Contra Costa County property record for 4855 Knollcrest Dr, Antioch, CA 94531
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 2.5 ba · 1,723 sqft · built 1988 |
| Lot Size | 0.103 acres (4,500 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $272,000 (Apr 2002) |
| Tax Bill | $5,142 (2025) |
| Deeds & Mortgages | Feb 2020 Mortgage Nov 2021 Mortgage |
| Flood Zone | Zone X (minimal risk) |
| APN | 056-022-017 |
| Primary APN | 056-022-017 |
|---|---|
| Alternative APN |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 2.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 8 Rooms |
| Stories | 2 Stories |
| Building Area | 1,723 sqft Living Area |
| 1st Floor Area | 786 sqft |
| 2nd Floor Area | 937 sqft |
| Year Built | Built 1988 |
|---|---|
| Effective Year Built | Effective 1988 |
| Lot Area | 4,500 sqft (0.103 acres) |
| Garage Type | Attached |
| Garage Area | 494 sqft |
| Parking Spaces | 2 Parking Spaces |
| Street Address | 4855 KNOLLCREST DR |
|---|---|
| City | ANTIOCH |
| State | CA |
| Zip | 94531-7615 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | A-2 |
| Legal Description | T6800 L37 |
| Legal Subdivision | SUBDIVISION 6800 |
| Legal Tract | 6800 |
| Legal Lot Number | 37 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | ANTIOCH-PITTSBURG |
| Census Block Group | 1 |
| Census Block | 1012 |
| Census Tract | 355110 |
4855 Knollcrest Dr is owned and occupied by two individuals who acquired it in November 2021.
Source: Contra Costa County records, as of July 14, 2026
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 4855 KNOLLCREST DR, ANTIOCH, CA 94531-7615 |
| 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 |
|---|---|
| Feb 24, 2020 | Deed of Trust, Mortgage · Conventional Mortgage CARDINAL FINANCIAL COMPANY LP |
| Nov 22, 2021 | Intrafamily Transfer, Transfer · Conventional Mortgage UNITED WHOLESALE MORTGAGE |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Apr 19, 2002 · Amount on File |
| Deed Sale | Apr 19, 2002 · Amount on File |
| Deed Document Number | 2002139111 |
| Last Transfer Date | Nov 12, 2021 |
| Transfer Doc | 0000321967 |
| Record Updated | Oct 29, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Property Address | 4855 KNOLLCREST DR, ANTIOCH, CA 94531-7615 |
| Transaction Type | Mortgage |
| Record Updated | Nov 3, 2022 |
| Title Company | OLD REPUBLIC TITLE CO |
| Name | Verified Name |
|---|
| Document Number | 0000033754 |
|---|---|
| Date | Feb 24, 2020 |
| Instrument | 2020-033754 |
| Name | CARDINAL FINANCIAL COMPANY LP |
|---|---|
| Type | Mortgage Company |
| Address | CHARLOTTE, NC 28273 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 361 Months |
| Due | Mar 1, 2050 |
| Document Type | Intrafamily Transfer |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | Nov 22, 2021 |
| Property Address | 4855 KNOLLCREST DR, ANTIOCH, CA 94531-7615 |
| Document Number | 0000321967 |
| Map Reference | MB 310 PG 32 |
| Instrument Date | Nov 12, 2021 |
| Instrument | 2021-321967 |
| Transaction Type | Transfer |
| Record Updated | Nov 3, 2022 |
| Title Company | OLD REPUBLIC TITLE, OLD REPUBLIC TITLE COMPANY |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | Transfer Tax Exempt |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Joint Tenants |
| Address | 4855 KNOLLCREST DR, ANTIOCH, CA 94531-7615 |
| Document Number | 0000321968 |
|---|---|
| Date | Nov 22, 2021 |
| Instrument | 2021-321968 |
| Name | UNITED WHOLESALE MORTGAGE |
|---|---|
| Type | Mortgage Company |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 361 Months |
| Due | Dec 1, 2051 |
The 2025 property tax bill for 4855 Knollcrest Dr was $5,142.
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 | $409,838 (+2%) Land $134,472 Building $275,366 | |
| 2025 | $5,142.00 | $401,803 Land $131,836 Building $269,967 |
| 2023 | $4,890.00 (+1.54%) | $386,202 Land $126,717 Building $259,485 |
| 2022 | $4,816.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 4855 Knollcrest 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.
Wildfire risk around 4855 Knollcrest Dr is low, with less than 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 94% of the US · lower than 96% 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 | 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 797 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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