Contra Costa County property record for 431 Hill Ave, Oakley, CA 94561
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 1 ba · 1,025 sqft · built 1950 |
| Lot Size | 1.33 acres (58,370 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $113,500 (Jul 1995) |
| Tax Bill | $2,105 (2025) |
| Deeds & Mortgages | Oct 2026 Sale |
| Flood Zone | Zone X (minimal risk) |
| APN | 033-080-019-4 |
| Primary APN | 033-080-019-4 |
|---|---|
| Alternative APN |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 1 Bath |
| Total Rooms | 6 Rooms |
| Stories | 1 Story |
| Building Area | 1,025 sqft Living Area |
| 1st Floor Area | 1,025 sqft |
| Year Built | Built 1950 |
|---|---|
| Effective Year Built | Effective 1950 |
| Lot Area | 58,370 sqft |
| Garage Type | Attached |
| Garage Area | 294 sqft |
| Parking Spaces | 1 Parking Space |
| Street Address | 431 HILL AVE |
|---|---|
| City | OAKLEY |
| State | CA |
| Zip | 94561-2711 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | PARCEL MAP 6 PG 47 PCL A EX 1/2 MR 1.34 AC |
| Legal Tract | 6PM47 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | EAST CONTRA COSTA |
| Census Block Group | 1 |
| Census Block | 1010 |
| Census Tract | 302012 |
431 Hill Ave is owned and occupied by two individuals who acquired it in October 2026.
Source: Contra Costa County records, as of October 22, 2026
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | PO BOX 1141, OAKLEY, CA 94561-1141 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Joint Tenants |
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 | 2 Names on Deed |
|---|---|
| Last Sale | Jul 6, 1995 · Amount on File |
| Deed Sale | Jul 6, 1995 · Amount on File |
| Prior Sale | Feb 15, 1994 · Amount on File |
| Deed Document Number | 1995106484 |
| Last Transfer Date | Oct 9, 2026 |
| Transfer Doc | 0000111078 |
| Record Updated | Oct 29, 2026 |
| Document Type | Affidavit |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | Oct 15, 2026 |
| Property Address | 431 HILL AVE, OAKLEY, CA 94561-2711 |
| Document Number | 0000111078 |
| Instrument Date | Oct 9, 2026 |
| Instrument | 2026111078 |
| Transaction Type | Transfer |
| Record Updated | Oct 22, 2026 |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | Full Amount Stated |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Address | 431 HILL AVE, OAKLEY, CA 94561-2711 |
The 2025 property tax bill for 431 Hill Ave was $2,105 with a homeowner's exemption.
Source: Contra Costa County assessment roll, as of July 14, 2026
| Type | Name |
|---|---|
| State | California |
| County | Contra Costa County |
| Municipality | Oakley City |
| Secondary School District | Liberty Union High School District (09 - 12) |
| Elementary School District | Oakley Union Elementary School District (KG - 08) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $191,612 (+2%) Land $117,241 Building $74,371 | |
| 2025 | $2,105.00 Homeowner's exemption | $187,856 Land $114,943 Building $72,913 |
| 2023 | $2,041.00 (+1.04%) Homeowner's exemption | $180,564 Land $110,481 Building $70,083 |
| 2022 | $2,020.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 431 Hill Ave 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 |
| 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 431 Hill Ave is low, with a 0.04% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Low lower than 66% of the US · lower than 80% of California |
|---|---|
| Wildfire Likelihood | 0.04% 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 | DIABLO WATER DISTRICT serves 47,158 people · EPA ID CA0710007 |
|---|---|
| Water Source | Purchased surface water from RANDALL-BOLD WATER TREATMENT PLANT |
| Last State Inspection | Jan 2024 |
| Also Mapped Here | CONTRA COSTA WATER DISTRICT |
| Lead | 2 ppb (2020–2022) 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.
Source: FCC Broadband Data Collection, based on 637 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| AT&T Fiber | 5,000 / 5,000 |
| Xfinity Cable | 2,000 / 2,000 |
| Unwired Fixed Wireless | 300 / 25 |
| Verizon Fixed Wireless | 300 / 20 |
May also be available: T-Mobile.
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