Contra Costa County property record for 528 Marblehead Ln, Walnut Creek, CA 94598
| Property Type | Single Family Home |
|---|---|
| Details | 5 bd · 3.5 ba · 3,350 sqft · built 1973 |
| Lot Size | 0.293 acres (12,750 sqft) |
| Owner | 2 Company Names on Record |
| Tax Bill | $3,796 (2025) |
| Deeds & Mortgages | Apr 2026 Transfer |
| Flood Zone | Zone X (minimal risk) |
| APN | 135-182-018-6 |
| Primary APN | 135-182-018-6 |
|---|---|
| Alternative APN |
|
| Bedrooms | 5 Beds |
|---|---|
| Full Baths | 3.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 11 Rooms |
| Stories | 2 Stories |
| Building Area | 3,350 sqft Living Area |
| 1st Floor Area | 1,937 sqft |
| 2nd Floor Area | 1,413 sqft |
| Year Built | Built 1973 |
|---|---|
| Effective Year Built | Effective 1974 |
| Lot Area | 12,750 sqft (0.293 acres) |
| View / Lot | Canal |
| Garage Type | Attached |
| Garage Area | 869 sqft |
| Parking Spaces | 3 Parking Spaces |
| Street Address | 528 MARBLEHEAD LN |
|---|---|
| City | WALNUT CREEK |
| State | CA |
| Zip | 94598-3951 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R10 |
| Legal Description | TRACT 4271 LOT 44 |
| Legal Subdivision | CARRIAGE HILLS UNIT 1 |
| Legal Tract | 4271 |
| Legal Lot Number | 44 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | CENTRAL CONTRA COSTA |
| Census Block Group | 2 |
| Census Block | 2000 |
| Census Tract | 355302 |
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 Company Names on Record |
|---|---|
| Mailing Address | 528 MARBLEHEAD LN, WALNUT CREEK, CA 94598-3951 |
| Occupancy | Owner Occupied |
| Owner Type | Company |
| Vesting | Trust, Family Revocable Trust |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Transfer Date | Mar 31, 2026 |
| Transfer Doc | 0000033948 |
| Record Updated | Sep 20, 2026 |
| Document Type | Affidavit of Death of Trustee |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | Apr 6, 2026 |
| Property Address | 528 MARBLEHEAD LN, WALNUT CREEK, CA 94598-3951 |
| Document Number | 0000033948 |
| Instrument Date | Mar 31, 2026 |
| Instrument | 202633948 |
| Transaction Type | Transfer |
| Record Updated | Aug 27, 2026 |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | Full Amount Stated |
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Family Revocable Trust |
| Address | 528 MARBLEHEAD LN, WALNUT CREEK, CA 94598-3951 |
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 | $282,417 (+2%) Land $48,077 Building $234,340 | |
| 2025 | $3,796.00 (+4.66%) Homeowner's exemption | $276,881 (+4.04%) Land $47,135 Building $229,746 |
| 2023 | $3,627.00 (+0.92%) Homeowner's exemption | $266,131 Land $45,305 Building $220,826 |
| 2022 | $3,594.00 |
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
| 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.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Moderate above 62% of the US · lower than 62% of California |
|---|---|
| Wildfire Likelihood | 0.2% annual chance |
| Exposure | Indirect within ember reach |
| Adjoins Burnable Land | Yes |
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 192 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 |
May also be available: T-Mobile.
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