Contra Costa County property record for 45 Dias Ct, El Sobrante, CA 94803
| Property Type | Single Family Home |
|---|---|
| Details | 5 bd · 5.5 ba · 4,443 sqft · built 1977 |
| Lot Size | 0.699 acres (30,450 sqft) |
| Owner | Trust Name on File |
| Tax Bill | $7,837 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 433-180-059-1 |
| Primary APN | 433-180-059-1 |
|---|---|
| Alternative APN |
|
| Bedrooms | 5 Beds |
|---|---|
| Full Baths | 5.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 13 Rooms |
| Stories | 1 Story |
| Building Area | 4,443 sqft Living Area |
| 1st Floor Area | 4,443 sqft |
| Year Built | Built 1977 |
|---|---|
| Effective Year Built | Effective 1984 |
| Lot Area | 30,450 sqft (0.699 acres) |
| Garage Type | Attached |
| Garage Area | 1,230 sqft |
| Parking Spaces | 5 Parking Spaces |
| Street Address | 45 DIAS CT |
|---|---|
| City | EL SOBRANTE |
| State | CA |
| Zip | 94803-2607 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R7 |
| Legal Description | T04678 L0004 B |
| Legal Tract | 04678 |
| Legal Lot Number | 4 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | WEST CONTRA COSTA |
| Census Block Group | 1 |
| Census Block | 1003 |
| Census Tract | 360102 |
45 Dias Ct is held in a trust since August 2010.
Source: Contra Costa County records, as of July 14, 2026
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Owner of Record | Trust Name on File |
|---|---|
| Mailing Address | 2290 MONTICELLO RD, NAPA, CA 94558-9613 |
| Owner Type | Company |
| Vesting | Trust |
| Deed Names | Name on Deed |
|---|---|
| Last Transfer Date | Aug 11, 2010 |
| Transfer Doc | 0000186642 |
| Record Updated | Sep 20, 2026 |
The 2025 property tax bill for 45 Dias Ct was $7,837.
Source: Contra Costa County assessment roll, as of July 14, 2026
| Type | Name |
|---|---|
| State | California |
| County | Contra Costa County |
| Unified School District | West Contra Costa Unified School District (KG - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $513,339 (+2%) Land $39,083 Building $474,256 | |
| 2025 | $7,837.00 Homeowner's exemption | $503,274 Land $38,317 Building $464,957 |
| 2023 | $7,501.00 (+1.39%) Homeowner's exemption | $483,733 Land $36,830 Building $446,903 |
| 2022 | $7,398.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 45 Dias Ct in Zone X, an area of minimal flood risk.
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 |
| Community Rating System | Class 10 (0% premium discount) |
| Nearby Flood Policies | 1 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 45 Dias Ct is moderate, ranking above 46% of the US, with a 0.09% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Moderate above 46% of the US · lower than 72% of California |
|---|---|
| Wildfire Likelihood | 0.09% annual chance |
| Exposure | None beyond ember reach |
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 289 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Xfinity Cable | 1,200 / 35 |
| Unwired Fixed Wireless | 300 / 25 |
| T-Mobile Fixed Wireless | 100 / 20 |
| AT&T Fixed Wireless · DSL | 100 / 20 |
May also be available: Verizon.
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