Contra Costa County property record for 4901 Willowbrook Way, Antioch, CA 94531
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 2.5 ba · 1,652 sqft · built 1995 |
| Lot Size | 0.29 acres (12,632 sqft) |
| Owner | Company Name on Record |
| Last Sale | $251,500 (Feb 2013) |
| Tax Bill | $5,313 (2025) |
| Deeds & Mortgages | Nov 2023 Sale Dec 2017 Transfer |
| Flood Zone | Zone X (minimal risk) |
| APN | 056-110-141-1 |
| Primary APN | 056-110-141-1 |
|---|---|
| Alternative APN |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 2.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 9 Rooms |
| Stories | 2 Stories |
| Building Area | 1,652 sqft Living Area |
| 1st Floor Area | 768 sqft |
| 2nd Floor Area | 884 sqft |
| Year Built | Built 1995 |
|---|---|
| Effective Year Built | Effective 1995 |
| Lot Area | 12,632 sqft (0.29 acres) |
| Garage Type | Attached |
| Garage Area | 426 sqft |
| Parking Spaces | 2 Parking Spaces |
| Cooling System | Central |
|---|
| Street Address | 4901 WILLOWBROOK WAY |
|---|---|
| City | ANTIOCH |
| State | CA |
| Zip | 94531-8174 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | T7125 L383 & POR VACATED RD |
| Legal Subdivision | SUBDIVISION 7125 |
| Legal Tract | 7125 |
| Legal Lot Number | 383 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | EAST CONTRA COSTA |
| Census Block Group | 1 |
| Census Block | 1019 |
| Census Tract | 302009 |
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 | 345 PARK AVE, NEW YORK, NY 10154-0023 |
| Owner Type | Company |
| Date | Document |
|---|---|
| Nov 30, 2023 | Grant Deed, Transfer OS NATIONAL LLC |
| Dec 21, 2017 | Quit Claim Deed, Transfer OS NATIONAL LLC |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Feb 28, 2013 · Amount on Record |
| Deed Sale | Feb 28, 2013 · Amount on Record |
| Prior Sale | Aug 23, 2011 · Amount on Record |
| Deed Document Number | 201353560 |
| Prior Transfer Date | Dec 21, 2006 |
| Prior Transfer Doc | 0000005145 |
| Record Updated | Sep 20, 2026 |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | Nov 30, 2023 |
| Property Address | 4901 WILLOWBROOK WAY, ANTIOCH, CA 94531-8174 |
| Document Number | 0000126997 |
| Map Reference | MB 36 PG 49 |
| Instrument Date | Nov 29, 2023 |
| Instrument | 2023-126997 |
| Transaction Type | Transfer |
| Record Updated | Dec 13, 2023 |
| Title Company | OS NATIONAL LLC |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | Transfer Tax Exempt |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Address | 15771 RED HILL AVE STE 100, 100, TUSTIN, CA 92780-7333 |
| Investor | Possibly a Property Investor |
| Document Type | Quit Claim Deed |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | Dec 21, 2017 |
| Property Address | 4901 WILLOWBROOK WAY, ANTIOCH, CA 94531-8174 |
| Document Number | 0000239760 |
| Instrument Date | Dec 20, 2017 |
| Instrument | 239760 |
| Transaction Type | Transfer |
| Record Updated | Jan 3, 2018 |
| Title Company | OS NATIONAL LLC |
| Tax | $0.00 |
|---|---|
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Company |
| Address | 1508 BROOKHOLLOW DR SANTA ANA CA 927055433, SANTA ANA, CA 92705-5433 |
Source: Contra Costa County assessment roll, as of July 14, 2026
| Type | Name |
|---|---|
| State | California |
| County | Contra Costa County |
| Municipality | Antioch City |
| Unified School District | Antioch Unified School District (KG - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $603,432 (+38.65%) Land $208,080 Building $395,352 | |
| 2025 | $5,313.00 (+6.13%) | $435,213 (+4.04%) Land $150,874 Building $284,339 |
| 2023 | $5,006.00 (+1.54%) | $418,315 Land $145,016 Building $273,299 |
| 2022 | $4,930.00 |
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 A, within 500 ft |
| Flood Insurance Requirement | Not required lenders may require it |
| Nearby Flood Policies | 1 in force |
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 80% of the US · lower than 88% of California |
|---|---|
| Wildfire Likelihood | 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 | CITY OF ANTIOCH serves 116,781 people · EPA ID CA0710001 |
|---|---|
| Water Source | Surface water |
| Last State Inspection | Jan 2024 |
| Lead | Under 1 ppb (2022–2024) 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 611 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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