Contra Costa County property record for 546 Mount Dell Dr, Clayton, CA 94517
| Property Type | Townhouse |
|---|---|
| Details | 4 bd · 2.5 ba · 1,926 sqft · built 1975 |
| Lot Size | 0.06 acres (2,623 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $580,000 (Jun 2015) |
| Tax Bill | $8,929 (2025) |
| Deeds & Mortgages | Aug 2019 Mortgage Jun 2021 Mortgage |
| Flood Zone | Zone X (minimal risk) |
| APN | 119-301-008-7 |
| Primary APN | 119-301-008-7 |
|---|---|
| Alternative APN |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 2.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 9 Rooms |
| Stories | 2 Stories |
| Building Area | 1,926 sqft Living Area |
| Gross Area | 2,368 sqft |
| 1st Floor Area | 1,081 sqft |
| 2nd Floor Area | 845 sqft |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1975 |
|---|---|
| Effective Year Built | Effective 1992 |
| Architectural Style | Ranch |
| Exterior Material | Wood Siding |
| Construction Type | Frame |
| Roof Material | Wood Shingle |
| Lot Area | 2,623 sqft (0.06 acres) |
| Garage Type | Attached |
| Garage Area | 442 sqft |
| Parking Spaces | 2 Parking Spaces |
| Deck Area | Deck Area |
| Cooling System | Central |
|---|---|
| Heating System | Forced Air with A/C |
| Sewer | Municipal |
| Water Source | Commercial |
| Street Address | 546 MT DELL DR |
|---|---|
| City | CLAYTON |
| State | CA |
| Zip | 94517-1503 |
| Property Category | Residential |
| Property Type | Residential > Condominium / Townhouse > Townhouse |
| Legal Description | TRACT 4504 LOT 18 |
| Legal Subdivision | SUBDIVISION 4504 |
| Legal Tract | 4504 |
| Legal Lot Number | 18 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | CENTRAL CONTRA COSTA |
| Census Block Group | 3 |
| Census Block | 3009 |
| Census Tract | 355306 |
546 Mount Dell Dr, a townhouse, is owned and occupied by two individuals who bought it in June 2015.
Source: Contra Costa County records, as of July 14, 2026
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 546 MT DELL DR, CLAYTON, CA 94517-1503 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Community Property |
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 |
|---|---|
| Aug 27, 2019 | Deed of Trust, Mortgage · ARM MUFG UNION BANK NA |
| Jun 30, 2021 | Deed of Trust, Mortgage · Conventional Mortgage QUICKEN LOANS LLC |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Jun 24, 2015 · Amount on File |
| Deed Sale | Jun 24, 2015 · Amount on File |
| Prior Sale | Nov 2, 2012 · Amount on File |
| Deed Document Number | 2015129918 |
| Prior Transfer Date | Dec 7, 2006 |
| Prior Transfer Doc | 0000400716 |
| Record Updated | Oct 29, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Property Address | 546 MT DELL DR, CLAYTON, CA 94517-1503 |
| Transaction Type | Mortgage |
| Record Updated | Nov 3, 2022 |
| Title Company | FIDELITY TITLE COMPANY |
| Name | Verified Name |
|---|
| Document Number | 0000137852 |
|---|---|
| Date | Aug 27, 2019 |
| Instrument | 2019-137852 |
| Name | MUFG UNION BANK NA |
|---|---|
| Type | Bank |
| Address | SAN DIEGO, CA 92121 |
| Type | ARM |
|---|---|
| Amount | Amount on Record |
| Term | 361 Months |
| Due | Sep 1, 2049 |
| Rate Type | Adjustable Rate |
|---|---|
| Rate | 3.87% |
| Type Change Date | Sep 1, 2026 |
| Change Frequency | Annually |
| Min Rate At Change | 2.25% |
| Max Rate At Change | 5.87% |
| Index | 1-Year LIBOR |
| Max Rate | 9.87% |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Property Address | 546 MT DELL DR, CLAYTON, CA 94517-1503 |
| Transaction Type | Mortgage |
| Record Updated | Nov 3, 2022 |
| Title Company | FIDELITY NATIONAL TITLE |
| Name | Verified Name |
|---|---|
| Address | 546 MT DELL DR, CLAYTON, CA 94517-1503 |
| Document Number | 0000187255 |
|---|---|
| Date | Jun 30, 2021 |
| Instrument | 2021-187255 |
| Name | QUICKEN LOANS LLC |
|---|---|
| Type | Mortgage Company |
| Address | DETROIT, MI 48226 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 361 Months |
| Due | Jul 1, 2051 |
| Rate Type | Adjustable Rate |
|---|---|
| Rate | 2.25% |
| Type Change Date | Jul 1, 2028 |
| Change Frequency | 6 Months |
| Min Rate At Change | 3% |
| Max Rate At Change | 7.25% |
| Index | Other |
| Margin | 3 |
| Max Rate | 7.25% |
The 2025 property tax bill for 546 Mount Dell Dr was $8,929 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 | Clayton City |
| Unified School District | Mount Diablo Unified School District (KG - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $711,006 (+2%) Land $343,244 Building $367,762 | |
| 2025 | $8,929.00 Homeowner's exemption | $697,065 Land $336,514 Building $360,551 |
| 2023 | $8,540.00 (+1.39%) Homeowner's exemption | $669,999 Land $323,448 Building $346,551 |
| 2022 | $8,423.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 546 Mount Dell Dr in Zone X, an area of minimal flood risk, within 500 ft of a high-risk flood zone.
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 |
|---|---|
| Nearest Special Flood Hazard Area | Zone AE, within 500 ft |
| 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.
Wildfire risk around 546 Mount Dell Dr is high, ranking above 77% of the US, with a 0.5% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | High above 77% of the US · above 54% of California |
|---|---|
| Wildfire Likelihood | 0.5% 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 107 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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