421 W 5th St, Antioch, CA 94509 Property Records

Contra Costa County property record for 421 W 5th St, Antioch, CA 94509

Property Summary

Property Type	Single Family Home
Details	4 bd · 1 ba · 1,560 sqft · built 1906
Lot Size	0.115 acres (5,000 sqft)
Owner	2 Individual Names on File
Last Sale	$375,000 (Apr 2019)
Tax Bill	$5,246 (2025)
Deeds & Mortgages	May 2024 Second Mortgage Sep 2021 Mortgage + 2 more
Flood Zone	Zone X (minimal risk)
APN	`066-148-010-3`

Property Details

APN / Parcel Number

Primary APN	`066-148-010-3`
Alternative APN	`066-148-010`

Interior

Bedrooms	4 Beds
Full Baths	1 Bath
Total Rooms	7 Rooms
Stories	2 Stories
Building Area	1,560 sqft Living Area
1st Floor Area	1,164 sqft
2nd Floor Area	396 sqft

Exterior

Year Built	Built 1906
Effective Year Built	Effective 1920
Lot Area	5,000 sqft (0.115 acres)
Garage Type	Attached
Garage Area	200 sqft
Parking Spaces	1 Parking Space

Utilities, Heating & Cooling

Heating System	Central

Location & Zoning

Street Address	421 W 5TH ST
City	ANTIOCH
State	CA
Zip	94509-1233
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	C2
Legal Description	TOWN OF ANTIOCH LOT 6 BLK 30
Legal Subdivision	ANTIOCH
Legal Block	30
Legal Lot Number	6
Jurisdiction	CONTRA COSTA CA
Township / Civil Division	ANTIOCH-PITTSBURG
Census Block Group	3
Census Block	3050
Census Tract	305000

Owner

421 W 5th St is owned and occupied by two individuals who bought it in April 2019.

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

Owner of Record	2 Individual Names on File
Mailing Address	421 W 5TH ST, ANTIOCH, CA 94509-1233
Occupancy	Owner Occupied
Owner Type	Individual
Vesting	Joint Tenants

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

Deeds, Mortgages & Sale History

Date	Document
May 1, 2024	Deed of Trust, Mortgage · Stand-Alone Second Mortgage DISCOVER BANK
Sep 14, 2021	Deed of Trust, Mortgage · Conventional Mortgage GUARANTEED RATE INC
Apr 18, 2019	Grant Deed, Transfer · Conventional Mortgage FINANCE OF AMERICA MORTGAGE LLC
Jun 23, 2017	Quit Claim Deed, Transfer ATTORNEY ONLY

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Apr 18, 2019 · Amount on File
Deed Sale	Apr 18, 2019 · Amount on File
Prior Sale	Jul 2, 2010 · Amount on File
Deed Document Number	201954016
Prior Transfer Date	Jun 19, 2017
Prior Transfer Doc	0000113341
Record Updated	Oct 29, 2026

May 2024: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	CONTRA COSTA CA
Property Address	421 W 5TH ST, ANTIOCH, CA 94509-1233
Transaction Type	Mortgage
Record Updated	May 17, 2024

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	421 W 5TH ST, ANTIOCH, CA 94509-1233

Mortgage

Document Number	0000040664
Date	May 1, 2024
Instrument	2024-040664

Lender

Name	DISCOVER BANK
Type	Bank
Address	GREENWOOD, DE 19950

Agreement

Type	Stand-Alone Second Mortgage
Amount	Amount on Record
Term	359 Months
Due	Apr 24, 2054

September 2021: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	CONTRA COSTA CA
Property Address	421 W 5TH ST, ANTIOCH, CA 94509-1233
Transaction Type	Mortgage
Record Updated	Nov 3, 2022
Title Company	ORANGE COAST TITLE

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	421 W 5TH ST, ANTIOCH, CA 94509-1233

Mortgage

Document Number	0000255083
Date	Sep 14, 2021
Instrument	2021-255083

Lender

Name	GUARANTEED RATE INC
Type	Mortgage Company
Address	CHICAGO, IL 60613

Agreement

Type	Conventional Mortgage
Amount	Amount on Record
Term	361 Months
Due	Oct 1, 2051

April 2019: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	CONTRA COSTA CA
Recording Date	Apr 18, 2019
Property Address	421 W 5TH ST, ANTIOCH, CA 94509-1233
Document Number	0000054016
Instrument Date	Apr 16, 2019
Instrument	2019-054016
Transaction Type	Transfer
Record Updated	Nov 3, 2022
Title Company	FIDELITY NATIONAL TITLE CO

Transaction

Amount	Amount 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	421 W 5TH ST, ANTIOCH, CA 94509-1233

Mortgage

Document Number	0000054017
Date	Apr 18, 2019
Instrument	2019-054017

Lender

Name	FINANCE OF AMERICA MORTGAGE LLC
Type	Mortgage Company

Agreement

Type	Conventional Mortgage
Amount	Amount on Record
Term	361 Months
Due	May 1, 2049

Mortgage

Document Number	0000054018
Date	Apr 18, 2019
Instrument	2019-054018

Lender

Name	FINANCE OF AMERICA MORTGAGE LLC
Type	Mortgage Company
Address	HORSHAM, PA 19044

Agreement

Type	Second Mortgage (Down Payment)
Amount	Amount on Record

June 2017: Quit Claim Deed, Transfer

Document Type	Quit Claim Deed
Jurisdiction	CONTRA COSTA CA
Recording Date	Jun 23, 2017
Property Address	421 W 5TH ST, ANTIOCH, CA 94509-1233
Document Number	0000113341
Instrument Date	Jun 19, 2017
Instrument	113341
Transaction Type	Transfer
Record Updated	Jul 7, 2017
Title Company	ATTORNEY ONLY

Transaction

Tax	$0.00
Additional	Quitclaim Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Revocable Trust
Address	309 W 4TH ST ANTIOCH CA 945091242, ANTIOCH, CA 94509-1242

Tax Assessment & Valuation

The 2025 property tax bill for 421 W 5th St was $5,246.

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		$426,680 (+2%) Land $227,563 Building $199,117
2025	$5,246.00	$418,314 Land $223,101 Building $195,213
2023	$4,987.00 (+1.59%)	$402,073 Land $214,439 Building $187,634
2022	$4,909.00

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

Flood

FEMA maps place 421 W 5th St in Zone X, an area of minimal flood risk, though there have been 1 flood claim nearby since 2017.

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 Policies	5 in force
Nearby Flood Claims	1 (2017)
Most Recent Claim	Feb 2017 · Severe Winter Storms, Flooding, And Mudslides

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 421 W 5th 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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