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1817 Trinity Ct, Antioch, CA 94509 Property Records

Contra Costa County property record for 1817 Trinity Ct, Antioch, CA 94509 · Last verified July 2026

Property Highlights

Property TypeResidential > Single Family > Home
Bedrooms3 Beds
Bathrooms2 Baths
Year BuiltBuilt 1975
Square Footage1,245 sqft Living Area
Lot Size7,000 sqft (0.161 acres)
OccupancyOwner Occupied
Last Sale$365,000 (2017)
Tax Bill$5,140.00 (2025)

Property Details

APN / Parcel Number

Primary APN051-272-013-7
Alternative APN
  • 051-272-013

Interior

Bedrooms3 Beds
Full Baths2 Baths
Total Rooms6 Rooms
Building Area1,245 sqft Living Area
1st Floor1,245 sqft 1st Floor
Stories1 Stories

Exterior

Year BuiltBuilt 1974
Effective Year BuiltEffective 1975
Lot Area7,000 sqft (0.161 acres)
Parking Spaces2 Parking Spaces
Garage TypeAttached Garage
Garage Area460 sqft Garage

Utilities and HVAC

Cooling SystemCentral Cooling

Location & Zoning

Street Address1817 TRINITY CT
CityANTIOCH
StateCA
Zip94509-2131
Property UsageResidential Property Usage
TypeResidential > Single Family > Home
Legal DescriptionTRACT 4231 LOT 78 EX MR
Legal SubdivisionHILLSDALE SUB 4231
Legal Tract4231
Legal Lot Number78
JurisdictionCONTRA COSTA CA
Minor Civil DivisionANTIOCH-PITTSBURG
Census Blockgroup1
Census Block1001
Census Tract306002

Owner

Source: Contra Costa County records · APN 051-272-013-7

Assessment roll updated July 14, 2026 · Last verified July 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 File
Mailing Address1817 TRINITY CT, ANTIOCH, CA 94509-2131
OccupancyOwner Occupied
Owner TypeOwner is an Individual, Couple or Unincorporated Entity
VestingJoint Tenants

Deeds, Mortgages & Sale History

DateDocument
Sep 24, 2020Intrafamily Transfer, Transfer · Conventional Mortgage
UNITED WHOLESALE MORTGAGE
Oct 27, 2017Grant Deed, Transfer · Federal Housing Administration (FHA) Mortgage
UNITED WHOLESALE MORTGAGE

Assessor's Deed Record

Deed Names2 Verified Names on Deed
Last SaleOct 27, 2017 · Amount on Record
Deed SaleOct 27, 2017 · Amount on Record
Prior SaleFeb 01, 2012 · Amount on Record
Deed Doc Number2017202418
Last Transfer DateSep 18, 2020
Transfer Doc0000215227
Record RefreshedSep 20, 2026

September 2020: Intrafamily Transfer, Transfer

Document TypeIntrafamily Transfer
JurisdictionCONTRA COSTA CA
Recording DateSep 24, 2020
Property Address1817 TRINITY CT, ANTIOCH, CA 94509-2131
Document Number0000215227
Map ReferenceMB 145 PG 1-3
Instrument DateSep 18, 2020
Instrument2020-215227
Transaction TypeTransfer
Record UpdatedNov 03, 2022
Title CompanyOLD REPUBLIC TITLE COMPANY

Transaction

Tax$0.00
Amount AccuracyTransfer Tax Exempt
Additional
  • Interfamily Transfer

Transferred From (Grantor/Seller)

NameVerified Name

Transferred To (Grantee/Buyer)

NameVerified Name
RelationshipJoint Tenants
Address1817 TRINITY CT, ANTIOCH, CA 94509-2131

Mortgage

Document Number0000215228
DateSep 24, 2020
Instrument2020-215228
Lender
NameUNITED WHOLESALE MORTGAGE
TypeMortgage Company
Agreement
TypeConventional Mortgage
AmountAmount Recorded
Term361 Months
DueOct 01, 2050

October 2017: Grant Deed, Transfer

Document TypeGrant Deed
JurisdictionCONTRA COSTA CA
Recording DateOct 27, 2017
Property Address1817 TRINITY CT, ANTIOCH, CA 94509-2131
Document Number0000202418
Map ReferenceMAP145 PG1-3
Instrument DateOct 25, 2017
Instrument2017-202418
Transaction TypeTransfer
Record UpdatedNov 03, 2022
Title CompanyCHICAGO TITLE COMPANY

Transaction

AmountAmount Recorded
DownpaymentDownpayment on File
Loan-to-Value (LTV)LTV on Record
Tax$0.00
Amount AccuracyRounded Values by County
Additional
  • Arms Length Transaction

Transferred From (Grantor/Seller)

NameVerified Name

Transferred To (Grantee/Buyer)

NameVerified Name
RelationshipJoint Tenants
Address1817 TRINITY CT, ANTIOCH, CA 94509-2131

Mortgage

Document Number0000202419
DateOct 27, 2017
Instrument2017-202419
Lender
NameUNITED WHOLESALE MORTGAGE
TypeMortgage Company
AddressTROY, MI 48083
Agreement
TypeFederal Housing Administration (FHA) Mortgage
AmountAmount Recorded
Term361 Months
DueNov 01, 2047

Tax Assessment & Valuation

Source: Contra Costa County records · Assessment roll updated July 14, 2026 · Last verified July 2026

Property Jurisdictions

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

Tax Bill & Assessment History

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

YearTax BillAssessed Value
2026$423,607 (+2%) Land $174,084 Building $249,523
2025$5,140.00 (+4.92%) Homeowner's exemption$415,302 (+4.04%) Land $170,671 Building $244,631
2023$4,899.00 (+0.31%)$399,178 Land $164,045 Building $235,133
2022$4,884.00

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