Contra Costa County property record for 4528 Hagar Ln, Oakley, CA 94561
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 3 ba · 2,664 sqft · built 2016 |
| Lot Size | 0.919 acres (40,031 sqft) |
| Owner | 2 Individual Names on Record |
| Last Sale | $1,100,000 (Aug 2022) |
| Tax Bill | $13,846 (2025) |
| Deeds & Mortgages | Nov 2022 Sale Aug 2022 Transfer + 1 more |
| Flood Zone | Zone X (minimal risk) |
| APN | 041-110-043-1 |
| Primary APN | 041-110-043-1 |
|---|---|
| Alternative APN |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 3 Baths |
| Total Rooms | 10 Rooms |
| Stories | 1 Story |
| Building Area | 2,664 sqft Living Area |
| 1st Floor Area | 2,664 sqft |
| Year Built | Built 2016 |
|---|---|
| Effective Year Built | Effective 2017 |
| Lot Area | 40,031 sqft (0.919 acres) |
| Garage Type | Attached |
| Garage Area | 576 sqft |
| Parking Spaces | 2 Parking Spaces |
| Street Address | 4528 HAGAR LN |
|---|---|
| City | OAKLEY |
| State | CA |
| Zip | 94561-4125 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | T199PM28 PCL B |
| Legal Tract | 199PM28 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | EAST CONTRA COSTA |
| Census Block Group | 1 |
| Census Block | 1010 |
| Census Tract | 302013 |
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 | 2 Individual Names on Record |
|---|---|
| Mailing Address | 4528 HAGAR LN, OAKLEY, CA 94561-4125 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Joint Tenants |
| Date | Document |
|---|---|
| Nov 17, 2022 | Grant Deed, Transfer |
| Aug 9, 2022 | Intrafamily Transfer, Transfer FIDELITY NATIONAL TITLE, FIDELITY NATIONAL TITLE CO |
| Aug 9, 2022 | Grant Deed, Transfer FIDELITY NATIONAL TITLE, FIDELITY NATIONAL TITLE CO |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Aug 9, 2022 · Amount on Record |
| Deed Sale | Aug 9, 2022 · Amount on Record |
| Prior Sale | Mar 31, 2016 · Amount on Record |
| Deed Document Number | 2022123915 |
| Record Updated | Oct 29, 2026 |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | Nov 17, 2022 |
| Property Address | 4528 HAGAR LN, OAKLEY, CA 94561-4125 |
| Document Number | 0000174687 |
| Map Reference | MB 199 PG 29 |
| Instrument Date | Nov 15, 2022 |
| Instrument | 2022-174687 |
| Transaction Type | Transfer |
| Record Updated | Nov 24, 2022 |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | Transfer Tax Exempt |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Joint Tenants |
| Address | 4528 HAGAR LN, OAKLEY, CA 94561-4125 |
| Document Type | Intrafamily Transfer |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | Aug 9, 2022 |
| Property Address | 4528 HAGAR LN, OAKLEY, CA 94561-4125 |
| Document Number | 0000123916 |
| Map Reference | MB 199 PG 29 |
| Instrument Date | Aug 5, 2022 |
| Instrument | 2022-123916 |
| Transaction Type | Transfer |
| Record Updated | Nov 3, 2022 |
| Title Company | FIDELITY NATIONAL TITLE, FIDELITY NATIONAL TITLE CO |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | Transfer Tax Exempt |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Address | 4913 UNION MINE CT, ANTIOCH, CA 94531-8021 |
| Investor | Possibly a Property Investor |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | Aug 9, 2022 |
| Property Address | 4528 HAGAR LN, OAKLEY, CA 94561-4125 |
| Document Number | 0000123915 |
| Map Reference | MB 199 PG 29 |
| Instrument Date | Jul 21, 2022 |
| Instrument | 2022-123915 |
| Transaction Type | Transfer |
| Record Updated | Nov 3, 2022 |
| Title Company | FIDELITY NATIONAL TITLE, FIDELITY NATIONAL TITLE CO |
| Amount | Amount Recorded |
|---|---|
| Tax | $0.00 |
| Amount Accuracy | Rounded by County |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Address | 4913 UNION MINE CT, ANTIOCH, CA 94531-8021 |
| Investor | Possibly a Property Investor |
Source: Contra Costa County assessment roll, as of July 14, 2026
| Type | Name |
|---|---|
| State | California |
| County | Contra Costa County |
| Municipality | Oakley City |
| Unified School District | Antioch Unified School District (KG - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $1,187,327 (+3.75%) Land $382,034 Building $805,293 | |
| 2025 | $13,846.00 (+4.13%) | $1,144,440 (+4.04%) Land $374,544 Building $769,896 |
| 2023 | $13,297.00 (+80.74%) | $1,100,000 Land $360,000 Building $740,000 |
| 2022 | $7,357.00 |
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 98% of the US · lower than 98.4% of California |
|---|---|
| Wildfire Likelihood | Under 0.01% 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 491 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 |
| AT&T DSL · Fiber in parts of the area | 100 / 20 |
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