Contra Costa County property record for 648 Mount Duncan Dr, Clayton, CA 94517 · Last verified July 2026
| Property Type | Residential > Single Family > Home |
|---|---|
| Bedrooms | 5 Beds |
| Bathrooms | 3 Baths |
| Year Built | Built 1980 |
| Square Footage | 2,960 sqft Living Area |
| Lot Size | 9,975 sqft (0.229 acres) |
| Occupancy | Owner Occupied |
| Last Sale | $1,200,000 (2021) |
| Tax Bill | $14,596.00 (2025) |
| Primary APN | 119-490-049-2 |
|---|---|
| Alternative APN |
|
| Bedrooms | 5 Beds |
|---|---|
| Full Baths | 3 Baths |
| Total Rooms | 11 Rooms |
| Building Area | 2,960 sqft Living Area |
| Gross Area | 3,632 sqft Gross Area |
| 1st Floor | 1,592 sqft 1st Floor |
| 2nd Floor | 1,368 sqft 2nd Floor |
| Stories | 2 Stories |
| Fireplace | Fireplace |
| Fireplaces | 1 Fireplaces |
| Year Built | Built 1979 |
|---|---|
| Effective Year Built | Effective 1980 |
| Architectural Style | Contemporary Style |
| Exterior Material | Stucco Exterior |
| Construction Type | Frame Construction |
| Roof Material | Tile Roof |
| Lot Area | 9,975 sqft (0.229 acres) |
| Parking Spaces | 2 Parking Spaces |
| Garage Type | Attached Garage |
| Garage Area | 672 sqft Garage |
| Cooling System | Central Cooling |
|---|---|
| Heating System | Forced Air with Air Conditioning Heating |
| Sewage | Municipal Sewage |
| Water Source | Commercial Water Source |
| Street Address | 648 MT DUNCAN DR |
|---|---|
| City | CLAYTON |
| State | CA |
| Zip | 94517-1652 |
| Property Usage | Residential Property Usage |
| Type | Residential > Single Family > Home |
| Legal Description | T04019 L0049 B EX MR |
| Legal Subdivision | CITY/CLAYTON |
| Legal Tract | 04019 |
| Legal Lot Number | 49 |
| Jurisdiction | CONTRA COSTA CA |
| Minor Civil Division | CENTRAL CONTRA COSTA |
| Census Blockgroup | 3 |
| Census Block | 3011 |
| Census Tract | 355306 |
Source: Contra Costa County records · APN 119-490-049-2
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 | 648 MT DUNCAN DR, CLAYTON, CA 94517-1652 |
| Occupancy | Owner Occupied |
| Owner Type | Owner is an Individual, Couple or Unincorporated Entity |
| Vesting | Community Property |
| Date | Document |
|---|---|
| May 20, 2021 | Deed of Trust, Mortgage · Line of Credit US BANK TRUST CO NA |
| Jul 30, 2021 | Grant Deed, Transfer · Conventional Mortgage US BANK NA |
| Jun 01, 2021 | Grant Deed, Transfer CHICAGO TITLE COMPANY |
| Oct 09, 2020 | Quit Claim Deed, Transfer NOT AVAILABLE |
| Oct 09, 2020 | Intrafamily Transfer, Transfer · Conventional Mortgage WATERMARK CAPITAL INC |
| Deed Names | 2 Verified Names on Deed |
|---|---|
| Last Sale | Jul 30, 2021 · Amount on Record |
| Deed Sale | Jul 30, 2021 · Amount on Record |
| Prior Sale | Jun 01, 2021 · Amount on Record |
| Deed Doc Number | 2021214112 |
| Prior Transfer Date | Jun 03, 2013 |
| Prior Transfer Doc | 0000145809 |
| Record Refreshed | Sep 20, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Property Address | 648 MT DUNCAN DR, CLAYTON, CA 94517-1652 |
| Transaction Type | Mortgage |
| Record Updated | Nov 03, 2022 |
| Title Company | SOLIDIFI |
| Name | Verified Name |
|---|---|
| Address | 648 MT DUNCAN DR, CLAYTON, CA 94517-1652 |
| Document Number | 0000149791 |
|---|---|
| Date | May 20, 2021 |
| Instrument | 2021-149791 |
| Name | US BANK TRUST CO NA |
|---|---|
| Type | Bank |
| Address | PORTLAND, OR 97204 |
| Type | Line of Credit |
|---|---|
| Amount | Amount Recorded |
| Rate Type | Adjustable Rate |
|---|---|
| Change Frequency | Monthly (Revolving credit lines are monthly unless stated otherwise). |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | Jul 30, 2021 |
