623 W 6th St, Antioch, CA 94509 Property Records

Contra Costa County property record for 623 W 6th St, Antioch, CA 94509

Property Summary

Property Type	Single Family Home
Details	3 bd · 2 ba · 1,582 sqft · built 2002
Lot Size	0.115 acres (5,000 sqft)
Owner	Individual Name on File
Last Sale	$100,000 (Mar 2012)
Tax Bill	$1,902 (2025)
Deeds & Mortgages	Sep 2021 Mortgage Jul 2019 Transfer
Flood Zone	Zone X (minimal risk)
APN	`066-192-006-6`

Property Details

APN / Parcel Number

Primary APN	`066-192-006-6`
Alternative APN	`066-192-006`

Interior

Bedrooms	3 Beds
Full Baths	2 Baths
Total Rooms	6 Rooms
Stories	1 Story
Building Area	1,582 sqft Living Area
1st Floor Area	1,582 sqft

Exterior

Year Built	Built 2002
Effective Year Built	Effective 2002
Lot Area	5,000 sqft (0.115 acres)
Garage Type	Attached
Garage Area	600 sqft
Parking Spaces	2 Parking Spaces

Utilities, Heating & Cooling

Cooling System	Central

Location & Zoning

Street Address	623 W 6TH ST
City	ANTIOCH
State	CA
Zip	94509-1606
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	C1
Legal Description	TOWN OF ANTIOCH LOT 6 BLK 53
Legal Subdivision	ANTIOCH
Legal Block	53
Legal Lot Number	6
Jurisdiction	CONTRA COSTA CA
Township / Civil Division	ANTIOCH-PITTSBURG
Census Block Group	5
Census Block	5023
Census Tract	305000

Owner

623 W 6th St is owned and occupied by an individual who bought it in March 2012.

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 File
Mailing Address	623 W 6TH ST, ANTIOCH, CA 94509-1606
Occupancy	Owner Occupied
Owner Type	Individual

Deeds, Mortgages & Sale History

Date	Document
Sep 9, 2021	Deed of Trust, Mortgage · Conventional Mortgage AMERISAVE MORTGAGE CORP
Jul 26, 2019	Quit Claim Deed NOT AVAILABLE

Assessor's Deed Record

Deed Names	Name on Deed
Last Sale	Mar 22, 2012 · Amount on File
Deed Sale	Mar 22, 2012 · Amount on File
Prior Sale	Sep 8, 2010 · Amount on File
Deed Document Number	201265727
Prior Transfer Date	Sep 2, 2003
Prior Transfer Doc	0000447357
Record Updated	Sep 20, 2026

September 2021: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	CONTRA COSTA CA
Property Address	623 W 6TH ST, ANTIOCH, CA 94509-1606
Transaction Type	Mortgage
Record Updated	Nov 3, 2022
Title Company	SOLIDIFI TITLE & CLOSING

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	623 W 6TH ST, ANTIOCH, CA 94509-1606

Mortgage

Document Number	0000251723
Date	Sep 9, 2021
Instrument	2021-251723

Lender

Name	AMERISAVE MORTGAGE CORP
Type	Mortgage Company
Address	ATLANTA, GA 30305

Agreement

Type	Conventional Mortgage
Amount	Amount on Record
Term	181 Months
Due	Oct 1, 2036

July 2019: Quit Claim Deed

Document Type	Quit Claim Deed
Jurisdiction	CONTRA COSTA CA
Recording Date	Jul 26, 2019
Property Address	623 W 6TH ST, ANTIOCH, CA 94509-1606
Document Number	0000116661
Instrument Date	Jul 26, 2019
Instrument	116661
Record Updated	Aug 1, 2019
Title Company	NOT AVAILABLE

Transaction

Tax	$0.00
Additional	Quitclaim

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	623 W 6TH ST ANTIOCH CA 945091606, ANTIOCH, CA 94509-1606

Tax Assessment & Valuation

The 2025 property tax bill for 623 W 6th St was $1,902 with a homeowner's exemption.

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		$128,105 (+2%) Land $57,648 Building $70,457
2025	$1,902.00 Homeowner's exemption	$125,594 Land $56,518 Building $69,076
2023	$1,779.00 (+1.31%) Homeowner's exemption	$120,719 Land $54,324 Building $66,395
2022	$1,756.00

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

Flood

FEMA maps place 623 W 6th St in Zone X, an area of minimal flood risk, though there have been 47 flood claims nearby since 1982.

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
Flood Insurance Cost	Premium on File median of 16 policies
Nearby Flood Policies	16 in force
Nearby Flood Claims	47 (1982–2022)
Claims Outside the SFHA	15 of 47
Most Recent Claim	Dec 2022 · Severe Winter Storms, Flooding, Landslides, And Mudslides
Claims by Event	Severe Winter Storms, Flooding, And Mudslides, Feb 2017 · 4 claims Severe Storms, Flooding, Mudslides, And Landslides, Jan 2006 · 5 claims Coastal Storms, Floods, Slides & Tornadoes, Feb 1983 · 5 claims

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

The area around 623 W 6th St has no burnable land within ember reach, so its wildfire risk is not rated.

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

Provider	Max Down / Up (Mbps)
AT&T Fiber · DSL in parts of the area	5,000 / 5,000
Xfinity Cable	2,000 / 250
Unwired Fixed Wireless	300 / 25

May also be available: T-Mobile, Verizon.

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