3109 Brook Ct, Antioch, CA 94509 Property Records

Contra Costa County property record for 3109 Brook Ct, Antioch, CA 94509

Property Summary

Property Type	Single Family Home
Details	3 bd · 2 ba · 1,677 sqft · built 1977
Lot Size	0.25 acres (10,880 sqft)
Owner	2 Individual Names on Record
Last Sale	$640,000 (Aug 2026)
Tax Bill	$7,729 (2025)
Deeds & Mortgages	Aug 2026 Sale & Mortgage Sep 2022 Mortgage + 1 more
Flood Zone	Zone X (minimal risk)
APN	`071-341-018-1`

Property Details

APN / Parcel Number

Primary APN	`071-341-018-1`
Alternative APN	`071-341-018`

Interior

Bedrooms	3 Beds
Full Baths	2 Baths
Total Rooms	8 Rooms
Stories	2 Stories
Building Area	1,677 sqft Living Area
1st Floor Area	1,197 sqft
2nd Floor Area	480 sqft

Exterior

Year Built	Built 1977
Effective Year Built	Effective 1981
Lot Area	10,880 sqft (0.25 acres)
Garage Type	Attached
Garage Area	515 sqft
Parking Spaces	2 Parking Spaces

Utilities, Heating & Cooling

Cooling System	Central

Location & Zoning

Street Address	3109 BROOK CT
City	ANTIOCH
State	CA
Zip	94509-5915
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	R1
Legal Description	TRACT 4304 LOT 626 EX MR
Legal Subdivision	SUBDIVISION 4304
Legal Tract	4304
Legal Lot Number	626
Jurisdiction	CONTRA COSTA CA
Township / Civil Division	ANTIOCH-PITTSBURG
Census Block Group	3
Census Block	3001
Census Tract	307101

Owner

Source: Contra Costa County records, as of August 20, 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	3109 BROOK CT, ANTIOCH, CA 94509-5915
Occupancy	Owner Occupied
Owner Type	Individual
Vesting	Joint Tenants

Deeds, Mortgages & Sale History

Date	Document
Aug 12, 2026	Grant Deed, Transfer · FHA Mortgage MLD MORTGAGE INC
Sep 29, 2022	Deed of Trust, Mortgage · FHA Mortgage GUARANTEED RATE INC
Oct 27, 2022	Grant Deed, Transfer · Conventional Mortgage UNITED WHOLESALE MORTGAGE

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Aug 12, 2026 · Amount on Record
Deed Sale	Aug 12, 2026 · Amount on Record
Prior Sale	Oct 27, 2022 · Amount on Record
Deed Document Number	202685028
Prior Transfer Date	Aug 4, 2008
Prior Transfer Doc	0000184652
Record Updated	Sep 20, 2026

August 2026: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	CONTRA COSTA CA
Recording Date	Aug 12, 2026
Property Address	3109 BROOK CT, ANTIOCH, CA 94509-5915
Document Number	0000085028
Instrument Date	Aug 10, 2026
Instrument	202685028
Transaction Type	Transfer
Record Updated	Aug 20, 2026
Title Company	CHICAGO TITLE W, CHICAGO TITLE

Transaction

Amount	Amount Recorded
Loan-to-Value (LTV)	LTV on Record
Tax	$71,104.00
Amount Accuracy	Full Amount Stated
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Joint Tenants
Address	3109 BROOK CT, ANTIOCH, CA 94509-5915

Mortgage

Document Number	0000085029,
Date	Aug 12, 2026
Instrument	202685029

Lender

Name	MLD MORTGAGE INC

Agreement

Type	FHA Mortgage
Amount	Amount Recorded
Term	360 Months
Due	Sep 1, 2056

Interest

Rate	6.43%
Max Rate	-1%

Mortgage

Document Number	0000085030,
Date	Aug 12, 2026
Instrument	202685030

Lender

Name	MLD MORTGAGE INC

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	120 Months
Due	Sep 1, 2036

Interest

Rate	6.43%
Max Rate	-1%

September 2022: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	CONTRA COSTA CA
Property Address	3109 BROOK CT, ANTIOCH, CA 94509-5915
Transaction Type	Mortgage
Record Updated	Aug 22, 2023
Title Company	CHICAGO TITLE COMPANY

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	1114 CRESTHAVEN CT, ANTIOCH, CA 94531-8034

Mortgage

Document Number	0000148000
Date	Sep 29, 2022
Instrument	2022-148000

Lender

Name	GUARANTEED RATE INC
Type	Mortgage Company
Address	CHICAGO, IL 60613

Agreement

Type	FHA Mortgage
Amount	Amount Recorded
Term	361 Months
Due	Oct 1, 2052

October 2022: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	CONTRA COSTA CA
Recording Date	Oct 27, 2022
Property Address	3109 BROOK CT, ANTIOCH, CA 94509-5915
Document Number	0000166888
Map Reference	MB 167 PG 1
Instrument Date	Oct 20, 2022
Instrument	2022-166888
Transaction Type	Transfer
Record Updated	Nov 4, 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	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Community Property with Right of Survivorship
Address	1049 SPRUCE ST, BERKELEY, CA 94707-2627

Mortgage

Document Number	0000166889
Date	Oct 27, 2022
Instrument	2022-166889

Lender

Name	UNITED WHOLESALE MORTGAGE
Type	Mortgage Company

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	361 Months
Due	Nov 1, 2052

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		$652,642 (+2%) Land $275,914 Building $376,728
2025	$7,729.00 (+4.91%)	$639,846 (+4.04%) Land $270,504 Building $369,342
2023	$7,367.00 (+51.24%)	$615,000 Land $260,000 Building $355,000
2022	$4,871.00

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
Nearest Special Flood Hazard Area	Zone AE, within 100 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

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 582 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

May also be available: AT&T.

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