4101 Jarosite Ct, Antioch, CA 94509 Property Records

Contra Costa County property record for 4101 Jarosite Ct, Antioch, CA 94509

Property Summary

Property Type	Single Family Home
Details	3 bd · 2 ba · 1,866 sqft · built 1997
Lot Size	0.218 acres (9,508 sqft)
Owner	Individual Name on Record
Last Sale	$715,000 (May 2025)
Tax Bill	$8,157 (2025)
Deeds & Mortgages	Aug 2022 Transfer Aug 2022 Transfer + 1 more
Flood Zone	Zone X (minimal risk)
APN	`053-520-008-3`

Property Details

APN / Parcel Number

Primary APN	`053-520-008-3`
Alternative APN	`053-520-008`

Interior

Bedrooms	3 Beds
Full Baths	2 Baths
Total Rooms	7 Rooms
Stories	1 Story
Building Area	1,866 sqft Living Area
1st Floor Area	1,866 sqft

Exterior

Year Built	Built 1997
Effective Year Built	Effective 1997
Lot Area	9,508 sqft (0.218 acres)
Garage Type	Attached
Garage Area	564 sqft
Parking Spaces	2 Parking Spaces

Utilities, Heating & Cooling

Cooling System	Central

Location & Zoning

Street Address	4101 JAROSITE CT
City	ANTIOCH
State	CA
Zip	94509-8941
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Description	T7999 L110
Legal Subdivision	SUBDIVISION 7999
Legal Tract	7999
Legal Lot Number	110
Jurisdiction	CONTRA COSTA CA
Township / Civil Division	ANTIOCH-PITTSBURG
Census Block Group	3
Census Block	3008
Census Tract	355109

Owner

Source: Contra Costa County records, as of July 14, 2026

Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.

Owner of Record	Individual Name on Record
Mailing Address	3825 WARBLER DR, ANTIOCH, CA 94509-9365
Owner Type	Individual
Vesting	Sole Owner

Deeds, Mortgages & Sale History

Date	Document
Aug 9, 2022	Affidavit of Death of Joint Tenant, Transfer
Aug 9, 2022	Intrafamily Transfer, Transfer
Nov 16, 2017	Grant Deed, Transfer · Conventional Mortgage ALAMEDA MORTGAGE CORP

Assessor's Deed Record

Deed Names	Name on Deed
Last Sale	May 19, 2025 · Amount on Record
Deed Sale	May 19, 2025 · Amount on Record
Prior Sale	Oct 2, 2024 · Amount on Record
Deed Document Number	202549251
Prior Transfer Date	Apr 30, 2025
Prior Transfer Doc	0000050596
Record Updated	Oct 29, 2026

August 2022: Affidavit of Death of Joint Tenant, Transfer

Document Type	Affidavit of Death of Joint Tenant
Jurisdiction	CONTRA COSTA CA
Recording Date	Aug 9, 2022
Property Address	4101 JAROSITE CT, ANTIOCH, CA 94509-8941
Document Number	0000124267
Map Reference	MB 388 PG 1
Instrument Date	Jul 7, 2022
Instrument	2022-124267
Transaction Type	Transfer
Record Updated	Nov 3, 2022

Transaction

Tax	$0.00
Amount Accuracy	Transfer Tax Exempt
Additional	Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	4101 JAROSITE CT, ANTIOCH, CA 94509-8941

August 2022: Intrafamily Transfer, Transfer

Document Type	Intrafamily Transfer
Jurisdiction	CONTRA COSTA CA
Recording Date	Aug 9, 2022
Property Address	4101 JAROSITE CT, ANTIOCH, CA 94509-8941
Document Number	0000124268
Map Reference	MB 388 PG 1
Instrument Date	Jul 7, 2022
Instrument	2022-124268
Transaction Type	Transfer
Record Updated	Jun 7, 2023

Transaction

Tax	$0.00
Amount Accuracy	Transfer Tax Exempt
Additional	Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Living Trust
Address	4101 JAROSITE CT, ANTIOCH, CA 94509-8941

November 2017: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	CONTRA COSTA CA
Recording Date	Nov 16, 2017
Property Address	4101 JAROSITE CT, ANTIOCH, CA 94509-8941
Document Number	0000216856
Map Reference	MAP388 PG1
Instrument Date	Nov 13, 2017
Instrument	2017-216856
Transaction Type	Transfer
Record Updated	Jul 27, 2021
Title Company	LAWYERS 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	Notice of Trustee Sale Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Joint Tenants
Address	4101 JAROSITE CT, ANTIOCH, CA 94509-8941

Mortgage

Document Number	0000216857
Date	Nov 16, 2017
Instrument	2017-216857

Lender

Name	ALAMEDA MORTGAGE CORP
Type	Mortgage Company

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	181 Months
Due	Dec 1, 2032

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		$729,300 (+2%) Land $214,200 Building $515,100
2025	$8,157.00 (+30.7%)	$715,000 (+30.76%) Land $260,000 Building $455,000
2023	$6,241.00 (+2.82%)	$546,819 Land $136,704 Building $410,115
2022	$6,070.00

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 Zone	Zone X minimal risk
Flood Insurance Requirement	Not 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 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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