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5101 Roundup Ct, Antioch, CA 94531 Property Records

Contra Costa County property record for 5101 Roundup Ct, Antioch, CA 94531

Property Summary

Property TypeSingle Family Home
Details4 bd · 2.5 ba · 1,475 sqft · built 1995
Lot Size0.231 acres (10,080 sqft)
OwnerIndividual Name on Record
Last Sale$490,000 (Mar 2006)
Tax Bill$5,773 (2025)
Deeds & MortgagesSep 2017 Mortgage
Jun 2017 Transfer
Flood ZoneZone X (minimal risk)
APN056-240-007-7

Property Details

APN / Parcel Number

Primary APN056-240-007-7
Alternative APN
  • 056-240-007

Interior

Bedrooms4 Beds
Full Baths2.5 Baths
Half Baths1 Half Bath
Total Rooms7 Rooms
Stories1 Story
Building Area1,475 sqft Living Area
1st Floor Area1,475 sqft

Exterior

Year BuiltBuilt 1995
Effective Year BuiltEffective 1995
Lot Area10,080 sqft (0.231 acres)
Garage TypeAttached
Garage Area467 sqft
Parking Spaces2 Parking Spaces

Utilities, Heating & Cooling

Heating SystemCentral

Location & Zoning

Street Address5101 ROUNDUP CT
CityANTIOCH
StateCA
Zip94531-8474
Property CategoryResidential
Property TypeResidential > Single Family > Home
Local Zoning CodeA-2
Legal DescriptionT7620 L491
Legal SubdivisionSUBDIVISION 7620
Legal Tract7620
Legal Lot Number491
JurisdictionCONTRA COSTA CA
Township / Civil DivisionEAST CONTRA COSTA
Census Block Group1
Census Block1011
Census Tract303207

Historic Designation

Source: NPS National Register of Historic Places, as of August 1, 2026

Historic DistrictWithin 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.

Owner

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 RecordIndividual Name on Record
Mailing Address5101 ROUNDUP CT, ANTIOCH, CA 94531-8474
OccupancyOwner Occupied
Owner TypeIndividual

Deeds, Mortgages & Sale History

DateDocument
Sep 11, 2017Deed of Trust, Mortgage · Conventional Mortgage
CASHCALL
Jun 21, 2017Quit Claim Deed, Transfer
OTHER

Assessor's Deed Record

Deed NamesName on Deed
Last SaleMar 3, 2006 · Amount on Record
Deed SaleMar 3, 2006 · Amount on Record
Prior SaleMay 2, 2003 · Amount on Record
Deed Document Number200666041
Last Transfer DateJun 19, 2017
Transfer Doc0000110987
Record UpdatedOct 29, 2026

September 2017: Deed of Trust, Mortgage

Document TypeDeed of Trust
JurisdictionCONTRA COSTA CA
Property Address5101 ROUNDUP CT, ANTIOCH, CA 94531-8474
Document Number0000170321
Instrument DateSep 11, 2017
Transaction TypeMortgage
Record UpdatedSep 25, 2017
Title CompanyORANGE COAST TITLE COMPANY, ORANGE COAST TITLE CO

Transferred To (Grantee/Buyer)

NameVerified Name
RelationshipLife Estate
Address5101 ROUNDUP CT ANTIOCH CA 945318474, ANTIOCH, CA 94531-8474

Mortgage

Document Number0000170321
DateSep 19, 2017
Instrument170321
Lender
NameCASHCALL
TypeFunding / Finance Company
AddressORANGE, CA 92868
Agreement
TypeConventional Mortgage
AmountAmount Recorded
Term360 Months
DueSep 18, 2047

June 2017: Quit Claim Deed, Transfer

Document TypeQuit Claim Deed
JurisdictionCONTRA COSTA CA
Recording DateJun 21, 2017
Property Address5101 ROUNDUP CT, ANTIOCH, CA 94531-8474
Document Number0000110987
Instrument DateJun 19, 2017
Instrument110987
Transaction TypeTransfer
Record UpdatedJul 4, 2017
Title CompanyOTHER

Transaction

Tax$0.00
Additional
  • Quitclaim
  • Intrafamily Transfer

Transferred From (Grantor/Seller)

NameVerified Name

Transferred To (Grantee/Buyer)

NameVerified Name
RelationshipLife Estate
Address5101 ROUNDUP CT ANTIOCH CA 945318474, ANTIOCH, CA 94531-8474

Tax Assessment & Valuation

Source: Contra Costa County assessment roll, as of July 14, 2026

Property Jurisdictions

TypeName
StateCalifornia
CountyContra Costa County
MunicipalityAntioch City
Unified School DistrictAntioch Unified School District (KG - 12)

Tax Bill & Assessment History

YearTax BillAssessed Value
2026$491,130 (+2%) Land $236,936 Building $254,194
2025$5,773.00 (+6.12%)$481,501 (+4.04%) Land $232,291 Building $249,210
2023$5,440.00 (+1.55%)$462,806 Land $223,272 Building $239,534
2022$5,357.00

Assessed value is set for property tax purposes and is not a market price estimate.

Flood

Source: FEMA National Flood Hazard Layer, effective October 12, 2026

FEMA Flood ZoneZone X
minimal risk
Flood Insurance RequirementNot required
lenders may require it

Values are read at the parcel center point; lenders make the official flood determination.

Wildfire

Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024

Wildfire RiskLow
lower than 65% of the US · lower than 79% of California
Wildfire Likelihood0.05% annual chance
ExposureIndirect
within ember reach

Values cover an area roughly 900 ft across, not the parcel itself; insurers use their own ratings.

Drinking Water

Source: EPA Safe Drinking Water Information System, as of September 2026

Water SystemCITY OF ANTIOCH
serves 116,781 people · EPA ID CA0710001
Water SourceSurface water
Last State InspectionJan 2024
LeadUnder 1 ppb (2022–2024)
action level 15 ppb

Violations Reported to EPA

Water QualityNone
last 10 years
Treatment and ProcedureNone
last 10 years
Monitoring and ReportingNone
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.

Internet Providers

Source: FCC Broadband Data Collection, based on 638 locations within half a mile, as of December 31, 2025

ProviderMax 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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