1859 Mount Conness Ct, Antioch, CA 94531 Property Records

Contra Costa County property record for 1859 Mount Conness Ct, Antioch, CA 94531

Property Summary

Property Type	Single Family Home
Details	4 bd · 3 ba · 2,944 sqft · built 1999
Lot Size	0.205 acres (8,924 sqft)
Owner	2 Individual Names on Record
Last Sale	$280,000 (Dec 2010)
Tax Bill	$4,434 (2025)
Deeds & Mortgages	Apr 2021 Mortgage
Flood Zone	Zone X (minimal risk)
APN	`055-480-011`

Property Details

APN / Parcel Number

Primary APN	`055-480-011`
Alternative APN	`055-480-011-0`

Interior

Bedrooms	4 Beds
Full Baths	3 Baths
Total Rooms	12 Rooms
Stories	2 Stories
Building Area	2,944 sqft Living Area
1st Floor Area	1,416 sqft
2nd Floor Area	1,528 sqft

Exterior

Year Built	Built 1999
Effective Year Built	Effective 2000
Lot Area	8,924 sqft (0.205 acres)
Garage Type	Attached
Garage Area	650 sqft
Parking Spaces	2 Parking Spaces

Utilities, Heating & Cooling

Cooling System	Central

Location & Zoning

Street Address	1859 MOUNT CONNESS CT
City	ANTIOCH
State	CA
Zip	94531-7494
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Description	T8181 L491
Legal Subdivision	SUBDIVISION 8181
Legal Tract	8181
Legal Lot Number	491
Jurisdiction	CONTRA COSTA CA
Township / Civil Division	TASSAJARA
Census Block Group	1
Census Block	1009
Census Tract	355120

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	1859 MOUNT CONNESS CT, ANTIOCH, CA 94531-7494
Occupancy	Owner Occupied
Owner Type	Individual
Vesting	Community Property

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Dec 1, 2010 · Amount on Record
Deed Sale	Dec 1, 2010 · Amount on Record
Prior Sale	Mar 29, 2005 · Amount on Record
Deed Document Number	2010270608
Last Transfer Date	Mar 14, 2021
Transfer Doc	0000114310
Record Updated	Oct 29, 2026

April 2021: Intrafamily Transfer, Transfer

Document Type	Intrafamily Transfer
Jurisdiction	CONTRA COSTA CA
Recording Date	Apr 15, 2021
Property Address	1859 MOUNT CONNESS CT, ANTIOCH, CA 94531-7494
Document Number	0000114310
Map Reference	MB 404 PG 41
Instrument Date	Mar 14, 2021
Instrument	2021-114310
Transaction Type	Transfer
Record Updated	Nov 3, 2022
Title Company	ACCOMODATION, ACCOMMODATION

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	1859 MOUNT CONNESS CT, ANTIOCH, CA 94531-7494

Mortgage

Document Number	0000114311
Date	Apr 15, 2021
Instrument	2021-114311

Lender

Name	CARDINAL FINANCIAL COMPANY LP
Type	Mortgage Company

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	180 Months
Due	Apr 1, 2036

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		$365,888 (+2%) Land $45,729 Building $320,159
2025	$4,434.00 (+6.33%)	$358,715 (+4.04%) Land $44,833 Building $313,882
2023	$4,170.00 (+1.53%)	$344,788 Land $43,093 Building $301,695
2022	$4,107.00

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	Low lower than 80% of the US · lower than 88% of California
Wildfire Likelihood	0.01% annual chance
Exposure	None beyond 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 611 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
AT&T Fiber · DSL	5,000 / 5,000
Xfinity Cable	2,000 / 250

May also be available: T-Mobile, Unwired.

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