Contra Costa County property record for 4775 Duarte Ave, Oakley, CA 94561
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 2.5 ba · 1,703 sqft · built 1989 |
| Lot Size | 0.138 acres (6,012 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $435,000 (May 2017) |
| Tax Bill | $6,558 (2025) |
| Deeds & Mortgages | Jan 2021 Mortgage Feb 2020 Mortgage + 1 more |
| Flood Zone | Zone X (minimal risk) |
| APN | 035-681-005-1 |
| Primary APN | 035-681-005-1 |
|---|---|
| Alternative APN |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 2.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 9 Rooms |
| Stories | 2 Stories |
| Building Area | 1,703 sqft Living Area |
| 1st Floor Area | 813 sqft |
| 2nd Floor Area | 890 sqft |
| Year Built | Built 1989 |
|---|---|
| Effective Year Built | Effective 1995 |
| Lot Area | 6,012 sqft (0.138 acres) |
| Garage Type | Attached |
| Garage Area | 451 sqft |
| Parking Spaces | 2 Parking Spaces |
| Cooling System | Central |
|---|---|
| Heating System | Central |
| Street Address | 4775 DUARTE AVE |
|---|---|
| City | OAKLEY |
| State | CA |
| Zip | 94561-2039 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | T6865 L23 |
| Legal Subdivision | SUBDIVISION 6865 |
| Legal Tract | 6865 |
| Legal Lot Number | 23 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | EAST CONTRA COSTA |
| Census Block Group | 4 |
| Census Block | 4000 |
| Census Tract | 302005 |
4775 Duarte Ave is owned and occupied by two individuals who bought it in May 2017.
Source: Contra Costa County records, as of July 14, 2026
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 4775 DUARTE AVE, OAKLEY, CA 94561-2039 |
| 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.
| Date | Document |
|---|---|
| Jan 15, 2021 | Deed of Trust, Mortgage · Conventional Mortgage AMERICAN PACIFIC MORTGAGE CORP |
| Feb 28, 2020 | Deed of Trust, Mortgage · Conventional Mortgage SUMMIT FUNDING INC |
| May 23, 2017 | Grant Deed, Transfer · FHA Mortgage SUMMIT FUNDING INC |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | May 23, 2017 · Amount on File |
| Deed Sale | May 23, 2017 · Amount on File |
| Prior Sale | Aug 12, 2013 · Amount on File |
| Deed Document Number | 201789421 |
| Prior Transfer Date | Jan 30, 2014 |
| Prior Transfer Doc | 0000020109 |
| Record Updated | Oct 29, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Property Address | 4775 DUARTE AVE, OAKLEY, CA 94561-2039 |
| Transaction Type | Mortgage |
| Record Updated | Nov 3, 2022 |
| Title Company | WFG NATIONAL TITLE COMPANY |
| Name | Verified Name |
|---|---|
| Address | 4775 DUARTE AVE, OAKLEY, CA 94561-2039 |
| Document Number | 0000014092 |
|---|---|
| Date | Jan 15, 2021 |
| Instrument | 2021-014092 |
| Name | AMERICAN PACIFIC MORTGAGE CORP |
|---|---|
| Type | Mortgage Company |
| Address | ROSEVILLE, CA 95661 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 361 Months |
| Due | Feb 1, 2051 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Property Address | 4775 DUARTE AVE, OAKLEY, CA 94561-2039 |
| Transaction Type | Mortgage |
| Record Updated | Nov 3, 2022 |
| Title Company | OLD REPUBLIC TITLE CO |
| Name | Verified Name |
|---|
| Document Number | 0000038239 |
|---|---|
| Date | Feb 28, 2020 |
| Instrument | 2020-038239 |
| Name | SUMMIT FUNDING INC |
|---|---|
| Type | Mortgage Company |
| Address | SACRAMENTO, CA 95815 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 361 Months |
| Due | Mar 2, 2050 |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | May 23, 2017 |
| Property Address | 4775 DUARTE AVE, OAKLEY, CA 94561-2039 |
| Document Number | 0000089421 |
| Map Reference | MB318 PG10 |
| Instrument Date | May 17, 2017 |
| Instrument | 2017-089421 |
| Transaction Type | Transfer |
| Record Updated | Nov 3, 2022 |
| Title Company | OLD REPUBLIC TITLE COMPANY |
| Amount | Amount on Record |
|---|---|
| Downpayment | Downpayment on Record |
| Loan-to-Value (LTV) | LTV on Record |
| Tax | $0.00 |
| Amount Accuracy | Rounded by County |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Joint Tenants |
| Address | 4775 DUARTE AVE, OAKLEY, CA 94561-2039 |
| Document Number | 0000089422 |
|---|---|
| Date | May 23, 2017 |
| Instrument | 2017-089422 |
| Name | SUMMIT FUNDING INC |
|---|---|
| Type | Mortgage Company |
| Type | FHA Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 361 Months |
| Due | Jun 1, 2047 |
The 2025 property tax bill for 4775 Duarte Ave was $6,558.
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 | $514,945 (+2%) Land $201,241 Building $313,704 | |
| 2025 | $6,558.00 | $504,849 Land $197,296 Building $307,553 |
| 2023 | $6,369.00 (+0.82%) | $485,247 Land $189,636 Building $295,611 |
| 2022 | $6,317.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 4775 Duarte Ave in Zone X, an area of minimal flood risk.
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.
Wildfire risk around 4775 Duarte Ave is low, with a 0.01% annual chance of wildfire.
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 |
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 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 Fixed Wireless | 100 / 20 |
| AT&T DSL · Fiber in parts of the area | 100 / 20 |
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