Contra Costa County property record for 1609 Calle Arroyo, Diablo, CA 94528
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 3.5 ba · 3,105 sqft · built 1964 |
| Lot Size | 0.505 acres (22,000 sqft) |
| Owner | Trust Name on Record |
| Last Sale | $375,000 (May 1996) |
| Tax Bill | $13,430 (2025) |
| Deeds & Mortgages | May 2018 Line of Credit |
| Flood Zone | Zone X (minimal risk) |
| APN | 195-141-021-4 |
| Primary APN | 195-141-021-4 |
|---|---|
| Alternative APN |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 3.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 10 Rooms |
| Stories | 2 Stories |
| Building Area | 3,105 sqft Living Area |
| 1st Floor Area | 2,433 sqft |
| 2nd Floor Area | 672 sqft |
| Year Built | Built 1964 |
|---|---|
| Effective Year Built | Effective 1997 |
| Lot Area | 22,000 sqft (0.505 acres) |
| Garage Type | Attached |
| Garage Area | 1,151 sqft |
| Parking Spaces | 4 Parking Spaces |
| Street Address | 1609 CALLE ARROYO |
|---|---|
| City | DIABLO |
| State | CA |
| Zip | 94528 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R20 |
| Legal Description | RECORD OF SURVEY 25 LSM 12 PCL B |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | CENTRAL CONTRA COSTA |
| Census Block Group | 1 |
| Census Block | 1000 |
| 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 | Trust Name on Record |
|---|---|
| Mailing Address | 1609 CALLE ARROYO, DIABLO, CA 94528 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Trust, Revocable Trust |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | May 10, 1996 · Amount on Record |
| Deed Sale | May 10, 1996 · Amount on Record |
| Deed Document Number | 199686874 |
| Prior Transfer Date | May 3, 1996 |
| Prior Transfer Doc | 0000086872 |
| Record Updated | Oct 29, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Property Address | 1609 CALLE ARROYO, DIABLO, CA 94528 |
| Transaction Type | Mortgage |
| Record Updated | Nov 3, 2022 |
| Name | Verified Name |
|---|
| Document Number | 0000068373 |
|---|---|
| Date | May 2, 2018 |
| Instrument | 2018-068373 |
| Name | COMERICA BANK CALIFORNIA |
|---|---|
| Type | Bank |
| Address | DALLAS, TX 75201 |
| Type | Line of Credit |
|---|---|
| Amount | Amount Recorded |
| 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 |
| Unified School District | San Ramon Valley Unified School District (KG - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $1,111,205 (+2%) Land $444,793 Building $666,412 | |
| 2025 | $13,430.00 (+2.75%) Homeowner's exemption | $1,089,418 (+4.04%) Land $436,072 Building $653,346 |
| 2023 | $13,070.00 (+0.88%) Homeowner's exemption | $1,047,117 Land $419,140 Building $627,977 |
| 2022 | $12,956.00 |
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 500 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 | Moderate above 63% of the US · lower than 61% of California |
|---|---|
| Wildfire Likelihood | 0.2% 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 130 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: Etheric Networks, Verizon.
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