Contra Costa County property record for 4785 Duarte Ave, Oakley, CA 94561
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 2.5 ba · 1,461 sqft · built 1988 |
| Lot Size | 0.13 acres (5,642 sqft) |
| Owner | Company Name on File |
| Last Sale | $210,000 (Sep 2008) |
| Tax Bill | $4,006 (2025) |
| Deeds & Mortgages | Aug 2022 Transfer |
| Flood Zone | Zone X (minimal risk) |
| APN | 035-681-006-9 |
| Primary APN | 035-681-006-9 |
|---|---|
| Alternative APN |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 2.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 7 Rooms |
| Stories | 2 Stories |
| Building Area | 1,461 sqft Living Area |
| Gross Area | 2,063 sqft |
| 1st Floor Area | 768 sqft |
| 2nd Floor Area | 693 sqft |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1988 |
|---|---|
| Effective Year Built | Effective 1989 |
| Architectural Style | Contemporary |
| Exterior Material | Wood |
| Roof Material | Composition Shingle |
| Lot Area | 5,642 sqft (0.13 acres) |
| Garage Type | Attached |
| Garage Area | 602 sqft |
| Parking Spaces | 2 Parking Spaces |
| Cooling System | Central |
|---|---|
| Heating System | Forced Air with A/C |
| Heating Fuel | Gas |
| Sewer | Municipal |
| Water Source | Commercial |
| Street Address | 4785 DUARTE AVE |
|---|---|
| City | OAKLEY |
| State | CA |
| Zip | 94561-2039 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | T6865 L24 |
| Legal Subdivision | SUBDIVISION 6865 |
| Legal Tract | 6865 |
| Legal Lot Number | 24 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | EAST CONTRA COSTA |
| Census Block Group | 4 |
| Census Block | 4000 |
| Census Tract | 302005 |
Source: Contra Costa County assessment roll, 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 File |
|---|---|
| Mailing Address | PO BOX 48, KNIGHTSEN, CA 94548-0048 |
| Owner Type | Company |
| Vesting | Trust |
| Deed Names | Verified Name on Deed |
|---|---|
| Last Sale | Sep 15, 2008 · Amount on Record |
| Deed Sale | Sep 15, 2008 · Amount on Record |
| Prior Sale | May 12, 2008 · Amount on Record |
| Deed Document Number | 2008204747 |
| Last Transfer Date | Aug 10, 2022 |
| Transfer Doc | 0000128211 |
| Record Updated | Sep 20, 2026 |
| Document Type | Intrafamily Transfer |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | Aug 18, 2022 |
| Property Address | 4785 DUARTE AVE, OAKLEY, CA 94561-2039 |
| Document Number | 0000128211 |
| Map Reference | MB 318 PG 10 |
| Instrument Date | Aug 10, 2022 |
| Instrument | 2022-128211 |
| Transaction Type | Transfer |
| Record Updated | Jun 7, 2023 |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | Transfer Tax Exempt |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Family Trust |
| Address | 418 COW POKE LN, KNIGHTSEN, CA 94548 |
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 | $275,816 (+2%) Land $65,666 Building $210,150 | |
| 2025 | $4,006.00 (+2.82%) | $270,409 (+4.04%) Land $64,379 Building $206,030 |
| 2023 | $3,896.00 (+0.72%) | $259,911 Land $61,880 Building $198,031 |
| 2022 | $3,868.00 |
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
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
Values are read at the parcel center point; lenders make the official flood determination.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Low lower than 80% of the US · lower than 88% of California |
|---|---|
| Wildfire Likelihood | 0.01% annual chance |
| Exposure | Direct burnable vegetation at the parcel |
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 645 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 USA Fixed Wireless | 100 / 20 |
| AT&T DSL · Fiber in parts of the area | 100 / 20 |
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