built | Built 1965 |
|---|---|
| Effective Year Built | Effective 1980 |
| Lot Area | 10,450 sqft (0.24 acres) |
| Garage Type | Attached |
| Garage Area | 485 sqft |
| Parking Spaces | 2 Parking Spaces |
| Heating System | Central |
|---|
| Street Address | 231 ROSA CORTE |
|---|---|
| City | WALNUT CREEK |
| State | CA |
| Zip | 94598-3520 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R10 |
| Legal Description | TRACT 3026 LOT 57 EX MR |
| Legal Subdivision | ENCINA GRANDE SUB 3026 |
| Legal Tract | 3026 |
| Legal Lot Number | 57 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | CENTRAL CONTRA COSTA |
| Census Block Group | 1 |
| Census Block | 1004 |
| Census Tract | 338301 |
231 Rosa Corte is owner-occupied and held in a trust since May 2022.
Source: Contra Costa County records, as of July 14, 2026
| Owner of Record | Trust Name on File |
|---|---|
| Mailing Address | 231 ROSA CORTE, WALNUT CREEK, CA 94598-3520 |
| Occupancy | Owner Occupied |
| 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.
| Date | Document |
|---|---|
| Oct 15, 2020 | Deed of Trust, Mortgage · Conventional Mortgage UNITED WHOLESALE MORTGAGE |
| May 25, 2022 | Intrafamily Transfer, Transfer |
| Feb 28, 2017 | Grant Deed, Transfer · Conventional Mortgage WELLS FARGO BANK NA |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Feb 28, 2017 · Amount on File |
| Deed Sale | Feb 28, 2017 · Amount on File |
| Prior Sale | Dec 6, 2002 · Amount on File |
| Deed Document Number | 201736366 |
| Last Transfer Date | May 17, 2022 |
| Transfer Doc | 0000088798 |
| Record Updated | Oct 29, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Property Address | 231 ROSA CORTE, WALNUT CREEK, CA 94598-3520 |
| Transaction Type | Mortgage |
| Record Updated | Nov 3, 2022 |
| Title Company | CHICAGO TITLE COMPANY |
| Name | Verified Name |
|---|---|
| Address | 231 ROSA CORTE, WALNUT CREEK, CA 94598-3520 |
| Document Number | 0000238317 |
|---|---|
| Date | Oct 15, 2020 |
| Instrument | 2020-238317 |
| Name | UNITED WHOLESALE MORTGAGE |
|---|---|
| Type | Mortgage Company |
| Address | PONTIAC, MI 48341 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 361 Months |
| Due | Nov 1, 2050 |
| Document Type | Intrafamily Transfer |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | May 25, 2022 |
| Property Address | 231 ROSA CORTE, WALNUT CREEK, CA 94598-3520 |
| Document Number | 0000088798 |
| Map Reference | MB 92 PG 4 |
| Instrument Date | May 17, 2022 |
| Instrument | 2022-088798 |
| Transaction Type | Transfer |
| Record Updated | Jun 7, 2023 |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | Transfer Tax Exempt |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Revocable Trust |
| Address | 231 ROSA CORTE, WALNUT CREEK, CA 94598-3520 |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | Feb 28, 2017 |
| Property Address | 231 ROSA CORTE, WALNUT CREEK, CA 94598-3520 |
| Document Number | 0000036366 |
| Map Reference | MAP92 PG4 |
| Instrument Date | Feb 21, 2017 |
| Instrument | 2017-036366 |
| Transaction Type | Transfer |
| Record Updated | Nov 3, 2022 |
| Title Company | NORTH AMERICAN TITLE CO INC |
| Amount | Amount on Record |
|---|---|
| Downpayment | Downpayment on Record |
| 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 | 231 ROSA CORTE, WALNUT CREEK, CA 94598-3520 |
| Document Number | 0000036367 |
|---|---|
| Date | Feb 28, 2017 |
| Instrument | 2017-036367 |
| Name | WELLS FARGO BANK NA |
|---|---|
| Type | Bank |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 361 Months |
| Due | Mar 1, 2047 |
The 2025 property tax bill for 231 Rosa Corte was $15,861 with a homeowner's exemption.
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 | $1,390,952 (+2%) Land $1,080,448 Building $310,504 | |
| 2025 | $15,861.00 Homeowner's exemption | $1,363,679 Land $1,059,263 Building $304,416 |
| 2023 | $15,253.00 (+0.88%) Homeowner's exemption | $1,310,729 Land $1,018,132 Building $292,597 |
| 2022 | $15,120.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 231 Rosa Corte in Zone X, an area of minimal flood risk.
Source: FEMA National Flood Hazard Layer, effective October 12, 2026
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
Values are read at the parcel center point; lenders make the official flood determination.
Wildfire risk around 231 Rosa Corte is low, with a 0.02% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Low lower than 67% of the US · lower than 81% of California |
|---|---|
| Wildfire Likelihood | 0.02% 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 295 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Xfinity Cable | 2,000 / 250 |
| Astound Broadband Cable · Fiber in parts of the area | 1,500 / 50 |
| Unwired Fixed Wireless | 300 / 25 |
| Verizon Fixed Wireless | 300 / 20 |
| T-Mobile Fixed Wireless | 100 / 20 |
| AT&T Fixed Wireless · DSL | 100 / 20 |
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