1111 A St, Antioch, CA 94509 Property Records

Contra Costa County property record for 1111 A St, Antioch, CA 94509

Property Summary

Property Type	Medical Building
Details	4,945 sqft · built 1955
Lot Size	0.31 acres (13,503 sqft)
Owner	2 Company Names on File
Tax Bill	$5,693 (2025)
Deeds & Mortgages	Apr 2026 Sale Mar 2017 Sale
Flood Zone	Zone X (minimal risk)
APN	`065-071-014-8`

Property Details

APN / Parcel Number

Primary APN	`065-071-014-8`
Alternative APN	`065-071-014`

Interior

Total Rooms	1 Room
Stories	1 Story
Building Area	4,945 sqft Gross Area
1st Floor Area	4,945 sqft

Exterior

Year Built	Built 1955
Effective Year Built	Effective 1955
Exterior Material	Wood Siding
Construction Type	Frame
Roof Type	Gable
Roof Material	Wood Shingle
Lot Area	13,503 sqft (0.31 acres)

Utilities, Heating & Cooling

Cooling System	Central
Heating System	Forced Air with A/C

Location & Zoning

Street Address	1111 A ST
City	ANTIOCH
State	CA
Zip	94509-2324
Property Category	Commercial
Property Type	Commercial > Office > Medical Building
Legal Description	POR NW QR OF NW QR SEC 19 T2NR2E MDBM .31 AC
Legal Range	02E
Legal Township	02N
Legal Section	19
Legal Subdivision	BEEDE 01
Legal Lot Number	3
Jurisdiction	CONTRA COSTA CA
Township / Civil Division	ANTIOCH-PITTSBURG
Census Block Group	1
Census Block	1006
Census Tract	306003

Owner

1111 A St, a commercial property, is owned by a company that acquired it in April 2015.

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

Owner of Record	2 Company Names on File
Mailing Address	1843 MOUNT CONNESS WAY, ANTIOCH, CA 94531-7488
Owner Type	Company
Vesting	Life Tenant

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
Apr 23, 2026	Grant Deed, Transfer NONE LISTED ON DOCUMENT
Mar 8, 2017	Grant Deed, Transfer OLD REPUBLIC TITLE

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Transfer Date	Apr 30, 2015
Transfer Doc	0000109199
Record Updated	Sep 20, 2026

April 2026: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	CONTRA COSTA CA
Recording Date	Apr 23, 2026
Property Address	1111 A ST, ANTIOCH, CA 94509-2324
Document Number	0000041786
Instrument Date	Apr 23, 2026
Instrument	202641786
Transaction Type	Transfer
Record Updated	Jul 12, 2026
Title Company	NONE LISTED ON DOCUMENT

Transaction

Tax	$0.00
Amount Accuracy	Full Amount Stated
Additional	Arm's Length Multiple Parcels

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Life Tenant
Address	1843 MOUNT CONNESS WAY, ANTIOCH, CA 94531-7488

March 2017: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	CONTRA COSTA CA
Recording Date	Mar 8, 2017
Property Address	1111 A ST, ANTIOCH, CA 94509-2324
Document Number	0000041322
Instrument Date	Feb 21, 2017
Instrument	41322
Transaction Type	Transfer
Record Updated	Mar 15, 2017
Title Company	OLD REPUBLIC TITLE

Transaction

Amount	Amount on Record
Tax	$561.00
Amount Accuracy	Full Value
Additional	Arm's Length Multiple Parcels

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Tenants in Common
Address	PO BOX 5199 SAN MATEO CA 944020199, SAN MATEO, CA 94402-0199

Tax Assessment & Valuation

The 2025 property tax bill for 1111 A St was $5,693.

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		$458,122 (+2%) Land $268,717 Building $189,405
2025	$5,693.00	$449,141 Land $263,449 Building $185,692
2023	$5,416.00 (+1.58%)	$431,702 Land $253,220 Building $178,482
2022	$5,332.00

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

Flood

FEMA maps place 1111 A St in Zone X, an area of minimal flood risk.

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

The area around 1111 A 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 593 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
T-Mobile Fixed Wireless	100 / 20

May also be available: Verizon.

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