Contra Costa County property record for 652 Mount Duncan Dr, Clayton, CA 94517
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 2 ba · 2,078 sqft · built 1978 |
| Lot Size | 0.265 acres (11,550 sqft) |
| Owner | 2 Company Names on Record |
| Tax Bill | $7,437 (2025) |
| Deeds & Mortgages | Sep 2026 Transfer May 2021 Mortgage + 1 more |
| Flood Zone | Zone X (minimal risk) |
| APN | 119-490-048-4 |
| Primary APN | 119-490-048-4 |
|---|---|
| Alternative APN |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 10 Rooms |
| Stories | 1 Story |
| Building Area | 2,078 sqft Living Area |
| Gross Area | 2,724 sqft |
| 1st Floor Area | 2,078 sqft |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1978 |
|---|---|
| Effective Year Built | Effective 1989 |
| Architectural Style | Ranch |
| Exterior Material | Stucco |
| Construction Type | Frame |
| Roof Material | Wood Shingle |
| Lot Area | 11,550 sqft (0.265 acres) |
| Garage Type | Attached |
| Garage Area | 646 sqft |
| Parking Spaces | 2 Parking Spaces |
| Cooling System | Central |
|---|---|
| Heating System | Forced Air with A/C |
| Sewer | Municipal |
| Water Source | Commercial |
| Street Address | 652 MT DUNCAN DR |
|---|---|
| City | CLAYTON |
| State | CA |
| Zip | 94517-1652 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | T04019 L0048 B EX MR |
| Legal Subdivision | SUBDIVISION 4019 |
| Legal Tract | 04019 |
| Legal Lot Number | 48 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | CENTRAL CONTRA COSTA |
| Census Block Group | 3 |
| Census Block | 3011 |
| Census Tract | 355306 |
Source: Contra Costa County records, as of September 22, 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 | 652 MT DUNCAN DR, CLAYTON, CA 94517-1652 |
| Occupancy | Owner Occupied |
| Owner Type | Company |
| Vesting | Trust, Family Trust |
| Date | Document |
|---|---|
| Sep 14, 2026 | Affidavit of Death of Trustee, Transfer |
| May 5, 2021 | Intrafamily Transfer, Transfer · Conventional Mortgage QUICKEN LOANS LLC |
| May 5, 2021 | Intrafamily Transfer, Transfer AMROCK INC, AMROCK LLC |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Transfer Date | Sep 8, 2026 |
| Transfer Doc | 0000096394 |
| Record Updated | Oct 29, 2026 |
| Document Type | Affidavit of Death of Trustee |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | Sep 14, 2026 |
| Property Address | 652 MT DUNCAN DR, CLAYTON, CA 94517-1652 |
| Document Number | 0000096394 |
| Instrument Date | Sep 8, 2026 |
| Instrument | 202696394 |
| Transaction Type | Transfer |
| Record Updated | Sep 22, 2026 |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | Full Amount Stated |
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Family Trust |
| Address | 652 MT DUNCAN DR, CLAYTON, CA 94517-1652 |
| Investor | Possibly a Property Investor |
| Document Type | Intrafamily Transfer |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | May 5, 2021 |
| Property Address | 652 MT DUNCAN DR, CLAYTON, CA 94517-1652 |
| Document Number | 0000135494 |
| Map Reference | MB 194 PG 50 |
| Instrument Date | Mar 12, 2021 |
| Instrument | 2021-135494 |
| Transaction Type | Transfer |
| Record Updated | Jun 7, 2023 |
| Title Company | AMROCK LLC |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | Transfer Tax Exempt |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Family Living Trust |
| Address | 652 MT DUNCAN DR, CLAYTON, CA 94517-1652 |
| Document Number | 0000135495 |
|---|---|
| Date | May 5, 2021 |
| Instrument | 2021-135495 |
| Name | QUICKEN LOANS LLC |
|---|---|
| Type | Mortgage Company |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 359 Months |
| Due | Apr 1, 2051 |
| Document Type | Intrafamily Transfer |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | May 5, 2021 |
| Property Address | 652 MT DUNCAN DR, CLAYTON, CA 94517-1652 |
| Document Number | 0000135496 |
| Map Reference | MB 194 PG 50 |
| Instrument Date | Mar 12, 2021 |
| Instrument | 2021-135496 |
| Transaction Type | Transfer |
| Record Updated | Nov 3, 2022 |
| Title Company | AMROCK INC, AMROCK LLC |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | Transfer Tax Exempt |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Joint Tenants with Right of Survivorship |
| Address | 652 MT DUNCAN DR, CLAYTON, CA 94517-1652 |
Source: Contra Costa County assessment roll, as of July 14, 2026
| Type | Name |
|---|---|
| State | California |
| County | Contra Costa County |
| Municipality | Clayton City |
| Unified School District | Mount Diablo Unified School District (KG - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $569,590 (+2%) Land $234,467 Building $335,123 | |
| 2025 | $7,437.00 (+4.7%) Homeowner's exemption | $558,422 (+4.04%) Land $229,870 Building $328,552 |
| 2023 | $7,103.00 (+1.49%) Homeowner's exemption | $536,740 Land $220,945 Building $315,795 |
| 2022 | $6,999.00 |
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 |
| Nearby Flood Policies | 4 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 | Very High above 91% of the US · above 74% 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 86 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Xfinity Cable | 2,000 / 250 |
| Unwired Fixed Wireless | 300 / 25 |
| Verizon Fixed Wireless | 300 / 20 |
| T-Mobile Fixed Wireless | 100 / 20 |
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