820 Gatter Ct, Antioch, CA 94509 Property Records

Contra Costa County property record for 820 Gatter Ct, Antioch, CA 94509

Property Summary

Property Type	Single Family Home
Details	4 bd · 2.5 ba · 2,095 sqft · built 1979
Lot Size	0.152 acres (6,600 sqft)
Owner	Individual Name on File
Last Sale	$350,000 (Aug 2023)
Tax Bill	$5,764 (2025)
Deeds & Mortgages	Aug 2023 Sale & Mortgage
Flood Zone	Zone X (minimal risk)
APN	`071-381-002-6`

Property Details

APN / Parcel Number

Primary APN	`071-381-002-6`
Alternative APN	`071-381-002`

Interior

Bedrooms	4 Beds
Full Baths	2.5 Baths
Half Baths	1 Half Bath
Total Rooms	8 Rooms
Stories	2 Stories
Building Area	2,095 sqft Living Area
1st Floor Area	1,027 sqft
2nd Floor Area	1,068 sqft

Exterior

Year Built	Built 1979
Effective Year Built	Effective 1980
Lot Area	6,600 sqft (0.152 acres)
Garage Type	Attached
Garage Area	545 sqft
Parking Spaces	2 Parking Spaces

Location & Zoning

Street Address	820 GATTER CT
City	ANTIOCH
State	CA
Zip	94509-5457
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	R1
Legal Description	TRACT 4740 POR LOT 645 EX MR
Legal Subdivision	SUBDIVISION 4740
Legal Tract	4740
Legal Lot Number	645
Jurisdiction	CONTRA COSTA CA
Township / Civil Division	ANTIOCH-PITTSBURG
Census Block Group	3
Census Block	3001
Census Tract	307101

Owner

820 Gatter Ct is owned and occupied by an individual who acquired it in January 2025.

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

Owner of Record	Individual Name on File
Mailing Address	820 GATTER CT, ANTIOCH, CA 94509-5457
Occupancy	Owner Occupied
Owner Type	Individual
Vesting	Sole Owner

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

Assessor's Deed Record

Deed Names	Name on Deed
Last Sale	Aug 14, 2023 · Amount on File
Deed Sale	Aug 14, 2023 · Amount on File
Deed Document Number	202377719
Last Transfer Date	Jan 24, 2025
Transfer Doc	0000008676
Record Updated	Oct 29, 2026

August 2023: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	CONTRA COSTA CA
Recording Date	Aug 14, 2023
Property Address	820 GATTER CT, ANTIOCH, CA 94509-5457
Document Number	0000077719
Map Reference	MB 199 PG 5
Instrument Date	Aug 10, 2023
Instrument	2023-077719
Transaction Type	Transfer
Record Updated	Aug 22, 2023
Title Company	OLD REPUBLIC TITLE, OLD REPUBLIC TITLE COMPANY

Transaction

Amount	Amount on Record
Downpayment	Downpayment on Record
Loan-to-Value (LTV)	LTV on Record
Tax	$0.00
Amount Accuracy	Rounded by County
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	817 GATTER CT, ANTIOCH, CA 94509-5458

Mortgage

Document Number	0000077720
Date	Aug 14, 2023
Instrument	2023-077720

Lender

Name	MABEL MARTINEZ
Type	Seller

Agreement

Type	Seller Carry-Back
Amount	Amount on Record

Tax Assessment & Valuation

The 2025 property tax bill for 820 Gatter Ct was $5,764.

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		$473,382 (+2%) Land $176,868 Building $296,514
2025	$5,764.00	$464,100 Land $173,400 Building $290,700
2023	$3,428.00 (-38.02%) Homeowner's exemption	$268,743 Land $44,957 Building $223,786
2022	$5,531.00

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

Flood

FEMA maps place 820 Gatter Ct in Zone X, an area of minimal flood risk, within 500 ft of a high-risk flood zone.

Source: FEMA National Flood Hazard Layer, effective October 12, 2026

FEMA Flood Zone	Zone X minimal risk
Nearest Special Flood Hazard Area	Zone AE, within 500 ft
Flood Insurance Requirement	Not required lenders may require it

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

Wildfire

Wildfire risk around 820 Gatter Ct is low, with a 0.01% annual chance of 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 561 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
Xfinity Cable	2,000 / 250
Unwired Fixed Wireless	300 / 25
Verizon Fixed Wireless	300 / 20
AT&T DSL · Fiber in parts of the area	100 / 20