Contra Costa County property record for 109 Prospect Ct, Oakley, CA 94561
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 3 ba · 3,476 sqft · built 2003 |
| Lot Size | 0.397 acres (17,305 sqft) |
| Owner | Company Name on File |
| Last Sale | $616,000 (Oct 2003) |
| Tax Bill | $11,372 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 041-310-007-4 |
| Primary APN | 041-310-007-4 |
|---|---|
| Alternative APN |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 3 Baths |
| Total Rooms | 10 Rooms |
| Stories | 1 Story |
| Building Area | 3,476 sqft Living Area |
| 1st Floor Area | 3,476 sqft |
| Year Built | Built 2003 |
|---|---|
| Effective Year Built | Effective 2003 |
| Lot Area | 17,305 sqft (0.397 acres) |
| Garage Type | Attached |
| Garage Area | 628 sqft |
| Parking Spaces | 2 Parking Spaces |
| Cooling System | Central |
|---|
| Street Address | 109 PROSPECT CT |
|---|---|
| City | OAKLEY |
| State | CA |
| Zip | 94561-3964 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | P-1 |
| Legal Description | T7358 L7 |
| Legal Tract | 7358 |
| Legal Lot Number | 7 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | EAST CONTRA COSTA |
| Census Block Group | 2 |
| Census Block | 2004 |
| Census Tract | 302013 |
Source: Contra Costa County records · APN 041-310-007-4
Assessment roll updated July 14, 2026 · Last verified July 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 | 109 PROSPECT CT, OAKLEY, CA 94561-3964 |
| Occupancy | Owner Occupied |
| Owner Type | Company |
| Vesting | Trust |
| Deed Names | Verified Name on Deed |
|---|---|
| Last Sale | Oct 29, 2003 · Amount on Record |
| Deed Sale | Oct 29, 2003 · Amount on Record |
| Prior Sale | Oct 17, 2003 · Amount on Record |
| Deed Document Number | 2003534997 |
| Last Transfer Date | May 07, 2004 |
| Transfer Doc | 0000183067 |
| Record Updated | Sep 20, 2026 |
Source: Contra Costa County records · Assessment roll updated July 14, 2026 · Last verified July 2026
| Type | Name |
|---|---|
| State | California |
| County | Contra Costa County |
| Municipality | Oakley City |
| Unified School District | Antioch Unified School District (KG - 12) |
Assessed value is set for property tax purposes and is not a market price estimate.
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $848,506 (+2%) Land $252,329 Building $596,177 | |
| 2025 | $11,372.00 (+4.19%) Homeowner's exemption | $831,870 (+4.04%) Land $247,382 Building $584,488 |
| 2023 | $10,915.00 (+1.87%) Homeowner's exemption | $799,570 Land $237,777 Building $561,793 |
| 2022 | $10,715.00 |
Source: FEMA National Flood Hazard Layer as of October 12, 2026 · USDA Forest Service Wildfire Risk to Communities as of 2024 · Last verified October 2026
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
| Wildfire Risk | Low lower than 98% of the US · lower than 98.4% of California |
|---|---|
| Wildfire Likelihood | Under 0.01% annual chance |
| Exposure | None beyond ember reach |
Values are read at the parcel center point; lenders make the official flood determination.
Source: FCC Broadband Data Collection as of December 31, 2025 · Last verified October 2026
| 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 |
Based on FCC filings for 187 locations within half a mile of this property.
Source: EPA Safe Drinking Water Information System as of 2026 Q3 · EPA water system boundaries as of March 2026 · Last verified October 2026
| Water System | DIABLO WATER DISTRICT serves 47,158 people |
|---|---|
| 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 as reported to EPA, not water tested at this address; lead at the tap also depends on the building's own pipes. The full violation and enforcement history is in the system's EPA record.
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