9 Onyx Ct, O Fallon, MO 63366 Property Records

St. Charles County property record for 9 Onyx Ct, O Fallon, MO 63366

Property Summary

Property Type	Single Family Home
Details	4 bd · 4 ba · 2,117 sqft · built 2000
Lot Size	0.269 acres (11,761 sqft)
Owner	Individual Name on File
Last Sale	$284,900 (Aug 2018)
Tax Bill	$4,350 (2025)
Deeds & Mortgages	Aug 2018 Sale & Mortgage
Flood Zone	Zone X (minimal risk)
APN	`T990300238`

Property Details

APN / Parcel Number

Primary APN	`T990300238`
Alternative APN	`2-0051-8062-00-0045.0000000`

Interior

Bedrooms	4 Beds
Full Baths	4 Baths
Half Baths	1 Half Bath
Total Rooms	8 Rooms
Stories	2 Stories
Building Area	2,117 sqft Living Area
1st Floor Area	1,156 sqft
Basement Area	1,156 sqft
Finished Basement	683 sqft

Exterior

Year Built	Built 2000
Architectural Style	Other
Exterior Material	Composition/Composite
Lot Area	11,761 sqft (0.269 acres)
Terrain	Rolling
Garage Type	Attached
Parking Spaces	2 Parking Spaces
Porch	Porch
Porch Area	36 sqft
Patio Area	610 sqft

Utilities, Heating & Cooling

Sewer	Connected

Location & Zoning

Account Number	T990300238
Old Parcel Number	T990300238
Street Address	9 ONYX CT
City	O FALLON
State	MO
Zip	63366-1813
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Description	DIAMOND POINTE #3 LOT 45
Legal Range	03E
Legal Township	47N
Legal Subdivision	DIAMOND PT #3
Legal Lot Number	45
Jurisdiction	ST CHARLES MO
Township / Civil Division	O'FALLON
Census Block Group	4
Census Block	4004
Census Tract	311602

Owner

Source: St. Charles County records · APN T990300238

Assessment roll updated July 1, 2025 · Last verified March 2026

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

Owner of Record	Individual Name on File
Co-owner	Verified Secondary Owner
Mailing Address	9 ONYX CT, O FALLON, MO 63366-1813
Occupancy	Owner Occupied
Owner Type	Individual

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	2 Verified Names on Deed
Last Sale	Aug 29, 2018 · Amount on Record
Deed Sale	Aug 29, 2018 · Amount on Record
Prior Sale	Jul 20, 2016
Deed Document Number	0069692049
Deed Book / Page	6969 / 2049
Record Updated	Jun 08, 2026

August 2018: Warranty Deed, Transfer

Document Type	Warranty Deed
Jurisdiction	ST CHARLES MO
Recording Date	Aug 29, 2018
Property Address	9 ONYX CT, O FALLON, MO 63366-1813
Document Number	0000495730
Book / Page	6969 / 2049
Map Reference	MB 35 PG 189&190
Instrument Date	Aug 22, 2018
Instrument	20180829000495730
Transaction Type	Transfer
Record Updated	Oct 04, 2022
Title Company	FREEDOM TITLE

Transaction

Amount	Amount Recorded
Downpayment	Downpayment on File
Loan-to-Value (LTV)	LTV on Record
Tax	$0.00
Amount Accuracy	Full Amount from Assessment
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	9 ONYX CT, O FALLON, MO 63366-1813

Mortgage

Document Number	0000495740
Date	Aug 29, 2018
Instrument	20180829000495740

Lender

Name	PACIFIC UNION FINANCIAL LLC
Type	Lending Institution

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	361 Months
Due	Sep 01, 2048

Tax Assessment & Valuation

Source: St. Charles County records · Assessment roll updated July 1, 2025 · Last verified March 2026

Property Jurisdictions

Type	Name
State	Missouri
County	St. Charles County
Municipality	O'Fallon City
Unified School District	Fort Zumwalt R-II School District (PK - 12)

Tax Bill & Assessment History

Assessed value and assessed market value are set for property tax purposes, not market price estimates; both are a fraction of this property's market value.

Year	Tax Bill	Assessed Value	Assessed Market Value
2025	$4,350.00	$67,766 (+10.71%)	$356,665 (+10.71%) Land $66,000 Building $290,665
2023		$61,212
2022			$322,168 Land $55,000 Building $267,168

Flood & Wildfire

Source: FEMA National Flood Hazard Layer as of August 25, 2024 · 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

Wildfire

Wildfire Risk	Low lower than 98% of the US · lower than 96% of Missouri
Wildfire Likelihood	Under 0.01% annual chance
Exposure	None beyond ember reach

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

Internet Providers

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

Provider	Max Down / Up (Mbps)
Gateway Fiber Holdings Fiber	2,000 / 2,000
Spectrum Cable · Fiber in parts of the area	1,000 / 1,000
Verizon Fixed Wireless	300 / 20
T-Mobile USA Fixed Wireless	100 / 20

May also be available: Wisper ISP.

Based on FCC filings for 280 locations within half a mile of this property.

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	OFALLON PWS serves 32,515 people
Water Source	Purchased surface water from several systems
Last State Inspection	Aug 2024
Lead	2 ppb (2023–2025) action level 15 ppb

Violations Reported to EPA

Water Quality	None last 10 years
Treatment and Procedure	None last 10 years
Monitoring and Reporting	1 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.