4105 Diorite Ct, Antioch, CA 94531 Property Records

Contra Costa County property record for 4105 Diorite Ct, Antioch, CA 94531

Property Summary

Property Type	Single Family Home
Details	3 bd · 2.5 ba · 3,002 sqft · built 2002
Lot Size	0.139 acres (6,046 sqft)
Owner	Individual Name on Record
Last Sale	$700,000 (Apr 2024)
Tax Bill	$4,542 (2025)
Deeds & Mortgages	Apr 2024 Sale Jan 2024 Sale + 4 more
Flood Zone	Zone X (minimal risk)
APN	`053-640-009-6`

Property Details

APN / Parcel Number

Primary APN	`053-640-009-6`
Alternative APN	`053-640-009`

Interior

Bedrooms	3 Beds
Full Baths	2.5 Baths
Half Baths	1 Half Bath
Total Rooms	11 Rooms
Stories	2 Stories
Building Area	3,002 sqft Living Area
1st Floor Area	1,481 sqft
2nd Floor Area	1,521 sqft

Exterior

Year Built	Built 2002
Effective Year Built	Effective 2003
Lot Area	6,046 sqft (0.139 acres)
Garage Type	Attached
Garage Area	670 sqft
Parking Spaces	2 Parking Spaces

Utilities, Heating & Cooling

Cooling System	Central

Location & Zoning

Street Address	4105 DIORITE CT
City	ANTIOCH
State	CA
Zip	94531-9372
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Description	T8231 L196
Legal Subdivision	SUBDIVISION 8231
Legal Tract	8231
Legal Lot Number	196
Jurisdiction	CONTRA COSTA CA
Township / Civil Division	ANTIOCH-PITTSBURG
Census Block Group	2
Census Block	2011
Census Tract	355111

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	Individual Name on Record
Mailing Address	PO BOX 297, BRENTWOOD, CA 94513-0297
Occupancy	Owner Occupied
Owner Type	Individual

Deeds, Mortgages & Sale History

Date	Document
Apr 19, 2024	Grant Deed, Transfer OLD REPUBLIC TITLE, OLD REPUBLIC TITLE COMPANY
Jan 8, 2024	Grant Deed, Transfer
Oct 27, 2022	Trustee's Deed, Foreclosure SERVICELINK
Mar 26, 2021	Grant Deed, Transfer · Conventional Mortgage BECKAM FUNDING CORP
Oct 17, 2019	Quit Claim Deed, Transfer OLD REPUBLIC TITLE
Oct 17, 2019	Grant Deed, Transfer · Conventional Mortgage R M K FINANCIAL CORP

Assessor's Deed Record

Deed Names	Name on Deed
Last Sale	Apr 19, 2024 · Amount on Record
Deed Sale	Apr 19, 2024 · Amount on Record
Prior Sale	Mar 26, 2021 · Amount on Record
Deed Document Number	202436344
Prior Transfer Date	Aug 21, 2019
Prior Transfer Doc	0000177334
Record Updated	Oct 29, 2026

April 2024: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	CONTRA COSTA CA
Recording Date	Apr 19, 2024
Property Address	4105 DIORITE CT, ANTIOCH, CA 94531-9372
Document Number	0000036344
Map Reference	MB 426 PG 10
Instrument Date	Apr 13, 2024
Instrument	2024-036344
Transaction Type	Transfer
Record Updated	May 2, 2024
Title Company	OLD REPUBLIC TITLE, OLD REPUBLIC TITLE COMPANY

Transaction

Amount	Amount Recorded
Tax	$0.00
Amount Accuracy	Rounded by County
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	PO BOX 297, ANTIOCH, CA 94509-0029

January 2024: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	CONTRA COSTA CA
Recording Date	Jan 8, 2024
Property Address	4105 DIORITE CT, ANTIOCH, CA 94531-9372
Document Number	0000002096
Map Reference	MB 426 PG 10
Instrument Date	Oct 23, 2023
Instrument	2024-002096
Transaction Type	Transfer
Record Updated	Jan 18, 2024

