Single Family for Sale: 155 Keystone Ridge Drive, O'Fallon, MO 63366

3 beds
2 full baths
1,984 sqft
$435,000
$435,000
155 Keystone Ridge Drive, O'Fallon, MO 63366
3 beds
2 full baths
1,984 sqft
$435,000
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Floor Plans
Price:
$435,000
$4,900 - 12/10/2025

Type Single Family
Style 1 Story
Beds 3
Baths 2 full baths
Total Living Area 1,984 sqft
Square Footage 1,984 sqft
Garage Spaces 3
Lot Size 0.21 acres
Year Built 2019
Assoc Fee $400
Assoc Fee Paid Annually
Taxes Paid $4,678

City O'Fallon
County St. Charles
School District Ft. Zumwalt R-II
Subdivision Keystone Ridge

MLS 25076846
Status Pending
DOM 27 days
Don’t miss your chance to own this charming home in a highly desirable O’Fallon neighborhood! This gorgeous 3-bedroom, 2-bath home with a 3-car garage offers nearly 2,000 sq. ft. of main-floor living—plenty of room for everything and everyone! You’ll love the beautiful hardwood floors, vaulted ceilings, tons of natural light, spacious Great Room feels warm and inviting. The primary suite is a true standout with its large walk-in closet and a bright master bath featuring a separate tub and shower, plus convenient his-and-hers vanities. Two additional generously sized bedrooms and a roomy hall bath complete the main level, along with a super convenient main-floor laundry. Step outside to the deck and patio—perfect for entertaining, grilling, or simply enjoying a peaceful morning cup of coffee. This home also features a whole-house water purification system, adding an extra touch of comfort and quality. The lower level features an egress window and a rough-in for a future bathroom, giving you the opportunity to expand and make the space your own. All of this in a prime location near parks, shopping, restaurants, and major highways. Great house, great location, great opportunity!

Room Features

Basement Description 9 ft + Pour, Roughed-In Bath, Egress Window, Unfinished, Concrete

Virtual Tours for 155 Keystone Ridge Drive O'Fallon, MO

Lot & Building Features

Architecture Ranch
Assoc Fee $400
Assoc Fee Paid Annually
Construction Brick, Vinyl Siding
Cooling Central Air
Heating Natural Gas, Forced Air
Parking Description Off Street, Garage Door Opener, Garage
Sewer Public Sewer
Tax Year 2024
Taxes Paid $4,678
Water Public

Community and Schools

Elementary School Mount Hope Elem.
Junior High School Ft. Zumwalt North Middle
Senior High School Ft. Zumwalt North High

Price History of 155 Keystone Ridge Drive, O'Fallon, MO

Date Name Price Difference
12/10/2025 Price Adjustment $435,000 1.11%
11/20/2025 Listing Price $439,900 N/A
*Information provided by REWS for your reference only. The accuracy of this information cannot be verified and is not guaranteed.

Comparable Properties Sold Near By

Low
$318,000
$177 / sqft
Average
$399,807
$204 / sqft
High
$537,000
$264 / sqft

Address City Zip Beds Baths Price Sq. Ft. $/SQFT Sold Date
This Listing O'Fallon 63366 3 2.0 $435,000 1,984 $219 N/A
12 Marquette Drive Lake St Louis 63367 3 3.0 $343,000 1,908 $180 12/20/2024
9 Keystone Ridge Court O'Fallon 63366 4 2.0 $386,500 1,840 $210 01/21/2025
117 Rue Grand Drive Lake St Louis 63367 4 2.0 $365,000 2,120 $172 01/02/2025
606 Turning Leaf Court Wentzville 63385 3 3.0 $350,000 1,824 $192 01/23/2025
459 Pleasant Breeze Drive Wentzville 63385 3 2.0 $420,000 2,092 $201 04/10/2025
41 Dauphine Drive Lake St Louis 63367 3 3.0 $537,000 2,037 $264 07/31/2025
1 Picardy Drive Lake St Louis 63367 3 3.0 $375,000 2,108 $178 08/28/2025
182 Fox Creek Drive Wentzville 63385 4 3.0 $400,000 2,068 $193 08/06/2025
904 Hunter Lane Lake St Louis 63367 4 3.0 $410,000 1,922 $213 07/14/2025
227 Barrington Ridge Lane Wentzville 63385 4 3.0 $475,000 2,022 $235 07/24/2025
65 Rue Grand Drive Lake St Louis 63367 3 2.0 $440,500 1,876 $235 06/27/2025
220 Preserve Park Place Wentzville 63385 3 3.0 $318,000 1,800 $177 07/18/2025
10 Tallyho Trail Wentzville 63366 3 2.0 $340,000 1,796 $189 07/24/2025
23 Savoy Drive Lake St Louis 63367 4 3.0 $452,110 1,861 $243 12/16/2025
31 Bedford Way Wentzville 63385 3 3.0 $385,000 2,160 $178 12/05/2025

Map of 155 Keystone Ridge Drive, O'Fallon, MO

Location Map Street View
Photo of David Voges
Direct: 314-962-1100
Office
107 W Lockwood Ave
Webster Groves, MO 63119
314-962-1100
Listed by Coldwell Banker Realty - Gundaker, Jody Tiberghien
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Browse By Area

155 Keystone Ridge Drive (MLS #25076846) is a 1 story single family home located in O'Fallon, MO. This single family home is 1,984 sqft and on a lot of 8,999 sqft (or 0.21 acres) with 3 bedrooms and 2 baths. This property was listed on 11/18/2025 and has been priced for sale at $435,000.

The 4 bedroom single family home at 9 Keystone Ridge Court in O'Fallon is nearby and sold for $386,500 on 01/21/2025. Another nearby 3 bedroom single family home, 459 Pleasant Breeze Drive in Wentzville sold for $420,000 on 04/10/2025.

Nearby zip codes are 63367, 63368, 63376, 63385 and 63386. This property neighbors other cities such as Dardenne Prairie, Lake St Louis, St Charles, St Paul and Wentzville.

Maris

Listing Last updated . Some properties which appear for sale on this web site may subsequently have sold or may no longer be available. Walk Score map and data provided by Walk Score. Google map provided by Google. Bing map provided by Microsoft Corporation.

All information provided is deemed reliable but is not guaranteed and should be independently verified.

Listing information courtesy of: Coldwell Banker Realty - Gundaker

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