10 Helmuth Ln, Antioch, CA 94509 Property Records

Contra Costa County property record for 10 Helmuth Ln, Antioch, CA 94509

Property Summary

Property Type	Single Family Home
Details	2 bd · 2 ba · 977 sqft · built 1991
Lot Size	0.1 acres (4,356 sqft)
Owner	2 Individual Names on Record
Last Sale	$170,000 (Jul 2013)
Tax Bill	$2,898 (2025)
Deeds & Mortgages	Oct 2020 Mortgage
Flood Zone	Zone X (minimal risk)
APN	`068-041-030-5`

Property Details

APN / Parcel Number

Primary APN	`068-041-030-5`
Alternative APN	`068-041-030`

Interior

Bedrooms	2 Beds
Full Baths	2 Baths
Total Rooms	5 Rooms
Stories	1 Story
Building Area	977 sqft Living Area
1st Floor Area	977 sqft

Exterior

Year Built	Built 1991
Effective Year Built	Effective 1991
Lot Area	4,356 sqft (0.1 acres)
Garage Type	Attached
Garage Area	430 sqft
Parking Spaces	2 Parking Spaces

Utilities, Heating & Cooling

Cooling System	Central

Location & Zoning

Street Address	10 HELMUTH LN
City	ANTIOCH
State	CA
Zip	94509-2638
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	R1
Legal Description	PCL MAP 144 PG 41 PCL B
Legal Tract	144PM41
Jurisdiction	CONTRA COSTA CA
Township / Civil Division	ANTIOCH-PITTSBURG
Census Block Group	2
Census Block	2007
Census Tract	306003

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	10 HELMUTH LN, ANTIOCH, CA 94509-2638
Occupancy	Owner Occupied
Owner Type	Individual
Vesting	Joint Tenants with Right of Survivorship

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Jul 17, 2013 · Amount on Record
Deed Sale	Jul 17, 2013 · Amount on Record
Prior Sale	Dec 29, 2008 · Amount on Record
Deed Document Number	2013178810
Last Transfer Date	Apr 10, 2020
Transfer Doc	0000231338
Record Updated	Oct 29, 2026

October 2020: Intrafamily Transfer, Transfer

Document Type	Intrafamily Transfer
Jurisdiction	CONTRA COSTA CA
Recording Date	Oct 8, 2020
Property Address	10 HELMUTH LN, ANTIOCH, CA 94509-2638
Document Number	0000231338
Map Reference	MB 144 PG 41
Instrument Date	Apr 10, 2020
Instrument	2020-231338
Transaction Type	Transfer
Record Updated	Nov 3, 2022
Title Company	FIRST AMERICAN TITLE INS CO

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	Joint Tenants with Right of Survivorship
Address	4795 REGENT BLVD, IRVING, TX 75063-2467

Mortgage

Document Number	0000231339
Date	Oct 8, 2020
Instrument	2020-231339

Lender

Name	USAA FSB
Type	Bank

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	175 Months
Due	May 1, 2035

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		$212,551 (+2%) Land $70,013 Building $142,538
2025	$2,898.00 (+5.92%)	$208,385 (+4.04%) Land $68,641 Building $139,744
2023	$2,736.00 (+1.41%)	$200,295 Land $65,977 Building $134,318
2022	$2,698.00

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 741 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: Verizon.

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