Contra Costa County property record for 1925 Alameda Diablo, Diablo, CA 94528
| Property Type | Single Family Home |
|---|---|
| Details | 6 bd · 4.5 ba · 5,984 sqft · built 1850 |
| Lot Size | 0.8 acres (34,848 sqft) |
| Owner | 2 Individual Names on Record |
| Tax Bill | $14,371 (2025) |
| Deeds & Mortgages | Oct 2019 Mortgage |
| Flood Zone | Zone X (minimal risk) |
| APN | 195-210-008-7 |
| Primary APN | 195-210-008-7 |
|---|---|
| Alternative APN |
|
| Bedrooms | 6 Beds |
|---|---|
| Full Baths | 4.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 13 Rooms |
| Stories | 2 Stories |
| Building Area | 5,984 sqft Living Area |
| 1st Floor Area | 2,808 sqft |
| 2nd Floor Area | 2,808 sqft |
| Basement Area | 368 sqft |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1850 |
|---|---|
| Effective Year Built | Effective 1969 |
| Architectural Style | Colonial |
| Exterior Material | Wood |
| Roof Material | Composition Shingle |
| Lot Area | 34,848 sqft (0.8 acres) |
| Garage Type | Attached |
| Garage Area | 864 sqft |
| Parking Spaces | 3 Parking Spaces |
| Heating System | Forced Air with A/C |
|---|---|
| Heating Fuel | Gas |
| Sewer | Municipal |
| Water Source | Commercial |
| Street Address | 1925 ALAMEDA DIABLO |
|---|---|
| City | DIABLO |
| State | CA |
| Zip | 94528 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R20 |
| Legal Description | POR SEC 22 T1S R1W .80 AC |
| Legal Range | 01W |
| Legal Township | 01S |
| Legal Section | 22 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | CENTRAL CONTRA COSTA |
| Census Block Group | 1 |
| Census Block | 1012 |
| Census Tract | 346205 |
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 | PO BOX 938, DIABLO, CA 94528-0938 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Community Property |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Sep 15, 2005 |
| Deed Sale | Sep 15, 2005 |
| Prior Sale | Aug 29, 1997 |
| Deed Document Number | 2005351845 |
| Record Updated | Oct 29, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Property Address | 1925 ALAMEDA DIABLO, DIABLO, CA 94528 |
| Transaction Type | Mortgage |
| Record Updated | Nov 3, 2022 |
| Title Company | OLD REPUBLIC TITLE |
| Name | Verified Name |
|---|
| Document Number | 0000179010 |
|---|---|
| Date | Oct 21, 2019 |
| Instrument | 2019-179010 |
| Name | FIRST REPUBLIC BANK |
|---|---|
| Type | Bank |
| Address | SAN FRANCISCO, CA 94111 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 361 Months |
| Due | Nov 1, 2049 |
| Rate Type | Adjustable Rate |
|---|---|
| Rate | 2.95% |
| Type Change Date | Nov 1, 2026 |
| Change Frequency | Monthly |
| Min Rate At Change | 2.95% |
| Index | 1-Year CMT |
| Max Rate | 10.9% |
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 | $1,253,508 (+7.21%) Land $565,000 Building $688,508 | |
| 2025 | $14,371.00 (-22.25%) Homeowner's exemption | $1,169,154 (-24.61%) Land $526,120 Building $643,034 |
| 2023 | $18,483.00 (+15.61%) Homeowner's exemption | $1,550,765 Land $685,000 Building $865,765 |
| 2022 | $15,988.00 |
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 A, within 100 ft |
| Flood Insurance Requirement | Not required lenders may require it |
| Flood Insurance Cost | Premium on Record 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.
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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