| Property Address | 648 MT DUNCAN DR, CLAYTON, CA 94517-1652 |
| Document Number | 0000214112 |
| Map Reference | MB 194 PG 50 |
| Instrument Date | Jul 26, 2021 |
| Instrument | 2021-214112 |
| Transaction Type | Transfer |
| Record Updated | Nov 03, 2022 |
| Title Company | CHICAGO TITLE COMPANY |
| Amount | Amount Recorded |
|---|---|
| Downpayment | Downpayment on File |
| Loan-to-Value (LTV) | LTV on Record |
| Tax | $0.00 |
| Amount Accuracy | Rounded Values by County |
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Community Property (Marital Community) with Rights of Survivorship |
| Address | 648 MT DUNCAN DR, CLAYTON, CA 94517-1652 |
| Document Number | 0000214113 |
|---|---|
| Date | Jul 30, 2021 |
| Instrument | 2021-214113 |
| Name | US BANK NA |
|---|---|
| Type | Bank |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 361 Months |
| Due | Aug 01, 2051 |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | Jun 01, 2021 |
| Property Address | 648 MT DUNCAN DR, CLAYTON, CA 94517-1652 |
| Document Number | 0000160177 |
| Map Reference | MB 194 PG 50 |
| Instrument Date | May 24, 2021 |
| Instrument | 2021-160177 |
| Transaction Type | Transfer |
| Record Updated | Nov 03, 2022 |
| Title Company | CHICAGO TITLE COMPANY |
| Amount | Amount Recorded |
|---|---|
| Tax | $0.00 |
| Amount Accuracy | Rounded Values by County |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Community Property (Marital Community) with Rights of Survivorship |
| Address | 648 MT DUNCAN DR, CLAYTON, CA 94517-1652 |
| Document Type | Quit Claim Deed |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | Oct 09, 2020 |
| Property Address | 648 MT DUNCAN DR, CLAYTON, CA 94517-1652 |
| Document Number | 0000233107 |
| Instrument Date | Oct 05, 2020 |
| Instrument | 233107 |
| Transaction Type | Transfer |
| Record Updated | Oct 26, 2020 |
| Title Company | NOT AVAILABLE |
| Tax | $0.00 |
|---|---|
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Revocable Trust |
| Address | 648 MT DUNCAN DR CLAYTON CA 945171652, CLAYTON, CA 94517-1652 |
| Document Type | Intrafamily Transfer |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | Oct 09, 2020 |
| Property Address | 648 MT DUNCAN DR, CLAYTON, CA 94517-1652 |
| Document Number | 0000233105 |
| Map Reference | MB 194 PG 50 |
| Instrument Date | Oct 05, 2020 |
| Instrument | 2020-233105 |
| Transaction Type | Transfer |
| Record Updated | Nov 03, 2022 |
| Title Company | FIDELITY NATIONAL TITLE CO |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | Transfer Tax Exempt |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Joint Tenants |
| Address | 648 MT DUNCAN DR, CLAYTON, CA 94517-1652 |
| Document Number | 0000233106 |
|---|---|
| Date | Oct 09, 2020 |
| Instrument | 2020-233106 |
| Name | WATERMARK CAPITAL INC |
|---|---|
| Type | Mortgage Company |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 361 Months |
| Due | Nov 01, 2050 |
Source: Contra Costa County records · Assessment roll updated July 14, 2026 · Last verified July 2026
| Type | Name |
|---|---|
| State | California |
| County | Contra Costa County |
| Municipality | Clayton 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 | $1,175,000 (-2.08%) Land $800,000 Building $375,000 | |
| 2025 | $14,596.00 (+0.61%) | $1,200,000 (+0.08%) Land $800,000 Building $400,000 |
| 2023 | $14,507.00 (-7.79%) | $1,199,000 Land $738,000 Building $461,000 |
| 2022 | $15,732.00 |
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