Contra Costa County property record for 4529 Half Dome St, Antioch, CA 94531
| Property Type | Single Family Home |
|---|---|
| Details | 5 bd · 4.5 ba · 3,859 sqft · built 2014 |
| Lot Size | 0.145 acres (6,303 sqft) |
| Owner | 2 Individual Names on Record |
| Last Sale | $536,000 (Sep 2014) |
| Tax Bill | $7,988 (2025) |
| Deeds & Mortgages | Aug 2020 Mortgage |
| Flood Zone | Zone X (minimal risk) |
| APN | 052-550-003-9 |
| Primary APN | 052-550-003-9 |
|---|---|
| Alternative APN |
|
| Bedrooms | 5 Beds |
|---|---|
| Full Baths | 4.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 13 Rooms |
| Stories | 2 Stories |
| Building Area | 3,859 sqft Living Area |
| 1st Floor Area | 2,095 sqft |
| 2nd Floor Area | 1,764 sqft |
| Year Built | Built 2014 |
|---|---|
| Effective Year Built | Effective 2014 |
| Lot Area | 6,303 sqft (0.145 acres) |
| Garage Type | Attached |
| Garage Area | 799 sqft |
| Parking Spaces | 3 Parking Spaces |
| Street Address | 4529 HALF DOME ST |
|---|---|
| City | ANTIOCH |
| State | CA |
| Zip | 94531-7189 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | T8851 L277 |
| Legal Subdivision | NELSON RANCH 3 SUB 8851 |
| Legal Tract | 8851 |
| Legal Lot Number | 277 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | ANTIOCH-PITTSBURG |
| Census Block Group | 1 |
| Census Block | 1017 |
| Census Tract | 308002 |
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 | 20570 PROSPECT RD, SARATOGA, CA 95070-3019 |
| Owner Type | Individual |
| Vesting | Tenants in Common |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Sep 25, 2014 · Amount on Record |
| Deed Sale | Sep 25, 2014 · Amount on Record |
| Deed Document Number | 2014163568 |
| Record Updated | Sep 20, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Property Address | 4529 HALF DOME ST, ANTIOCH, CA 94531-7189 |
| Document Number | 0000165032 |
| Instrument Date | Aug 3, 2020 |
| Transaction Type | Mortgage |
| Record Updated | Aug 26, 2020 |
| Title Company | NOT AVAILABLE |
| Additional |
|
|---|
| Name | Verified Name |
|---|---|
| Relationship | Company |
| Address | 90 MATAWAN RD #5TH MATAWAN NJ 077472623, 5TH, MATAWAN, NJ 07747-2623 |
| Investor | Possibly a Property Investor |
| Document Number | 0000165032 |
|---|---|
| Date | Aug 7, 2020 |
| Instrument | 165032 |
| Name | WILMINGTON TR NA |
|---|---|
| Address | WILMINGTON, DE 19890-1600 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 60 Months |
| Due | Aug 6, 2025 |
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 | $656,819 (+2%) Land $134,842 Building $521,977 | |
| 2025 | $7,988.00 (+4.77%) | $643,942 (+4.04%) Land $132,199 Building $511,743 |
| 2023 | $7,624.00 (+1.59%) | $618,938 Land $127,066 Building $491,872 |
| 2022 | $7,505.00 |
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 |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
| Nearby Flood Policies | 2 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 99.8% of the US · lower than 99.8% 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 550 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 |
May also be available: AT&T.
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