OFF MARKET

Last listed at $397,500, closed on jan 2025

$423,729

•

1,840

sq ft

9 Keystone Ridge Ct, O Fallon, MO 63366

About this home

Nestled on approximately half an acre, this charming 5-year-old ranch home property backs to serene woods, offering privacy and tranquility. Perfectly designed with over 1800 square feet of living space on the main level, featuring 4 spacious bedrooms and 2 full bathrooms. The open floor plan ensures a seamless flow between the living, dining, and kitchen areas. The kitchen is a chef's dream with ample space, 42-inch cabinets and two pantries. The primary bedroom has a large walk-in closet, coffered ceiling and primary bathroom with a separate shower and soaking tub. Ceiling fans throughout. This inviting home boasts a walk-out lower level with a full bathroom rough-in on the unfinished lower level, providing endless opportunities for customization. An extra 220V outlet is also ready for a hot tub! Situated on a quiet court, located within the Fort Zumwalt North school district. Convenience is key with easy access to highways, shopping, restaurants, and entertainment.

Single-familyProperty Type

2019Year Built

0.48 acresLot Size

$230Est. Price/Sq.Ft.

3 garage spacesParking

Listed by Sue Peters • EXP Realty, LLC

Bought with Chad Wilson • Keller Williams Realty West

Redfin checked: a minute ago

•Source:MARIS as Distributed by MLS Grid #24062402

Redfin Estimate

$423,729

$26K over list price of $398K

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 6.9% lower than the average sale price ($455K) of 6 comparable homes.

SOLD SEP 10, 2026
$375,000
A
3 beds2.5 baths1,748 sq ft
46 Red Brook Ct, O Fallon, MO 63366
SOLD AUG 20, 2026
$400,000
B
3 beds2 baths1,740 sq ft
518 Brookside Forest Ct, O Fallon, MO 63366
SOLD AUG 21, 2026
$500,000
C
3 beds2.5 baths2,012 sq ft
345 Mystic Brook Dr, O Fallon, MO 63366
SOLD SEP 18, 2026
$440,000
D
4 beds2.5 baths2,947 sq ft
609 Sunny Pass Dr, Wentzville, MO 63385
SOLD JUL 7, 2026
$639,900
E
4 beds2.5 baths3,163 sq ft
51 Blue Brook Ct, O Fallon, MO 63366
SOLD JUL 23, 2026
$375,000
F
3 beds2 baths1,786 sq ft
248 Thorn Brook Dr, O Fallon, MO 63366

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Earn from this home

Sell

$397,322

Est. take-home

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Rent

$2,367/mo

Redfin rental estimate

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Market trends in 63366, MO

Last updated September 2026

Buyer's Market

Seller's Market

Seller's market

Sale-to-List Price

101.6%

0.2% MoM

Median sale price

$381K

$0 MoM

Avg. days on market

10d

3 days MoM

Recently sold homes

184

9 MoM

New listings for sale

$129,900
1 bed1 bath562 sq ft
304 W Pitman St, O Fallon, MO 63366
COMING SOON
$400,000
3 beds2.5 baths2,410 sq ft
1353 Apple Valley Dr, O Fallon, MO 63366
$350,000
3 beds2 baths1,800 sq ft
11 Fawn View Ln, O Fallon, MO 63366
$499,900
5 beds3.5 baths3,356 sq ft
408 Saint Gemma Dr, O Fallon, MO 63366
$234,900
3 beds1.5 baths910 sq ft
204 Allen Dr, O Fallon, MO 63366
3D WALKTHROUGH
$450,000
4 beds4 baths4,267 sq ft
1615 Wainscott Ct, O Fallon, MO 63366
$249,000
2 beds1 bath1,014 sq ft
408 Raymond Dr, O Fallon, MO 63366
3D WALKTHROUGH
$339,900
3 beds2 baths2,104 sq ft
341 Westbrook Dr, O Fallon, MO 63366
3D WALKTHROUGH
$499,000
4 beds3.5 baths3,480 sq ft
759 Obrecht Ln, O Fallon, MO 63366
$650,000
4 beds3.5 baths5,286 sq ft
3116 Brook Hollow Dr, O Fallon, MO 63366
See all

Provided by Redfin

Sale history for 9 Keystone Ridge Ct

Tax history for 9 Keystone Ridge Ct

*Taxable value of land and structures on it ("additions") is determined regularly by local assessors and does not affect market price.

Public record

Public record
Zoning
Permits

Beds

Baths

Stories

Lot width

—

Lot depth

—

Lot size

0.48 Acres

Year renovated

—

Sq. Ft.

1,699

Year built

2019

Style

Single Family Residential

County

St. Charles County

APN

2-0048-C585-00-0052.0000000

Parking Spaces

—

Basement

—

Accessible

—

HOA Dues

—

Garage

—

Features

—

Last updated by owner on Aug 7, 2026.

R-1

PUD

Single-Family Residential District

This District is composed of those areas of the City whose principal use is and ought to be low-density single-family dwellings. The regulations of this District are designed to create and preserve a predominately urban character as evidenced by lot sizes, and street and drainage requirements. In addition to the dwelling permitted in this District, certain compatible recreational and public uses are conditionally allowed and strictly regulated to ensure harmony with the principal use of this District.

Zone overlays

Planned Unit Development District

Permitted uses

Include but are not limited to:

Housing-Single unit
Communications tower
Park & open space

Jun 27, 2025 • Final

Building-residential alterations - decks / additions / solar / remodels / patio covers / plumbing / electrical / mechanical

Construct a covered deck.

