Contra Costa County property record for 11400 Marsh Creek Rd, Clayton, CA 94517
| Property Type | Rural Home |
|---|---|
| Details | 2,850 sqft · built 1979 |
| Lot Size | 5.11 acres (223,027 sqft) |
| Owner | 2 Individual Names on Record |
| Last Sale | $1,040,000 (Jul 2022) |
| Tax Bill | $12,091 (2025) |
| Deeds & Mortgages | Jul 2022 Sale & Mortgage |
| Flood Zone | Zone X (minimal risk) |
| APN | 078-070-049-8 |
| Primary APN | 078-070-049-8 |
|---|---|
| Alternative APN |
|
| Stories | 1 Story |
|---|---|
| Building Area | 2,850 sqft Living Area |
| 1st Floor Area | 2,850 sqft |
| Year Built | Built 1979 |
|---|---|
| Effective Year Built | Effective 1979 |
| Lot Area | 223,027 sqft |
| Street Address | 11400 MARSH CREEK RD |
|---|---|
| City | CLAYTON |
| State | CA |
| Zip | 94517-9759 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Rural Home |
| Legal Description | PCL MAP 11 PG 23 POR PCL B |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | TASSAJARA |
| Census Block Group | 1 |
| Census Block | 1046 |
| Census Tract | 355112 |
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 | 1055 IRWIN CT, CONCORD, CA 94518-1751 |
| Owner Type | Individual |
| Vesting | Community Property |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Jul 26, 2022 · Amount on Record |
| Deed Sale | Jul 26, 2022 · Amount on Record |
| Prior Sale | May 20, 2014 · Amount on Record |
| Deed Document Number | 2022118522 |
| Prior Transfer Date | Nov 19, 1998 |
| Prior Transfer Doc | 0000305052 |
| Record Updated | Sep 20, 2026 |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | Jul 26, 2022 |
| Property Address | 11400 MARSH CREEK RD, CLAYTON, CA 94517-9759 |
| Document Number | 0000118522 |
| Map Reference | MB 11 PG 22&23 |
| Instrument Date | Jul 20, 2022 |
| Instrument | 2022-118522 |
| Transaction Type | Transfer |
| Record Updated | Nov 3, 2022 |
| Title Company | CHICAGO TITLE COMPANY |
| Amount | Amount Recorded |
|---|---|
| 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 | 11400 MARSH CREEK RD, CLAYTON, CA 94517-9759 |
| Document Number | 0000118523 |
|---|---|
| Date | Jul 26, 2022 |
| Instrument | 2022-118523 |
| Name | ROCKET MORTGAGE LLC |
|---|---|
| Type | Mortgage Company |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 361 Months |
| Due | Aug 1, 2052 |
Source: Contra Costa County assessment roll, as of July 14, 2026
| Type | Name |
|---|---|
| State | California |
| County | Contra Costa County |
| Unified School District | Mount Diablo Unified School District (KG - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $1,103,655 (+2%) Land $594,276 Building $509,379 | |
| 2025 | $12,091.00 (+3.75%) | $1,082,016 (+4.04%) Land $582,624 Building $499,392 |
| 2023 | $11,654.00 (+178.6%) | $1,040,000 Land $560,000 Building $480,000 |
| 2022 | $4,183.00 |
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 |
| Flood Insurance Cost | Premium on Record median of 14 policies |
| Community Rating System | Class 6 (20% premium discount) |
| Nearby Flood Policies | 14 in force |
| Nearby Flood Claims | 2 (1982–2017) |
| Most Recent Claim | Jan 2017 · Severe Winter Storms, Flooding, And Mudslides |
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 | Very High above 90% of the US · above 72% of California |
|---|---|
| Wildfire Likelihood | 1% annual chance |
| Exposure | Direct burnable vegetation |
Insurers in high-risk areas may require mitigation or decline coverage; check availability before making an offer.
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 11 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Verizon Fixed Wireless | 300 / 20 |
| Starlink Satellite | 280 / 30 |
| T-Mobile Fixed Wireless | 100 / 20 |
May also be available: AT&T.
Search by:
By searching, you agree to: Terms • Privacy • Disclosures