817 W 11th St, Antioch, CA 94509 Property Records

Contra Costa County property record for 817 W 11th St, Antioch, CA 94509

Property Summary

Property Type	Single Family Home
Details	2 bd · 1 ba · 857 sqft · built 1943
Lot Size	0.104 acres (4,510 sqft)
Owner	Individual on Record
Last Sale	$253,000 (Feb 2017)
Tax Bill	$3,775 (2025)
Deeds & Mortgages	Feb 2017 Sale & Mortgage
Flood Zone	Zone X (minimal risk)
APN	`067-155-003-6`

Property Details

APN / Parcel Number

Primary APN	`067-155-003-6`
Alternative APN	`067-155-003`

Interior

Bedrooms	2 Beds
Full Baths	1 Bath
Total Rooms	4 Rooms
Stories	1 Story
Building Area	857 sqft Living Area
1st Floor Area	857 sqft

Exterior

Year Built	Built 1943
Effective Year Built	Effective 1943
Lot Area	4,510 sqft (0.104 acres)
Garage Type	Attached
Garage Area	245 sqft
Parking Spaces	1 Parking Space

Location & Zoning

Street Address	817 W 11TH ST
City	ANTIOCH
State	CA
Zip	94509-1510
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	R1
Legal Description	MC FARLAND TRACT LOT 3 BLK E
Legal Subdivision	MCFARLAND
Legal Block	E
Legal Lot Number	3
Jurisdiction	CONTRA COSTA CA
Township / Civil Division	ANTIOCH-PITTSBURG
Census Block Group	1
Census Block	1001
Census Tract	307102

Owner

Source: Contra Costa County assessment roll, 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	Individual on Record
Mailing Address	817 W 11TH ST, ANTIOCH, CA 94509-1510
Occupancy	Owner Occupied
Owner Type	Individual

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	Name on Deed
Last Sale	Feb 1, 2017 · Amount on Record
Deed Sale	Feb 1, 2017 · Amount on Record
Prior Sale	Feb 13, 2015 · Amount on Record
Deed Document Number	201720293
Prior Transfer Date	Mar 16, 2006
Prior Transfer Doc	0000090262
Record Updated	Sep 20, 2026

February 2017: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	CONTRA COSTA CA
Recording Date	Feb 1, 2017
Property Address	817 W 11TH ST, ANTIOCH, CA 94509-1510
Document Number	0000020293
Map Reference	MB26 PG883
Instrument Date	Jan 19, 2017
Instrument	2017-020293
Transaction Type	Transfer
Record Updated	Jul 19, 2022
Title Company	CHICAGO 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
Address	817 W 11TH ST, ANTIOCH, CA 94509-1510

Mortgage

Document Number	0000020294
Date	Feb 1, 2017
Instrument	2017-020294

Lender

Name	PROSPECT MORTGAGE LLC
Type	Mortgage Company

Agreement

Type	FHA Mortgage
Amount	Amount Recorded
Term	360 Months
Due	Feb 1, 2047

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		$299,493 (+2%) Land $221,367 Building $78,126
2025	$3,775.00 (+5.62%) Homeowner's exemption	$293,622 (+4.04%) Land $217,027 Building $76,595
2023	$3,574.00 (+1.56%) Homeowner's exemption	$282,222 Land $208,600 Building $73,622
2022	$3,519.00

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

Provider	Max Down / Up (Mbps)
AT&T Fiber · Fixed Wireless, 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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