Transaction

Tax	$0.00
Amount Accuracy	Transfer Tax Exempt
Additional	Notice of Trustee Sale Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	2000 N CLASSEN BLVD STE 3200, 3200, OKLAHOMA CITY, OK 73106-6034

October 2022: Trustee's Deed, Foreclosure

Document Type	Trustee's Deed
Jurisdiction	CONTRA COSTA CA
Recording Date	Oct 27, 2022
Property Address	4105 DIORITE CT, ANTIOCH, CA 94531-9372
Document Number	0000167034
Map Reference	MB 426 PG 10
Instrument Date	Oct 26, 2022
Instrument	2022-167034
Transaction Type	Foreclosure
Record Updated	Nov 4, 2022
Title Company	SERVICELINK

Transaction

Amount	Amount Recorded
Tax	$0.00
Amount Accuracy	Full Amount Stated

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	4212 50TH ST, LUBBOCK, TX 79413-3810

March 2021: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	CONTRA COSTA CA
Recording Date	Mar 26, 2021
Property Address	4105 DIORITE CT, ANTIOCH, CA 94531-9372
Document Number	0000092722
Map Reference	MB 426 PG 10
Instrument Date	Mar 23, 2021
Instrument	2021-092722
Transaction Type	Transfer
Record Updated	Nov 3, 2022
Title Company	STEWART TITLE, STEWART TITLE OF CA INC

Transaction

Amount	Amount Recorded
Downpayment	Downpayment on Record
Loan-to-Value (LTV)	LTV on Record
Tax	$0.00
Amount Accuracy	Rounded by County
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	4105 DIORITE CT, ANTIOCH, CA 94531-9372

Mortgage

Document Number	0000092723
Date	Mar 26, 2021
Instrument	2021-092723

Lender

Name	BECKAM FUNDING CORP
Type	Mortgage Company

Agreement

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

October 2019: Quit Claim Deed, Transfer

Document Type	Quit Claim Deed
Jurisdiction	CONTRA COSTA CA
Recording Date	Oct 17, 2019
Property Address	4105 DIORITE CT, ANTIOCH, CA 94531-9372
Document Number	0000177334
Instrument Date	Aug 22, 2019
Instrument	177334
Transaction Type	Transfer
Record Updated	Oct 25, 2019
Title Company	OLD REPUBLIC TITLE

Transaction

Tax	$0.00
Additional	Quitclaim Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Separate Estate/Property
Address	4105 DIORITE CT ANTIOCH CA 945319372, ANTIOCH, CA 94531-9372

October 2019: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	CONTRA COSTA CA
Recording Date	Oct 17, 2019
Property Address	4105 DIORITE CT, ANTIOCH, CA 94531-9372
Document Number	0000177335
Map Reference	MB 426 PG 10
Instrument Date	Aug 13, 2019
Instrument	2019-177335
Transaction Type	Transfer
Record Updated	Nov 3, 2022
Title Company	OLD REPUBLIC TITLE COMPANY

Transaction

Amount	Amount Recorded
Downpayment	Downpayment on Record
Loan-to-Value (LTV)	LTV on Record
Tax	$0.00
Amount Accuracy	Rounded by County
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Joint Tenants
Address	4105 DIORITE CT, ANTIOCH, CA 94531-9372

Mortgage

Document Number	0000177336
Date	Oct 17, 2019
Instrument	2019-177336

Lender

Name	R M K FINANCIAL CORP
Type	Mortgage Company

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	361 Months
Due	Nov 1, 2049

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		$369,839 (+2%) Land $208,080 Building $161,759
2025	$4,542.00 (-47.11%) Homeowner's exemption	$362,588 (-52.29%) Land $204,000 Building $158,588
2023	$8,588.00 (-0.19%)	$760,000 Land $230,000 Building $530,000
2022	$8,604.00

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
Nearby Flood Claims	1 (2010)
Claims Outside the SFHA	1 of 1
Most Recent Claim	Mar 2010 · other causes

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 606 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
AT&T DSL · Fiber, Fixed Wireless in parts of the area	100 / 20

May also be available: Verizon.

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