Contra Costa County property record for 5109 Roundup Ct, Antioch, CA 94531
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 2.5 ba · 1,680 sqft · built 1995 |
| Lot Size | 0.095 acres (4,130 sqft) |
| Owner | Company Name on Record |
| Last Sale | $159,000 (Nov 1994) |
| Tax Bill | $3,527 (2025) |
| Deeds & Mortgages | Mar 2022 Mortgage Mar 2022 Transfer + 3 more |
| Flood Zone | Zone X (minimal risk) |
| APN | 056-240-005-1 |
| Primary APN | 056-240-005-1 |
|---|---|
| Alternative APN |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 2.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 7 Rooms |
| Stories | 2 Stories |
| Building Area | 1,680 sqft Living Area |
| 1st Floor Area | 866 sqft |
| 2nd Floor Area | 814 sqft |
| Year Built | Built 1995 |
|---|---|
| Effective Year Built | Effective 1995 |
| Lot Area | 4,130 sqft (0.095 acres) |
| Garage Type | Attached |
| Garage Area | 471 sqft |
| Parking Spaces | 2 Parking Spaces |
| Street Address | 5109 ROUNDUP CT |
|---|---|
| City | ANTIOCH |
| State | CA |
| Zip | 94531-8474 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | T7620 L489 |
| Legal Subdivision | SUBDIVISION 7620 |
| Legal Tract | 7620 |
| Legal Lot Number | 489 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | EAST CONTRA COSTA |
| Census Block Group | 1 |
| Census Block | 1011 |
| Census Tract | 303207 |
Source: NPS National Register of Historic Places, as of August 1, 2026
| Historic District | Within the Shannon-Williamson Ranch listed 1987 · 12 contributing resources · NRIS 87000003 |
|---|
Federal listing alone does not restrict alterations; local historic district rules, which this data does not cover, may apply.
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 | Company Name on Record |
|---|---|
| Mailing Address | 5109 ROUNDUP CT, ANTIOCH, CA 94531-8474 |
| Occupancy | Owner Occupied |
| Owner Type | Company |
| Vesting | Trust |
| Date | Document |
|---|---|
| Mar 7, 2022 | Intrafamily Transfer, Transfer · Conventional Mortgage ROCKET MORTGAGE LLC |
| Mar 7, 2022 | Intrafamily Transfer, Transfer AMROCK INC |
| Aug 9, 2021 | Intrafamily Transfer, Transfer |
| Aug 9, 2021 | Intrafamily Transfer, Transfer · Conventional Mortgage QUICKEN LOANS LLC |
| Mar 9, 2017 | Loan Modification, Mortgage · Line of Credit WELLS FARGO BK |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Nov 28, 1994 · Amount on Record |
| Deed Sale | Nov 28, 1994 · Amount on Record |
| Deed Document Number | 1994283145 |
| Last Transfer Date | Mar 2, 2022 |
| Transfer Doc | 0000040280 |
| Record Updated | Sep 20, 2026 |
| Document Type | Intrafamily Transfer |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | Mar 7, 2022 |
| Property Address | 5109 ROUNDUP CT, ANTIOCH, CA 94531-8474 |
| Document Number | 0000040280 |
| Map Reference | MB 371 PG 3 |
| Instrument Date | Mar 2, 2022 |
| Instrument | 2022-040280 |
| Transaction Type | Transfer |
| Record Updated | Nov 3, 2022 |
| Title Company | AMROCK INC |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | Transfer Tax Exempt |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Address | 5109 ROUNDUP CT, ANTIOCH, CA 94531-8474 |
| Document Number | 0000040281 |
|---|---|
| Date | Mar 7, 2022 |
| Instrument | 2022-040281 |
| Name | ROCKET MORTGAGE LLC |
|---|---|
| Type | Mortgage Company |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 361 Months |
| Due | Apr 1, 2052 |
| Document Type | Intrafamily Transfer |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | Mar 7, 2022 |
| Property Address | 5109 ROUNDUP CT, ANTIOCH, CA 94531-8474 |
| Document Number | 0000040282 |
| Map Reference | MB 371 PG 3 |
| Instrument Date | Mar 2, 2022 |
| Instrument | 2022-040282 |
| Transaction Type | Transfer |
| Record Updated | Jun 7, 2023 |
| Title Company | AMROCK INC |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | Transfer Tax Exempt |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Revocable Trust |
| Address | 5109 ROUNDUP CT, ANTIOCH, CA 94531-8474 |
| Document Type | Intrafamily Transfer |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | Aug 9, 2021 |
| Property Address | 5109 ROUNDUP CT, ANTIOCH, CA 94531-8474 |
| Document Number | 0000220969 |
| Map Reference | MB 371 PG 3 |
| Instrument Date | Jun 1, 2021 |
| Instrument | 2021-220969 |
| Transaction Type | Transfer |
| Record Updated | Jun 7, 2023 |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | Transfer Tax Exempt |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Revocable Trust |
| Address | 5109 ROUNDUP CT, ANTIOCH, CA 94531-8474 |
| Document Type | Intrafamily Transfer |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | Aug 9, 2021 |
| Property Address | 5109 ROUNDUP CT, ANTIOCH, CA 94531-8474 |
| Document Number | 0000220967 |
| Map Reference | MB 371 PG 3 |
| Instrument Date | Jun 1, 2021 |
| Instrument | 2021-220967 |
| Transaction Type | Transfer |
| Record Updated | Nov 3, 2022 |
| Title Company | AMROCK INC, AMROCK |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | Transfer Tax Exempt |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Community Property |
| Address | 5109 ROUNDUP CT, ANTIOCH, CA 94531-8474 |
| Document Number | 0000220968 |
|---|---|
| Date | Aug 9, 2021 |
| Instrument | 2021-220968 |
| Name | QUICKEN LOANS LLC |
|---|---|
| Type | Mortgage Company |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 358 Months |
| Due | Jun 1, 2051 |
| Document Type | Loan Modification |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Property Address | 5109 ROUNDUP CT, ANTIOCH, CA 94531-8474 |
| Document Number | 0000060125 |
| Instrument Date | Mar 9, 2017 |
| Transaction Type | Mortgage |
| Record Updated | Aug 18, 2018 |
| Name | Verified Name |
|---|---|
| Relationship | Revocable Trust |
| Address | 5109 ROUNDUP CT ANTIOCH CA 945318474, ANTIOCH, CA 94531-8474 |
| Document Number | 0000060125 |
|---|---|
| Date | Apr 6, 2017 |
| Instrument | 60125 |
| Name | WELLS FARGO BK |
|---|---|
| Type | Bank |
| Address | DES MOINES, IA 50328 |
| Type | Line of Credit |
|---|---|
| Amount | Amount Recorded |
| Term | 384 Months |
| Due | Apr 5, 2049 |
| Rate Type | Adjustable Rate |
|---|---|
| Rate | 4.73% |
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 | $280,932 (+2%) Land $68,511 Building $212,421 | |
| 2025 | $3,527.00 (+6.56%) Homeowner's exemption | $275,424 (+4.04%) Land $67,168 Building $208,256 |
| 2023 | $3,310.00 (+1.47%) Homeowner's exemption | $264,730 Land $64,560 Building $200,170 |
| 2022 | $3,262.00 |
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 62% of the US · lower than 77% of California |
|---|---|
| Wildfire Likelihood | 0.06% 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 | 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 638 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 |
| AT&T DSL | 100 / 20 |
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