550 Topaz Dr, O Fallon, MO 63366 Property Records

St. Charles County property record for 550 Topaz Dr, O Fallon, MO 63366

Property Summary

Property Type	Single Family Home
Details	3 bd · 2.5 ba · 1,752 sqft · built 2001
Lot Size	0.22 acres (9,583 sqft)
Owner	Individual Name on File
Last Sale	$150,620 (Mar 2002)
Tax Bill	$3,798 (2025)
Deeds & Mortgages	Sep 2021 Transfer Sep 2021 Sale
Flood Zone	Zone X (minimal risk)
APN	`T990300279`

Property Details

APN / Parcel Number

Primary APN	`T990300279`
Alternative APN	`2-0051-8062-00-0086.0000000`

Interior

Bedrooms	3 Beds
Full Baths	2.5 Baths
Half Baths	1 Half Bath
Total Rooms	7 Rooms
Stories	2 Stories
Building Area	1,752 sqft Living Area
Gross Area	3,108 sqft
1st Floor Area	946 sqft
Basement Area	916 sqft
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 2001
Effective Year Built	Effective 2001
Architectural Style	Bi-Level
Exterior Material	Aluminum/Vinyl
Lot Area	9,583 sqft (0.22 acres)
Garage Type	Attached
Garage Area	440 sqft
Parking Spaces	2 Parking Spaces

Exterior Amenities

Porch	Open Porch
Porch Area	124 sqft
Deck Area	Deck Area
Patio Area	192 sqft

Utilities, Heating & Cooling

Heating Fuel	Gas
Sewer	Connected

Location & Zoning

Account Number	T990300279
Street Address	550 TOPAZ DR
City	O FALLON
State	MO
Zip	63366-7902
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Description	DIAMOND POINTE #3 LOT 86
Legal Subdivision	DIAMOND PT #3
Legal Lot Number	86
Jurisdiction	ST CHARLES MO
Township / Civil Division	O'FALLON
Census Block Group	4
Census Block	4003
Census Tract	311602

Owner

550 Topaz Dr is owned and occupied by an individual who acquired it in September 2021.

Source: St. Charles County records, as of August 7, 2026

Owner of Record	Individual Name on File
Mailing Address	550 TOPAZ DR, O FALLON, MO 63366-7902
Occupancy	Owner Occupied
Owner Type	Individual

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

Date	Document
Sep 14, 2021	Affidavit of Death of Joint Tenant, Transfer
Sep 14, 2021	Beneficiary Deed, Transfer

Assessor's Deed Record

Deed Names	Name on Deed
Last Sale	Mar 13, 2002 · Amount on File
Deed Sale	Mar 13, 2002 · Amount on File
Prior Sale	Mar 13, 2002 · Amount on File
Deed Document Number	200222992
Deed Book / Page	2833 / 1331
Last Transfer Date	Sep 13, 2021
Transfer Doc	0000076633
Record Updated	Sep 20, 2026

September 2021: Affidavit of Death of Joint Tenant, Transfer

Document Type	Affidavit of Death of Joint Tenant
Jurisdiction	ST CHARLES MO
Recording Date	Sep 14, 2021
Property Address	550 TOPAZ DR, O FALLON, MO 63366-7902
Document Number	0000076633
Map Reference	MB 35 PG 189
Instrument Date	Sep 7, 2021
Instrument	2021R-076633
Transaction Type	Transfer
Record Updated	Oct 4, 2022

Transaction

Tax	$0.00
Additional	Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	550 TOPAZ DR, O FALLON, MO 63366-7902

September 2021: Beneficiary Deed, Transfer

Document Type	Beneficiary Deed
Jurisdiction	ST CHARLES MO
Recording Date	Sep 14, 2021
Property Address	550 TOPAZ DR, O FALLON, MO 63366-7902
Document Number	0000076634
Map Reference	MB 35 PG 189
Instrument Date	Sep 7, 2021
Instrument	2021R-076634
Transaction Type	Transfer
Record Updated	Aug 16, 2023

Transaction

Tax	$0.00
Amount Accuracy	No Consideration Stated
Additional	Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name
Address	550 TOPAZ DR, O FALLON, MO 63366-7902

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Tenants in Common
Address	2300 E MAGMA RD UNIT 155, 155, SAN TAN VALLEY, AZ 85143-4955

Tax Assessment & Valuation

The 2025 property tax bill for 550 Topaz Dr was $3,798, up 7.7% from the year before.

Source: St. Charles County assessment roll, as of August 7, 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

Year	Tax Bill	Assessed Value	Assessed Market Value
2026		$59,091 (-)	$311,007 (-) Land $60,000 Building $251,007
2025	$3,798.00 (+7.71%)	$59,091	$311,007 Land $60,000 Building $251,007
2024	$3,526.00
2023		$53,238 (+31%)
2022	$2,899.00	$40,639	$280,201 (+31%) Land $50,000 Building $230,201
2021			$213,888 Land $40,000 Building $173,888

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.

Flood

FEMA maps place 550 Topaz Dr in Zone X, an area of minimal flood risk.

Source: FEMA National Flood Hazard Layer, effective August 25, 2024

FEMA Flood Zone	Zone X minimal risk
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 550 Topaz Dr is low, with less than 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 99.1% of the US · lower than 98.2% of Missouri
Wildfire Likelihood	Under 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	OFALLON PWS serves 32,515 people · EPA ID MO6010588
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, 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 280 locations within half a mile, as of December 31, 2025

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

May also be available: Wisper ISP.

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