Contra Costa County property record for 4400 Main St, Oakley, CA 94561
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 1 ba · 1,597 sqft · built 1925 |
| Lot Size | 1.55 acres (67,953 sqft) |
| Owner | Company Name on Record |
| Tax Bill | $2,103 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 035-282-038-5 |
| Primary APN | 035-282-038-5 |
|---|---|
| Alternative APN |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 1 Bath |
| Total Rooms | 7 Rooms |
| Stories | 1 Story |
| Building Area | 1,597 sqft Living Area |
| 1st Floor Area | 1,597 sqft |
| Year Built | Built 1925 |
|---|---|
| Effective Year Built | Effective 1942 |
| Lot Area | 67,953 sqft |
| Garage Type | Attached |
| Garage Area | 836 sqft |
| Parking Spaces | 3 Parking Spaces |
| Street Address | 4400 MAIN ST |
|---|---|
| City | OAKLEY |
| State | CA |
| Zip | 94561-3215 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | OAKLEY PARK TR POR LOT 9 |
| Legal Subdivision | OAKLEY PARK |
| Legal Lot Number | 9 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | EAST CONTRA COSTA |
| Census Block Group | 2 |
| Census Block | 2000 |
| Census Tract | 302007 |
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 | Company Name on Record |
|---|---|
| Mailing Address | 4400 MAIN ST, OAKLEY, CA 94561-3215 |
| Occupancy | Owner Occupied |
| Owner Type | Company |
| Vesting | Trust |
| Deed Names | Name on Deed |
|---|---|
| Record Updated | Sep 20, 2026 |
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 | $103,970 (+2%) Land $23,610 Building $80,360 | |
| 2025 | $2,103.00 (+2.59%) Homeowner's exemption | $101,933 (+4.04%) Land $23,148 Building $78,785 |
| 2023 | $2,050.00 (+0.54%) Homeowner's exemption | $97,977 Land $22,250 Building $75,727 |
| 2022 | $2,039.00 |
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 AE, within 500 ft |
| Flood Insurance Requirement | Not required lenders may require it |
| Nearby Flood Policies | 8 in force |
| Nearby Flood Claims | 1 (1998) |
| Most Recent Claim | Feb 1998 · Severe Winter Storms And Flooding |
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 | Low lower than 64% of the US · lower than 79% of California |
|---|---|
| Wildfire Likelihood | 0.03% 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 | 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 626 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 |
| Verizon Fixed Wireless | 300 / 20 |
| T-Mobile Fixed Wireless | 100 / 20 |
| AT&T DSL · Fiber in parts of the area | 100 / 20 |
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