Contra Costa County property record for 5577 Monaghan Way, Antioch, CA 94531
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 2 ba · 2,019 sqft · built 2012 |
| Lot Size | 0.148 acres (6,427 sqft) |
| Owner | Individual Name on Record |
| Last Sale | $310,500 (Jun 2012) |
| Tax Bill | $5,181 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 056-440-025-7 |
| Primary APN | 056-440-025-7 |
|---|---|
| Alternative APN |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 7 Rooms |
| Stories | 1 Story |
| Building Area | 2,019 sqft Living Area |
| 1st Floor Area | 2,019 sqft |
| Year Built | Built 2012 |
|---|---|
| Effective Year Built | Effective 2012 |
| Lot Area | 6,427 sqft (0.148 acres) |
| Garage Type | Attached |
| Garage Area | 453 sqft |
| Parking Spaces | 2 Parking Spaces |
| Street Address | 5577 MONAGHAN WAY |
|---|---|
| City | ANTIOCH |
| State | CA |
| Zip | 94531-8678 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | T8951 L451 |
| Legal Tract | 8951 |
| Legal Lot Number | 451 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | EAST CONTRA COSTA |
| Census Block Group | 2 |
| Census Block | 2009 |
| 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 | Individual Name on Record |
|---|---|
| Mailing Address | 5577 MONAGHAN WAY, ANTIOCH, CA 94531-8678 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Jun 15, 2012 · Amount on Record |
| Deed Sale | Jun 15, 2012 · Amount on Record |
| Prior Sale | Jan 27, 2012 · Amount on Record |
| Deed Document Number | 2012141814 |
| Record Updated | Oct 29, 2026 |
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 | $397,535 (+2%) Land $46,115 Building $351,420 | |
| 2025 | $5,181.00 (+4.54%) | $389,741 (+4.04%) Land $45,211 Building $344,530 |
| 2023 | $4,956.00 (+1.33%) | $374,608 Land $43,456 Building $331,152 |
| 2022 | $4,891.00 |
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
| 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.
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 | 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 286 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 |
May also be available: T-Mobile, Verizon.
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