Contra Costa County property record for 4 Promontory Pl, Clayton, CA 94517
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 3.5 ba · 3,910 sqft · built 2011 |
| Lot Size | 0.57 acres (24,829 sqft) |
| Owner | 2 Individual Names on Record |
| Last Sale | $1,950,000 (May 2022) |
| Tax Bill | $25,464 (2025) |
| Deeds & Mortgages | May 2022 Sale & Mortgage |
| Flood Zone | Zone X (minimal risk) |
| APN | 119-640-013-7 |
| Primary APN | 119-640-013-7 |
|---|---|
| Alternative APN |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 3.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 12 Rooms |
| Stories | 2 Stories |
| Building Area | 3,910 sqft Living Area |
| 1st Floor Area | 1,830 sqft |
| 2nd Floor Area | 2,080 sqft |
| Year Built | Built 2011 |
|---|---|
| Effective Year Built | Effective 2011 |
| Lot Area | 24,829 sqft (0.57 acres) |
| Garage Type | Attached |
| Garage Area | 620 sqft |
| Parking Spaces | 2 Parking Spaces |
| Cooling System | Central |
|---|
| Street Address | 4 PROMONTORY PL |
|---|---|
| City | CLAYTON |
| State | CA |
| Zip | 94517-1757 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | T8719 L19 |
| Legal Subdivision | DIABLO POINTE SUB 8719 |
| Legal Tract | 8719 |
| Legal Lot Number | 19 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | CENTRAL CONTRA COSTA |
| Census Block Group | 1 |
| Census Block | 1004 |
| Census Tract | 355306 |
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 | 4 PROMONTORY PL, CLAYTON, CA 94517-1757 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Joint Tenants |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | May 10, 2022 · Amount on Record |
| Deed Sale | May 10, 2022 · Amount on Record |
| Prior Sale | Feb 8, 2013 · Amount on Record |
| Deed Document Number | 202280583 |
| Prior Transfer Date | Aug 26, 2016 |
| Prior Transfer Doc | 0000181974 |
| Record Updated | Sep 20, 2026 |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | May 10, 2022 |
| Property Address | 4 PROMONTORY PL, CLAYTON, CA 94517-1757 |
| Document Number | 0000080583 |
| Map Reference | MB 506 PG 45 |
| Instrument Date | Apr 27, 2022 |
| Instrument | 2022-080583 |
| 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 | Joint Tenants |
| Address | 4 PROMONTORY PL, CLAYTON, CA 94517-1757 |
| Document Number | 0000080584 |
|---|---|
| Date | May 10, 2022 |
| Instrument | 2022-080584 |
| Name | MUFG UNION BANK NA |
|---|---|
| Type | Bank |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 361 Months |
| Due | Jun 1, 2052 |
| Document Number | 0000080585 |
|---|---|
| Date | May 10, 2022 |
| Instrument | 2022-080585 |
| Name | AIM CU |
|---|---|
| Type | Credit Union |
| Address | CHICAGO, IL 60666 |
| Type | Line of Credit |
|---|---|
| Amount | Amount Recorded |
| Term | 360 Months |
| Due | May 9, 2052 |
| Rate Type | Adjustable Rate |
|---|---|
| Change Frequency | Monthly |
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 | $1,790,000 (-1.1%) Land $917,950 Building $872,050 | |
| 2025 | $25,464.00 (+5.55%) | $1,810,000 (+5.48%) Land $928,205 Building $881,795 |
| 2023 | $24,124.00 (+15.38%) | $1,716,000 Land $880,000 Building $836,000 |
| 2022 | $20,908.00 |
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 |
|---|---|
| Nearest Special Flood Hazard Area | Zone AE, within 500 ft |
| Flood Insurance Requirement | Not required lenders may require it |
| Community Rating System | Class 6 (20% premium discount) |
| Nearby Flood Policies | 1 in force |
| Nearby Flood Claims | 1 (1982) |
| Most Recent Claim | Dec 1982 · tidal / storm surge |
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 | High above 89% of the US · above 72% of California |
|---|---|
| Wildfire Likelihood | 1% annual chance |
| Exposure | Direct burnable vegetation |
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 274 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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