5443 Trimonti Cir, Antioch, CA 94531 Property Records

Contra Costa County property record for 5443 Trimonti Cir, Antioch, CA 94531

Property Summary

Property Type	Single Family Home
Details	4 bd · 2 ba · 1,660 sqft · built 2022
Lot Size	0.124 acres (5,385 sqft)
Owner	2 Company Names on File
Last Sale	$681,000 (Dec 2022)
Tax Bill	$9,325 (2025)
Deeds & Mortgages	Dec 2022 Sale & Mortgage
Flood Zone	Zone X (minimal risk)
APN	`057-160-086-5`

Property Details

APN / Parcel Number

Primary APN	`057-160-086-5`
Alternative APN	`057-160-086`

Interior

Bedrooms	4 Beds
Full Baths	2 Baths
Total Rooms	7 Rooms
Stories	1 Story
Building Area	1,660 sqft Living Area
1st Floor Area	1,660 sqft

Exterior

Year Built	Built 2022
Effective Year Built	Effective 2022
Lot Area	5,385 sqft (0.124 acres)
Garage Type	Attached
Garage Area	459 sqft
Parking Spaces	2 Parking Spaces

Location & Zoning

Street Address	5443 TRIMONTI CIR
City	ANTIOCH
State	CA
Zip	94531-5001
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Description	T9489 L458
Legal Subdivision	AVIAN SUB 9489 PH 3
Legal Tract	9489
Jurisdiction	CONTRA COSTA CA
Township / Civil Division	EAST CONTRA COSTA
Census Block Group	2
Census Block	2016
Census Tract	303207

Owner

Source: Contra Costa County records · APN 057-160-086-5

Assessment roll updated July 14, 2026 · Last verified July 2026

Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.

Owner of Record	2 Company Names on File
Mailing Address	5443 TRIMONTI CIR, ANTIOCH, CA 94531-5001
Occupancy	Owner Occupied
Owner Type	Company
Vesting	Life Tenant

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	2 Verified Names on Deed
Last Sale	Dec 21, 2022 · Amount on Record
Deed Sale	Dec 21, 2022 · Amount on Record
Deed Document Number	2022186359
Last Transfer Date	Aug 17, 2024
Transfer Doc	0000082202
Record Updated	Sep 20, 2026

December 2022: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	CONTRA COSTA CA
Recording Date	Dec 21, 2022
Property Address	5443 TRIMONTI CIR, ANTIOCH, CA 94531-5001
Document Number	0000186359
Map Reference	MB 546 PG 9-25
Instrument Date	Nov 25, 2022
Instrument	2022-186359
Transaction Type	Transfer
Record Updated	Aug 01, 2023
Title Company	FIRST AMERICAN TITLE COMPANY HOMEBU, FIRST AMER TTL CO HOMEBUILDE

Transaction

Amount	Amount Recorded
Downpayment	Downpayment on File
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	5443 TRIMONTI CIR, ANTIOCH, CA 94531-5001

Mortgage

Document Number	0000186360
Date	Dec 21, 2022
Instrument	2022-186360

Lender

Name	HOMEBRIDGE FINANCIAL SERVICES INC
Type	Mortgage Company

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	361 Months
Due	Jan 01, 2053

Tax Assessment & Valuation

Source: Contra Costa County records · Assessment roll updated July 14, 2026 · Last verified July 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

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

Year	Tax Bill	Assessed Value
2026		$722,682 (+2%) Land $265,302 Building $457,380
2025	$9,325.00 (+11.46%) Homeowner's exemption	$708,512 (+4.04%) Land $260,100 Building $448,412
2023	$8,366.00 (+544.03%) Homeowner's exemption	$681,000 Land $250,000 Building $431,000
2022	$1,299.00

Flood & Wildfire

Source: FEMA National Flood Hazard Layer as of October 12, 2026 · FEMA NFIP claims and policies as of September 2026 · USDA Forest Service Wildfire Risk to Communities as of 2024 · Last verified October 2026

Flood

FEMA Flood Zone	Zone X minimal risk
Flood Insurance Requirement	Not required lenders may require it
Nearby Flood Policies	2 in force

Wildfire

Wildfire Risk	High above 78% of the US · above 55% of California
Wildfire Likelihood	0.5% annual chance
Exposure	Direct burnable vegetation at the parcel

Values are read at the parcel center point; flood claims are located to the census block group, not this parcel; lenders make the official flood determination.

Historic Designation

Source: NPS National Register of Historic Places as of August 1, 2026 · Last verified October 2026

Historic District	Within the Shannon-Williamson Ranch listed 1987 · 12 contributing resources · NRIS 87000003

Federal listing alone does not restrict alterations; local historic district rules, which this data does not cover, may apply.

Internet Providers

Source: FCC Broadband Data Collection as of December 31, 2025 · Last verified October 2026

Provider	Max Down / Up (Mbps)
AT&T Fiber	5,000 / 5,000
Xfinity Cable	2,000 / 250
Unwired Fixed Wireless	300 / 25

May also be available: Verizon.

Based on FCC filings for 331 locations within half a mile of this property.

Cell Coverage

5G (outdoors only) and 4G LTE

Drinking Water

Source: EPA Safe Drinking Water Information System as of 2026 Q3 · EPA water system boundaries as of March 2026 · Last verified October 2026

Water System	CITY OF ANTIOCH serves 116,781 people
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 as reported to EPA, not water tested at this address; lead at the tap also depends on the building's own pipes. The full violation and enforcement history is in the system's EPA record.