5 Helmuth Ln, Antioch, CA 94509 Property Records

Contra Costa County property record for 5 Helmuth Ln, Antioch, CA 94509

Property Summary

Property Type	Single Family Home
Details	1 bd · 1 ba · 624 sqft · built 1942
Lot Size	0.047 acres (2,058 sqft)
Owner	Company Name on File
Tax Bill	$1,590 (2025)
Flood Zone	Zone X (minimal risk)
APN	`068-041-009-9`

Property Details

APN / Parcel Number

Primary APN	`068-041-009-9`
Alternative APN	`068-041-009`

Interior

Bedrooms	1 Bed
Full Baths	1 Bath
Total Rooms	4 Rooms
Stories	1 Story
Building Area	624 sqft Living Area
1st Floor Area	624 sqft

Exterior

Year Built	Built 1942
Effective Year Built	Effective 1942
Lot Area	2,058 sqft (0.047 acres)
Lot Dimensions	49 ft deep x 42 ft wide
Garage Type	Attached
Garage Area	240 sqft
Parking Spaces	1 Parking Space

Utilities, Heating & Cooling

Heating System	Floor/Wall Furnace

Location & Zoning

Street Address	5 HELMUTH LN
City	ANTIOCH
State	CA
Zip	94509-2637
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	R1
Legal Description	POR SW QR SEC 19 T2N R2E 64 FT X 42 FT
Legal Range	02E
Legal Township	02N
Legal Section	19
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 · APN 068-041-009-9

Assessment roll updated July 14, 2026 · Last verified July 2026

Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.

Owner of Record	Company Name on File
Mailing Address	3106 SAN JUAN CT, ANTIOCH, CA 94509-5313
Owner Type	Company
Vesting	Trust

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	Verified Name on Deed
Record Updated	Sep 20, 2026

Tax Assessment & Valuation

Source: Contra Costa County records · Assessment roll updated July 14, 2026 · Last verified July 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

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

Year	Tax Bill	Assessed Value
2026		$93,181 (+2%) Land $30,013 Building $63,168
2025	$1,590.00 (+7.22%)	$91,355 (+4.04%) Land $29,425 Building $61,930
2023	$1,483.00 (+1.16%)	$87,810 Land $28,284 Building $59,526
2022	$1,466.00

Flood & Wildfire

Source: FEMA National Flood Hazard Layer, Contra Costa County (06013C), as of October 12, 2026 · USDA Forest Service Wildfire Risk to Communities, 2nd edition, as of 2020 · Last verified October 2026

Flood

FEMA Flood Zone	Zone X minimal risk
Flood Insurance Requirement	Not required lenders may require it

Wildfire

Wildfire Risk	Not rated no burnable land within ember reach

Values are read at the parcel center point; lenders make the official flood determination.

Internet Providers

Source: FCC Broadband Data Collection as of December 31, 2025 · Last verified October 2026

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.

Based on FCC filings for 741 locations within half a mile of this property.

Drinking Water

Source: EPA Safe Drinking Water Information System, water system CA0710001, as of 2026 Q3 · EPA water system boundaries as of March 2026 · Last verified October 2026

Water System	CITY OF ANTIOCH serves 116,781 people
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 as reported to EPA, not water tested at this address; lead at the tap also depends on the building's own pipes. The full violation and enforcement history is in the system's EPA record.