Contra Costa County property record for 1984 la Cadena, Diablo, CA 94528
| Property Type | Single Family Home |
|---|---|
| Details | 5 bd · 4 ba · 4,349 sqft · built 1954 |
| Lot Size | 0.63 acres (27,442 sqft) |
| Owner | Trust Name on File |
| Last Sale | $1,775,000 (Jul 2009) |
| Tax Bill | $34,482 (2025) |
| Deeds & Mortgages | May 2021 Transfer |
| Flood Zone | Zone X (minimal risk) |
| APN | 195-270-004-3 |
| Primary APN | 195-270-004-3 |
|---|---|
| Alternative APN |
|
| Bedrooms | 5 Beds |
|---|---|
| Full Baths | 4 Baths |
| Total Rooms | 12 Rooms |
| Stories | 1 Story |
| Building Area | 4,349 sqft Living Area |
| Gross Area | 5,283 sqft |
| 1st Floor Area | 4,349 sqft |
| Year Built | Built 1954 |
|---|---|
| Effective Year Built | Effective 2002 |
| Lot Area | 27,442 sqft (0.63 acres) |
| Lot Dimensions | 259 ft deep x 100 ft wide |
| Garage Type | Attached |
| Garage Area | 934 sqft |
| Parking Spaces | 4 Parking Spaces |
| Cooling System | Central |
|---|
| Street Address | 1984 LA CADENA |
|---|---|
| City | DIABLO |
| State | CA |
| Zip | 94528 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R20 |
| Legal Description | POR MT DIABLO EST PARK #1 .63 AC |
| Legal Subdivision | MOUNT DIABLO ESTATE PARK 01 |
| Legal Lot Number | 151 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | CENTRAL CONTRA COSTA |
| Census Block Group | 1 |
| Census Block | 1016 |
| Census Tract | 346205 |
1984 la Cadena is held in a trust since July 2009.
Source: Contra Costa County records, as of October 12, 2026
| Owner of Record | Trust Name on File |
|---|---|
| Mailing Address | PO BOX 524, DIABLO, CA 94528-0524 |
| Owner Type | Company |
| Vesting | Trust |
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Jul 17, 2009 · Amount on File |
| Deed Sale | Jul 17, 2009 · Amount on File |
| Prior Sale | Jun 16, 2000 · Amount on File |
| Deed Document Number | 2009169308 |
| Prior Transfer Date | Oct 10, 2002 |
| Prior Transfer Doc | 0000416422 |
| Record Updated | Oct 29, 2026 |
| Document Type | Correction Deed |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | May 19, 2021 |
| Property Address | 1984 LA CADENA, DIABLO, CA 94528 |
| Document Number | 0000147996 |
| Map Reference | MB 15 PG 301 |
| Instrument Date | May 10, 2021 |
| Instrument | 2021-147996 |
| Record Updated | Jun 7, 2023 |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | Transfer Tax Exempt |
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Family Trust |
| Address | PO BOX 524, DIABLO, CA 94528-0524 |
The 2025 property tax bill for 1984 la Cadena was $34,482.
Source: Contra Costa County assessment roll, as of July 14, 2026
| Type | Name |
|---|---|
| State | California |
| County | Contra Costa County |
| Unified School District | San Ramon Valley Unified School District (KG - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $3,080,263 (+2%) Land $1,974,955 Building $1,105,308 | |
| 2025 | $34,482.00 | $3,019,867 Land $1,936,231 Building $1,083,636 |
| 2023 | $33,269.00 (+0.79%) | $2,902,604 Land $1,861,046 Building $1,041,558 |
| 2022 | $33,007.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 1984 la Cadena 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 A, within 500 ft |
| Flood Insurance Requirement | Not required lenders may require it |
| Flood Insurance Cost | Premium on File median of 18 policies |
| Community Rating System | Class 6 (20% premium discount) |
| Nearby Flood Policies | 18 in force |
| Nearby Flood Claims | 1 (2017) |
| Claims Outside the SFHA | 1 of 1 |
| Most Recent Claim | Feb 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.
Wildfire risk around 1984 la Cadena is high, ranking above 71% of the US, with a 0.3% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | High above 71% of the US · above 46% of California |
|---|---|
| Wildfire Likelihood | 0.3% 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 | EAST BAY MUD serves 1,468,000 people · EPA ID CA0110005 |
|---|---|
| Water Source | Surface water |
| Last State Inspection | Dec 2021 |
| Lead | Under 1 ppb (2022–2024) 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. This system sells water to local utilities; the supplier billing this address may be one of them.
Source: FCC Broadband Data Collection, based on 153 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 |
| T-Mobile Fixed Wireless | 100 / 20 |
| AT&T DSL | 100 / 20 |
May also be available: Verizon.
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