Contra Costa County property record for 5617 Monaghan Way, Antioch, CA 94531
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 3 ba · 2,237 sqft · built 2012 |
| Lot Size | 0.176 acres (7,669 sqft) |
| Owner | 2 Individual Names on Record |
| Last Sale | $809,000 (Mar 2022) |
| Tax Bill | $9,025 (2025) |
| Deeds & Mortgages | Mar 2022 Mortgage Jun 2020 Transfer |
| Flood Zone | Zone X (minimal risk) |
| APN | 056-440-035-6 |
| Primary APN | 056-440-035-6 |
|---|---|
| Alternative APN |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 3 Baths |
| Total Rooms | 10 Rooms |
| Stories | 1 Story |
| Building Area | 2,237 sqft Living Area |
| 1st Floor Area | 2,237 sqft |
| Year Built | Built 2012 |
|---|---|
| Effective Year Built | Effective 2012 |
| Lot Area | 7,669 sqft (0.176 acres) |
| Garage Type | Attached |
| Garage Area | 451 sqft |
| Parking Spaces | 2 Parking Spaces |
| Street Address | 5617 MONAGHAN WAY |
|---|---|
| City | ANTIOCH |
| State | CA |
| Zip | 94531-8671 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | T8951 L461 |
| Legal Subdivision | SUBDIVISION 8951 |
| Legal Tract | 8951 |
| Legal Lot Number | 461 |
| 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 | 2 Individual Names on Record |
|---|---|
| Mailing Address | 4550 BUTTERFLY CREEK RD, SAN RAMON, CA 94582-5409 |
| Owner Type | Individual |
| Date | Document |
|---|---|
| Mar 9, 2022 | Deed of Trust, Mortgage · Conventional Mortgage KEY BANK NA |
| Jun 24, 2020 | Quit Claim Deed, Transfer FIRST AMERICAN TITLE |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Mar 9, 2022 · Amount on Record |
| Deed Sale | Mar 9, 2022 · Amount on Record |
| Prior Sale | Dec 31, 2012 · Amount on Record |
| Deed Document Number | 202242136 |
| Prior Transfer Date | May 25, 2020 |
| Prior Transfer Doc | 0000123241 |
| Record Updated | Oct 29, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Property Address | 5617 MONAGHAN WAY, ANTIOCH, CA 94531-8671 |
| Transaction Type | Mortgage |
| Record Updated | Aug 1, 2023 |
| Title Company | FIDELITY NATIONAL TITLE |
| Name | Verified Name |
|---|---|
| Address | 4550 BUTTERFLY CREEK RD, SAN RAMON, CA 94582-5409 |
| Document Number | 0000042137 |
|---|---|
| Date | Mar 9, 2022 |
| Instrument | 2022-042137 |
| Name | KEY BANK NA |
|---|---|
| Type | Bank |
| Address | ANTIOCH, CA 94531 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 361 Months |
| Due | Apr 1, 2052 |
| Document Type | Quit Claim Deed |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | Jun 24, 2020 |
| Property Address | 5617 MONAGHAN WAY, ANTIOCH, CA 94531-8671 |
| Document Number | 0000123241 |
| Instrument Date | May 25, 2020 |
| Instrument | 123241 |
| Transaction Type | Transfer |
| Record Updated | Jul 2, 2020 |
| Title Company | FIRST AMERICAN TITLE |
| Tax | $0.00 |
|---|---|
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Revocable Trust |
| Address | 2225 PIE KNOLL DR #1 WALNUT CREEK CA 94595, 1, WALNUT CREEK, CA 94595 |
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 | $757,000 (+2.44%) Land $243,288 Building $513,712 | |
| 2025 | $9,025.00 (+6.19%) | $739,000 (+6.48%) Land $237,503 Building $501,497 |
| 2023 | $8,499.00 (+55.89%) | $694,000 Land $223,000 Building $471,000 |
| 2022 | $5,452.00 |
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 | 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 416 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| AT&T Fiber · DSL | 5,000 / 5,000 |
| Xfinity Cable | 2,000 / 250 |
| Unwired Fixed Wireless | 300 / 25 |
| Verizon Fixed Wireless | 300 / 20 |
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