Contra Costa County property record for 25 Palma Vista, Diablo, CA 94528
| Property Type | Single Family Home |
|---|---|
| Details | 5 bd · 5.5 ba · 5,145 sqft · built 2016 |
| Lot Size | 0.574 acres (25,000 sqft) |
| Owner | 2 Company Names on File |
| Last Sale | $5,800,000 (Mar 2025) |
| Tax Bill | $29,441 (2025) |
| Deeds & Mortgages | Oct 2021 Mortgage Feb 2018 Mortgage |
| Flood Zone | Zone X (minimal risk) |
| APN | 195-280-031-4 |
| Primary APN | 195-280-031-4 |
|---|---|
| Alternative APN |
|
| Bedrooms | 5 Beds |
|---|---|
| Full Baths | 5.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 13 Rooms |
| Stories | 2 Stories |
| Building Area | 5,145 sqft Living Area |
| 1st Floor Area | 3,678 sqft |
| 2nd Floor Area | 1,467 sqft |
| Year Built | Built 2016 |
|---|---|
| Effective Year Built | Effective 2017 |
| Lot Area | 25,000 sqft (0.574 acres) |
| Garage Type | Attached |
| Garage Area | 798 sqft |
| Parking Spaces | 3 Parking Spaces |
| Heating System | Central |
|---|
| Street Address | 25 PALMA VIS |
|---|---|
| City | DIABLO |
| State | CA |
| Zip | 94528 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R20 |
| Legal Description | MT DIABLO EST PARK #1 LOT 183 & POR 184 |
| Legal Subdivision | MOUNT DIABLO ESTATE PARK 01 |
| Legal Lot Number | 183 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | CENTRAL CONTRA COSTA |
| Census Block Group | 1 |
| Census Block | 1019 |
| Census Tract | 346205 |
Source: Contra Costa County records · APN 195-280-031-4
Assessment roll updated July 14, 2026 · Last verified August 2026
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | 2 Company Names on File |
|---|---|
| Mailing Address | 25 PALMA VIS, DIABLO, CA 94528 |
| Occupancy | Owner Occupied |
| Owner Type | Company |
| Vesting | Life Tenant |
| Date | Document |
|---|---|
| Oct 29, 2021 | Deed of Trust, Mortgage FREMONT BANK |
| Feb 16, 2018 | Deed of Trust, Mortgage · ARM FREMONT BANK |
| Deed Names | 2 Verified Names on Deed |
|---|---|
| Last Sale | Mar 05, 2025 · Amount on Record |
| Deed Sale | Mar 05, 2025 · Amount on Record |
| Prior Sale | Jan 30, 2007 · Amount on Record |
| Deed Document Number | 202520185 |
| Prior Transfer Date | Feb 27, 2025 |
| Prior Transfer Doc | 0000020184 |
| Record Updated | Sep 20, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Property Address | 25 PALMA VIS, DIABLO, CA 94528 |
| Transaction Type | Mortgage |
| Record Updated | Jun 08, 2026 |
| Title Company | FIDELITY NATIONAL TITLE |
| Name | Verified Name |
|---|---|
| Address | 25 PALMA VISTA, DIABLO, CA 94528 |
| Document Number | 0000303972 |
|---|---|
| Date | Oct 29, 2021 |
| Instrument | 2021-303972 |
| Name | FREMONT BANK |
|---|---|
| Type | Bank |
| Address | LIVERMORE, CA 94551 |
| Amount | Amount Recorded |
|---|---|
| Term | 361 Months |
| Due | Nov 01, 2051 |
| Rate Type | Adjustable Rate |
|---|---|
| Rate | 2.5% |
| Type Change Date | Nov 01, 2026 |
| Change Frequency | 6 Months |
| Min Rate At Change | 3.37% |
| Max Rate At Change | 4.5% |
| Index | Other |
| Max Rate | 7.5% |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Property Address | 25 PALMA VIS, DIABLO, CA 94528 |
| Transaction Type | Mortgage |
| Record Updated | Nov 03, 2022 |
| Title Company | FIDELITY NATIONAL TITLE CONC |
| Name | Verified Name |
|---|
| Document Number | 0000024970 |
|---|---|
| Date | Feb 16, 2018 |
| Instrument | 2018-024970 |
| Name | FREMONT BANK |
|---|---|
| Type | Bank |
| Address | LIVERMORE, CA 94551 |
| Type | ARM |
|---|---|
| Amount | Amount Recorded |
| Term | 361 Months |
| Due | Mar 01, 2048 |
| Rate Type | Adjustable Rate |
|---|---|
| Rate | 4% |
| Type Change Date | Mar 01, 2023 |
| Change Frequency | Annually |
| Min Rate At Change | 2.87% |
| Max Rate At Change | 9% |
| Index | 1-Year LIBOR |
| Max Rate | 9% |
Source: Contra Costa County records · Assessment roll updated July 14, 2026 · Last verified August 2026
| Type | Name |
|---|---|
| State | California |
| County | Contra Costa County |
| Unified School District | San Ramon Valley Unified School District (KG - 12) |
Assessed value and assessed market value are set for property tax purposes, not market price estimates; both are a fraction of this property's market value.
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $5,916,000 (+131.62%) Land $3,876,000 Building $2,040,000 | |
| 2025 | $29,441.00 (+3.67%) | $2,554,166 (+4.04%) Land $1,339,784 Building $1,214,382 |
| 2023 | $28,398.00 (+0.8%) | $2,454,986 Land $1,287,759 Building $1,167,227 |
| 2022 | $28,172.00 |
Source: FEMA National Flood Hazard Layer as of October 12, 2026 · FEMA NFIP claims and policies as of September 2026 · USDA Forest Service Wildfire Risk to Communities as of 2024 · Last verified October 2026
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| 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 |
| Wildfire Risk | High above 76% of the US · above 52% of California |
|---|---|
| Wildfire Likelihood | 0.5% annual chance |
| Exposure | Indirect within ember reach |
| Adjoins Burnable Land | Yes |
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: FCC Broadband Data Collection as of December 31, 2025 · Last verified October 2026
| Provider | Max Down / Up (Mbps) |
|---|---|
| Xfinity Cable | 2,000 / 250 |
| Unwired Fixed Wireless | 300 / 25 |
| T-Mobile USA Fixed Wireless | 100 / 20 |
| AT&T DSL | 100 / 20 |
May also be available: Verizon.
Based on FCC filings for 153 locations within half a mile of this property.
Source: EPA Safe Drinking Water Information System as of 2026 Q3 · EPA water system boundaries as of March 2026 · Last verified October 2026
| Water System | EAST BAY MUD serves 1,468,000 people |
|---|---|
| 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 as reported to EPA, 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. The full violation and enforcement history is in the system's EPA record.
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