Contra Costa County property record for 5427 Gallier Loop, Antioch, CA 94531
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 3 ba · 2,339 sqft · built 2020 |
| Lot Size | 0.104 acres (4,523 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $641,500 (May 2021) |
| Tax Bill | $10,355 (2025) |
| Deeds & Mortgages | May 2021 Sale |
| Flood Zone | Zone X (minimal risk) |
| APN | 056-490-042-1 |
| Primary APN | 056-490-042-1 |
|---|---|
| Alternative APN |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 3 Baths |
| Total Rooms | 8 Rooms |
| Stories | 2 Stories |
| Building Area | 2,339 sqft Living Area |
| 1st Floor Area | 1,092 sqft |
| 2nd Floor Area | 1,247 sqft |
| Year Built | Built 2020 |
|---|---|
| Effective Year Built | Effective 2021 |
| Lot Area | 4,523 sqft (0.104 acres) |
| Garage Type | Attached |
| Garage Area | 452 sqft |
| Parking Spaces | 2 Parking Spaces |
| Street Address | 5427 GALLIER LOOP |
|---|---|
| City | ANTIOCH |
| State | CA |
| Zip | 94531-8714 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | T9385 L110 |
| Legal Subdivision | SUBDIVISION 9385 |
| Legal Tract | 9385 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | EAST CONTRA COSTA |
| Census Block Group | 2 |
| Census Block | 2011 |
| Census Tract | 303207 |
5427 Gallier Loop is owned by two individuals who bought it in May 2021.
Source: Contra Costa County records, as of July 14, 2026
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 5429 MAZANT LOOP, ANTIOCH, CA 94531-8706 |
| Owner Type | Individual |
| Vesting | Community Property |
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 | 2 Names on Deed |
|---|---|
| Last Sale | May 12, 2021 · Amount on File |
| Deed Sale | May 12, 2021 · Amount on File |
| Deed Document Number | 2021142240 |
| Record Updated | Sep 20, 2026 |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | May 12, 2021 |
| Property Address | 5427 GALLIER LOOP, ANTIOCH, CA 94531-8714 |
| Document Number | 0000142240 |
| Map Reference | MB 538 PG 1-12 |
| Instrument Date | May 12, 2021 |
| Instrument | 2021-142240 |
| Transaction Type | Subdivision Related Transfer |
| Record Updated | Nov 3, 2022 |
| Title Company | FIRSTAMERICAN TITLE COMPANY, FIRST AMERICAN TITLE COMPANY |
| Amount | Amount on Record |
|---|---|
| Tax | $0.00 |
| Amount Accuracy | Rounded by County |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Community Property with Right of Survivorship |
| Address | 5427 GALLIER LOOP, ANTIOCH, CA 94531-8714 |
The 2025 property tax bill for 5427 Gallier Loop was $10,355.
Source: Contra Costa County assessment roll, as of July 14, 2026
| Type | Name |
|---|---|
| State | California |
| County | Contra Costa County |
| Municipality | Antioch City |
| Elementary School District | Brentwood Union Elementary School District (KG - 08) |
| Secondary School District | Liberty Union High School District (09 - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $707,933 (+2%) Land $220,814 Building $487,119 | |
| 2025 | $10,355.00 | $694,053 Land $216,485 Building $477,568 |
| 2023 | $10,004.00 (+1.7%) | $667,104 Land $208,080 Building $459,024 |
| 2022 | $9,837.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 5427 Gallier Loop in Zone X, an area of minimal flood risk.
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.
Wildfire risk around 5427 Gallier Loop is low, with a 0.03% annual chance of wildfire.
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 | 0.03% annual chance |
| Exposure | Indirect 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 | BRENTWOOD serves 64,513 people · EPA ID CA0710004 |
|---|---|
| Water Source | Purchased surface water from several systems |
| Last State Inspection | Oct 2024 |
| Also Mapped Here | CITY OF ANTIOCH, CONTRA COSTA WATER DISTRICT |
| 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 205 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| AT&T Fiber | 5,000 / 5,000 |
| Xfinity Cable | 2,000 / 250 |
| Unwired Fixed Wireless | 300 / 25 |
| Verizon Fixed Wireless | 300 / 20 |
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