5331 Trimonti Cir, Antioch, CA 94531 Property Records

Contra Costa County property record for 5331 Trimonti Cir, Antioch, CA 94531

Property Summary

Property Type	Single Family Home
Details	5 bd · 3.5 ba · 2,949 sqft · built 2021
Lot Size	0.208 acres (9,069 sqft)
Owner	2 Individual Names on File
Last Sale	$857,500 (Feb 2022)
Tax Bill	$10,925 (2025)
Deeds & Mortgages	Feb 2022 Sale & Mortgage
Flood Zone	Zone X (minimal risk)
APN	`057-150-005-7`

Property Details

APN / Parcel Number

Primary APN	`057-150-005-7`
Alternative APN	`057-150-005`

Interior

Bedrooms	5 Beds
Full Baths	3.5 Baths
Half Baths	1 Half Bath
Total Rooms	13 Rooms
Stories	2 Stories
Building Area	2,949 sqft Living Area
1st Floor Area	1,494 sqft
2nd Floor Area	1,455 sqft

Exterior

Year Built	Built 2021
Effective Year Built	Effective 2022
Lot Area	9,069 sqft (0.208 acres)
Garage Type	Attached
Garage Area	614 sqft
Parking Spaces	2 Parking Spaces

Location & Zoning

Street Address	5331 TRIMONTI CIR
City	ANTIOCH
State	CA
Zip	94531-8730
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Description	T9449 L250
Legal Subdivision	AVIANO SUB 9449 PH 2
Legal Tract	9449
Jurisdiction	CONTRA COSTA CA
Township / Civil Division	EAST CONTRA COSTA
Census Block Group	2
Census Block	2016
Census Tract	303207

Historic Designation

Source: NPS National Register of Historic Places, as of August 1, 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.

Owner

5331 Trimonti Cir is owned and occupied by two individuals who bought it in February 2022.

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

Owner of Record	2 Individual Names on File
Mailing Address	5331 TRIMONTI CIR, ANTIOCH, CA 94531-8730
Occupancy	Owner Occupied
Owner Type	Individual
Vesting	Joint Tenants

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	2 Names on Deed
Last Sale	Feb 4, 2022 · Amount on File
Deed Sale	Feb 4, 2022 · Amount on File
Deed Document Number	202222687
Record Updated	Sep 20, 2026

February 2022: Grant Deed, Subdivision Related Transfer

Document Type	Grant Deed
Jurisdiction	CONTRA COSTA CA
Recording Date	Feb 4, 2022
Property Address	5331 TRIMONTI CIR, ANTIOCH, CA 94531-8730
Document Number	0000022687
Map Reference	MB 544 PG 21-36
Instrument Date	Jan 27, 2022
Instrument	2022-022687
Transaction Type	Subdivision Related Transfer
Record Updated	Aug 1, 2023
Title Company	LENNAR TITLE INC

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
Relationship	Joint Tenants
Address	2827 E COG HILL TER, DUBLIN, CA 94568-1189

Mortgage

Document Number	0000022688
Date	Feb 4, 2022
Instrument	2022-022688

Lender

Name	LENNAR MORTGAGE LLC
Type	Mortgage Company

Agreement

Type	Conventional Mortgage
Amount	Amount on Record
Term	361 Months
Due	Mar 1, 2052

Tax Assessment & Valuation

The 2025 property tax bill for 5331 Trimonti Cir was $10,925 with a homeowner's exemption.

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		$802,000 (-6.85%) Land $231,257 Building $570,743
2025	$10,925.00 Homeowner's exemption	$861,000 Land $248,269 Building $612,731
2023	$9,502.00 (+16.23%) Homeowner's exemption	$747,000 Land $215,000 Building $532,000
2022	$8,175.00

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

Flood

FEMA maps place 5331 Trimonti Cir in Zone X, an area of minimal flood risk.

Source: FEMA National Flood Hazard Layer, effective October 12, 2026 · OpenFEMA NFIP redacted claims and policies, as of September 2026

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

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.

Wildfire

Wildfire risk around 5331 Trimonti Cir is high, ranking above 75% of the US, with a 0.4% annual chance of wildfire.

Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024

Wildfire Risk	High above 75% of the US · above 51% of California
Wildfire Likelihood	0.4% annual chance
Exposure	Direct burnable vegetation

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 331 locations within half a mile, as of December 31, 2025

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.

Cell Coverage

5G (outdoors only) and 4G LTE

Nearby Properties on Trimonti Cir

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