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3713 Union Ct, Antioch, CA 94509 Property Records

Contra Costa County property record for 3713 Union Ct, Antioch, CA 94509

Property Summary

Property TypeSingle Family Home
Details3 bd · 3 ba · 2,135 sqft · built 1988
Lot Size0.234 acres (10,186 sqft)
Owner2 Individual Names on Record
Last Sale$106,000 (Jun 2002)
Tax Bill$4,965 (2025)
Deeds & MortgagesOct 2025 Mortgage
Jun 2022 Mortgage
Flood ZoneZone X (minimal risk)
APN076-631-015-5

Property Details

APN / Parcel Number

Primary APN076-631-015-5
Alternative APN
  • 076-631-015

Interior

Bedrooms3 Beds
Full Baths3 Baths
Total Rooms11 Rooms
Stories2 Stories
Building Area2,135 sqft Living Area
1st Floor Area1,155 sqft
2nd Floor Area980 sqft

Exterior

Year BuiltBuilt 1988
Effective Year BuiltEffective 1988
Lot Area10,186 sqft (0.234 acres)
Garage TypeAttached
Garage Area482 sqft
Parking Spaces2 Parking Spaces

Location & Zoning

Street Address3713 UNION CT
CityANTIOCH
StateCA
Zip94509-7023
Property CategoryResidential
Property TypeResidential > Single Family > Home
Legal DescriptionT6812 L15
Legal SubdivisionSUBDIVISION 6812
Legal Tract6812
Legal Lot Number15
JurisdictionCONTRA COSTA CA
Township / Civil DivisionANTIOCH-PITTSBURG
Census Block Group4
Census Block4007
Census Tract307205

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 Record2 Individual Names on Record
Mailing Address3713 UNION CT, ANTIOCH, CA 94509-7023
OccupancyOwner Occupied
Owner TypeIndividual

Deeds, Mortgages & Sale History

DateDocument
Oct 24, 2025Deed of Trust, Mortgage · Conventional Mortgage
ROCKET MORTGAGE LLC
Jun 9, 2022Intrafamily Transfer, Transfer · Conventional Mortgage
ROCKET MORTGAGE LLC

Assessor's Deed Record

Deed Names2 Names on Deed
Last SaleJun 28, 2002 · Amount on Record
Deed SaleJun 28, 2002 · Amount on Record
Prior SaleNov 20, 1998 · Amount on Record
Deed Document Number2002227687
Last Transfer DateJun 4, 2022
Transfer Doc0000096398
Record UpdatedSep 20, 2026

October 2025: Deed of Trust, Mortgage

Document TypeDeed of Trust
JurisdictionCONTRA COSTA CA
Property Address3713 UNION CT, ANTIOCH, CA 94509-7023
Transaction TypeMortgage
Record UpdatedNov 7, 2025

Transferred To (Grantee/Buyer)

NameVerified Name
Address3713 UNION CT, ANTIOCH, CA 94509-7023

Mortgage

Document Number0000112643
DateOct 24, 2025
Instrument2025- 112643
Lender
NameROCKET MORTGAGE LLC
TypeMortgage Company
Address1050 WOODWARD AVE, DETROIT, MI 48226
Agreement
TypeConventional Mortgage
AmountAmount Recorded
Term361 Months
DueNov 1, 2055

June 2022: Intrafamily Transfer, Transfer

Document TypeIntrafamily Transfer
JurisdictionCONTRA COSTA CA
Recording DateJun 9, 2022
Property Address3713 UNION CT, ANTIOCH, CA 94509-7023
Document Number0000096398
Map ReferenceMB 316 PG 48
Instrument DateJun 4, 2022
Instrument2022-096398
Transaction TypeTransfer
Record UpdatedNov 3, 2022
Title CompanyAMROCK INC, AMROCK LLC

Transaction

Tax$0.00
Amount AccuracyTransfer Tax Exempt
Additional
  • Intrafamily Transfer

Transferred From (Grantor/Seller)

NameVerified Name

Transferred To (Grantee/Buyer)

NameVerified Name
RelationshipJoint Tenants
Address3713 UNION CT, ANTIOCH, CA 94509-7023

Mortgage

Document Number0000096399
DateJun 9, 2022
Instrument2022-096399
Lender
NameROCKET MORTGAGE LLC
TypeMortgage Company
Agreement
TypeConventional Mortgage
AmountAmount Recorded
Term361 Months
DueJul 1, 2052

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$395,360 (+2%) Land $79,941 Building $315,419
2025$4,965.00 (+7.3%)$387,609 (+6.42%) Land $78,374 Building $309,235
2023$4,627.00 (+1.54%)$364,227 Land $75,332 Building $288,895
2022$4,557.00

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 66% of the US · lower than 80% of California
Wildfire Likelihood0.05% annual chance
ExposureDirect
burnable vegetation

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 501 locations within half a mile, as of December 31, 2025

ProviderMax Down / Up (Mbps)
Xfinity
Cable		2,000 / 250
Unwired
Fixed Wireless		300 / 25
AT&T
DSL · Fixed Wireless in parts of the area		100 / 20

May also be available: Verizon.

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