4504 Thoroughbred Ct, Antioch, CA 94531 Property Records

Contra Costa County property record for 4504 Thoroughbred Ct, Antioch, CA 94531

Property Summary

Property Type	Single Family Home
Details	5 bd · 3 ba · 3,249 sqft · built 1999
Lot Size	0.192 acres (8,350 sqft)
Owner	2 Individual Names on Record
Last Sale	$655,000 (Nov 2004)
Tax Bill	$9,264 (2025)
Deeds & Mortgages	Jan 2019 Line of Credit Jan 2019 Mortgage + 1 more
Flood Zone	Zone X (minimal risk)
APN	`053-570-031-4`

Property Details

APN / Parcel Number

Primary APN	`053-570-031-4`
Alternative APN	`053-570-031`

Interior

Bedrooms	5 Beds
Full Baths	3 Baths
Total Rooms	10 Rooms
Stories	2 Stories
Building Area	3,249 sqft Living Area
1st Floor Area	1,870 sqft
2nd Floor Area	1,379 sqft

Exterior

Year Built	Built 1999
Effective Year Built	Effective 2000
Lot Area	8,350 sqft (0.192 acres)
Garage Type	Attached
Garage Area	867 sqft
Parking Spaces	3 Parking Spaces

Utilities, Heating & Cooling

Cooling System	Central

Location & Zoning

Street Address	4504 THOROUGHBRED CT
City	ANTIOCH
State	CA
Zip	94531-9316
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Description	T7459 L556
Legal Subdivision	SUBDIVISION 7459
Legal Tract	7459
Legal Lot Number	556
Jurisdiction	CONTRA COSTA CA
Township / Civil Division	EAST CONTRA COSTA
Census Block Group	4
Census Block	4007
Census Tract	302009

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 Record	2 Individual Names on Record
Mailing Address	4504 THOROUGHBRED CT, ANTIOCH, CA 94531-9316
Occupancy	Owner Occupied
Owner Type	Individual
Vesting	Joint Tenants

Deeds, Mortgages & Sale History

Date	Document
Jan 30, 2019	Deed of Trust, Mortgage · Line of Credit MUFG UNION BANK NA
Jan 30, 2019	Deed of Trust, Mortgage · ARM MUFG UNION BANK NA
May 18, 2021	Deed of Trust, Mortgage · Conventional Mortgage CALIBER HOME LOANS INC

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Nov 5, 2004 · Amount on Record
Deed Sale	Nov 5, 2004 · Amount on Record
Prior Sale	Mar 3, 2004 · Amount on Record
Deed Document Number	2004425331
Prior Transfer Date	Aug 18, 2004
Prior Transfer Doc	0000326143
Record Updated	Oct 29, 2026

January 2019: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	CONTRA COSTA CA
Property Address	4504 THOROUGHBRED CT, ANTIOCH, CA 94531-9316
Transaction Type	Mortgage
Record Updated	Nov 3, 2022
Title Company	FIDELITY TITLE COMPANY

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0000012898
Date	Jan 30, 2019
Instrument	2019-012898

Lender

Name	MUFG UNION BANK NA
Type	Bank
Address	SAN DIEGO, CA 92121

Agreement

Type	Line of Credit
Amount	Amount Recorded
Term	361 Months
Due	Feb 1, 2049

Interest

Rate Type	Adjustable Rate
Change Frequency	Monthly

January 2019: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	CONTRA COSTA CA
Property Address	4504 THOROUGHBRED CT, ANTIOCH, CA 94531-9316
Transaction Type	Mortgage
Record Updated	Nov 3, 2022
Title Company	FIDELITY NATIONAL TITLE

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0000012897
Date	Jan 30, 2019
Instrument	2019-012897

Lender

Name	MUFG UNION BANK NA
Type	Bank
Address	SAN DIEGO, CA 92121

Agreement

Type	ARM
Amount	Amount Recorded
Term	361 Months
Due	Feb 1, 2049

Interest

Rate Type	Adjustable Rate
Rate	4.37%
Type Change Date	Feb 1, 2029
Change Frequency	Annually
Min Rate At Change	2.37%
Max Rate At Change	6.37%
Index	1-Year LIBOR
Max Rate	10.3%

May 2021: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	CONTRA COSTA CA
Property Address	4504 THOROUGHBRED CT, ANTIOCH, CA 94531-9316
Transaction Type	Mortgage
Record Updated	Nov 3, 2022
Title Company	LAWYERS TITLE COMPANY

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	4504 THOROUGHBRED CT, ANTIOCH, CA 94531-9316

Mortgage

Document Number	0000147467
Date	May 18, 2021
Instrument	2021-147467

Lender

Name	CALIBER HOME LOANS INC
Type	Mortgage Company
Address	COPPELL, TX 75019

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	361 Months
Due	Jun 1, 2051

Tax Assessment & Valuation

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

Property Jurisdictions

Type	Name
State	California
County	Contra Costa County
Municipality	Antioch City
Unified School District	Antioch Unified School District (KG - 12)

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value
2026		$825,000 (+1.1%) Land $339,506 Building $485,494
2025	$9,264.00 (+6.59%) Homeowner's exemption	$816,000 (+4.75%) Land $335,802 Building $480,198
2023	$8,691.00 (-0.21%) Homeowner's exemption	$779,000 Land $320,576 Building $458,424
2022	$8,709.00

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 · OpenFEMA NFIP redacted claims and policies, as of September 2026

FEMA Flood Zone	Zone X minimal risk
Flood Insurance Requirement	Not required lenders may require it
Community Rating System	Class 6 (20% premium discount)
Nearby Flood Policies	2 in force

Values are read at the parcel center point; flood claims are located to the census block group, not this parcel; lenders make the official flood determination.

Wildfire

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.

Drinking Water

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

Violations Reported to EPA

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.

Internet Providers

Source: FCC Broadband Data Collection, based on 566 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
T-Mobile Fixed Wireless	100 / 20
AT&T DSL · Fiber, Fixed Wireless in parts of the area	100 / 20

May also be available: Verizon.

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