Contra Costa County property record for 3100 Windsor Dr, Antioch, CA 94509
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 2 ba · 1,772 sqft · built 1964 |
| Lot Size | 0.145 acres (6,300 sqft) |
| Owner | Individual Name on File |
| Last Sale | $695,000 (Mar 2022) |
| Tax Bill | $7,115 (2025) |
| Deeds & Mortgages | Mar 2022 Sale & Mortgage |
| Flood Zone | Zone X (minimal risk) |
| APN | 068-292-011-1 |
| Primary APN | 068-292-011-1 |
|---|---|
| Alternative APN |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 7 Rooms |
| Stories | 1 Story |
| Building Area | 1,772 sqft Living Area |
| 1st Floor Area | 1,772 sqft |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1964 |
|---|---|
| Effective Year Built | Effective 1970 |
| Lot Area | 6,300 sqft (0.145 acres) |
| Garage Type | Attached |
| Garage Area | 480 sqft |
| Parking Spaces | 2 Parking Spaces |
| Cooling System | Central |
|---|---|
| Heating System | Forced Air with A/C |
| Street Address | 3100 WINDSOR DR |
|---|---|
| City | ANTIOCH |
| State | CA |
| Zip | 94509-5052 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R1 |
| Legal Description | TRACT 2445 LOT 47 |
| Legal Subdivision | WINDSOR HILLS |
| Legal Tract | 2445 |
| Legal Lot Number | 47 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | ANTIOCH-PITTSBURG |
| Census Block Group | 3 |
| Census Block | 3008 |
| Census Tract | 308001 |
3100 Windsor Dr is owned and occupied by an individual who bought it in March 2022.
Source: Contra Costa County records, as of July 14, 2026
| Owner of Record | Individual Name on File |
|---|---|
| Mailing Address | 3100 WINDSOR DR, ANTIOCH, CA 94509-5052 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Mar 21, 2022 · Amount on File |
| Deed Sale | Mar 21, 2022 · Amount on File |
| Deed Document Number | 202249275 |
| Prior Transfer Date | Jun 30, 1998 |
| Prior Transfer Doc | 0000216545 |
| Record Updated | Oct 29, 2026 |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | Mar 21, 2022 |
| Property Address | 3100 WINDSOR DR, ANTIOCH, CA 94509-5052 |
| Document Number | 0000049275 |
| Map Reference | MB 65 PG 8 |
| Instrument Date | Mar 2, 2022 |
| Instrument | 2022-049275 |
| Transaction Type | Transfer |
| Record Updated | Nov 3, 2022 |
| Title Company | OLD REPUBLIC TITLE, 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 |
|---|---|
| Address | 3100 WINDSOR DR, ANTIOCH, CA 94509-5052 |
| Document Number | 0000049276 |
|---|---|
| Date | Mar 21, 2022 |
| Instrument | 2022-049276 |
| Name | AMERICAN PACIFIC MORTGAGE CORP |
|---|---|
| Type | Mortgage Company |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 361 Months |
| Due | Apr 1, 2052 |
The 2025 property tax bill for 3100 Windsor Dr was $7,115.
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 | $585,000 (-) Land $218,849 Building $366,151 | |
| 2025 | $7,115.00 | $585,000 Land $218,850 Building $366,150 |
| 2023 | $7,121.00 (+399.37%) | $593,000 Land $222,000 Building $371,000 |
| 2022 | $1,426.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 3100 Windsor Dr 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.
The area around 3100 Windsor Dr has no burnable land within ember reach, so its wildfire risk is not rated.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Not rated no burnable land within 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 613 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 |
| T-Mobile Fixed Wireless | 100 / 20 |
| AT&T DSL · Fiber in parts of the area | 100 / 20 |
May also be available: Verizon.
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