Remodel

Aug 2, 2019 • Final

Building-residential new construction - single- multi-family / mobile home / modular

New construction

Permit history is from public records and may be incomplete or inaccurate. Redfin and its agents make no representations about the property condition or permit status. Buyers should independently verify all information.

Property details

Parking

Parking Information
Covered Spaces: 3
Parking Total: 9
Parking Features: Accessible Parking, Attached Garage, Garage Door Opener
Garage Spaces: 3
Carport Spaces: 0
Has Attached Garage
Has Garage

Interior

Bedroom Information
# of Bedrooms: 4
# of Bedrooms Main: 4

Bathroom Information
# of Full Baths (Total): 2
# of Main Level Bathrooms (Total): 2
# of Main and Upper Bathrooms: 2
Main Level # of Full Bathrooms: 2

Basement Information
Has Basement
Basement Features: Full, Bath/Stubbed, Sump Pump, Unfinished, Walk-Out Access

Other Rooms Information
# of Rooms: 8

Fireplace Information
Has Fireplace
# of Fireplaces: 1
Fireplace Features: Gas

Heating & Cooling
Has Heating
Heating Information: Forced Air
Cooling Information: Electric

Interior Features
Interior Features: High Ceilings, Coffered Ceiling(s), Open Floorplan, Carpets, Vaulted Ceiling, Walk-in Closet(s)
Window Features: Six Panel Door(s)
Appliances: Dishwasher, Disposal, Microwave, Gas Oven

Exterior

Building Information
Construction Materials: Brk/Stn Veneer Frnt, Vinyl Siding

Property Information
Ownership Type: Private
Property Type: Residential
Property Sub Type: Residential
Above Grade Finished Area: 1,840
Above Grade Finished Area Source: Public Records
Below Grade Finished Area Source: Other

Lot Information
Lot Features: Backs to Comm. Grnd, Backs to Trees/Woods, Cul-De-Sac, Sidewalks, Streetlights, Wooded
Lot Size Acres: 0.4848
Lot Size Dimensions: irr
Lot Size Source: County Records

Financial

Tax Information
Tax Annual Amount: $4,428
Tax Year: 2023

Utilities

Utility Information
Water Source: Public
Sewer: Lift System, Public Sewer

Location

HOA Information
Association Fee: $400
Association Fee Frequency: Annually

School Information
Elementary School: Mount Hope Elem.
Middle Or Junior High School: Ft. Zumwalt North Middle
High School: Ft. Zumwalt North High
High School District: Ft. Zumwalt R-II

Public facts

Beds: 4
Baths: 2.0
Sq. Ft.: 1,699
Stories: 1.0
Lot Size: 0.48 acres
Style: Single Family Residential
Year Built: 2019
Year Renovated: —
County: St. Charles County
APN: 2-0048-C585-00-0052.0000000

Home facts updated by county records on Aug 7, 2026

Other

Listing Date Information
Expected Active Date: Friday, November 1, 2024

Home Information
Living Area: 1840
Levels: One

Around this home

Schools

Flint Hill Elementary

Public K-5 • Assigned • 4.2mi

7/10

Ft. Zumwalt North Middle School

Public 6-8 • Assigned • 4.6mi

8/10

Ft. Zumwalt North High School

Public 9-12 • Assigned • 6.1mi

9/10

Provided by GreatSchools

Lifestyle

Provided by Walk Score and Local Logic

Climate risks

1/10 Flood Factor

Minimal risk of a flood reaching the building in the next 30 years

1/10 Fire Factor

Unlikely to be in a wildfire in next 30 years

4/10 Heat Factor

6 days above 107° expected this year, 18 days in 30 years

2/10 Wind Factor

1% chance of strong winds in next 30 years

1/10 Air Factor

0 unhealthy days expected this year, 0 days in 30 years

Provided by First Street

Historical weather

O Fallon, MO • 63366

Average low and high temperatures (°F)

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Sun exposure

In this area, properties receive around 9.7 hours in June and 4.2 hours in December, which is comparable to the U.S. average for solar exposure.

9.7 hrs

4.2 hrs

JuneDecember

Provided by Shadowmap

Estimated sale price

$403,000 – $488,000

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Home values near 9 Keystone Ridge Ct

Data from public records.

Address	Redfin Estimate
147 Keystone Ridge Drive, O Fallon, MO 4 Beds \| 2 Baths \| 1840 Sq. Ft.	$402,971
153 Keystone Ridge Drive, O Fallon, MO 4 Beds \| 2 Baths \| 1841 Sq. Ft.	$408,304

Address	Redfin Estimate
149 Keystone Ridge Drive, O Fallon, MO 3 Beds \| 2 Baths \| 1609 Sq. Ft.	$381,139
155 Keystone Ridge Drive, O Fallon, MO 3 Beds \| 2 Baths \| 1984 Sq. Ft.	$439,560

Address	Redfin Estimate
151 Keystone Ridge Drive, O Fallon, MO 4 Beds \| 2.5 Baths \| 2674 Sq. Ft.	$475,874
157 Keystone Ridge Drive, O Fallon, MO 4 Beds \| 2.5 Baths \| 2538 Sq. Ft.	$418,946

Property information provided by MARIS as Distributed by MLS Grid when last listed in 2024. This data may not match . Learn more.

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