3 Rainier Court O’Fallon MO 63366 MLS #MIS26035863

3 Rainier Court
O’Fallon, MO, 63366
$874,900
5 Beds
4 Baths
4,983 SqFt
3 Acres
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$874,900
3 Rainier Court
O’Fallon, MO, 63366
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Welcome to your DREAM HOME, where country living meets convenience, just minutes from town. This spectacular custom-built, mostly brick ranch sits on a 3-acre lot in highly sought-after St Paul. It is nestled on a quiet cul-de-sac in the prestigious Summit Estates Subdivision. Boasting nearly 5,000 finished square feet, a 4-car oversized garage and an open floor plan, this home offers luxury, serenity, and ample space for both entertaining and daily living. —–

Step inside to discover soaring 11-foot ceilings and beautiful hardwood floors throughout much of the main level. The expansive great room, featuring a gas fireplace, opens to a massive 56’ x 14’ deck that overlooks the private backyard. Adjacent to the great room is a formal living room and dining room, ideal for hosting guests. The gourmet kitchen impresses with rich hickory cabinets, granite countertops, a double oven, pantry, stainless steel appliances, and a spacious bay-window breakfast area. (Dishwasher & Refrigerator are 1 yr old). —–

The luxurious primary suite provides a true retreat experience, complete with a gas fireplace, private sitting area, two walk-in closets, and a BRAND-NEW SPA LIKE BATHROOM featuring dual vanities, quartz counters, a soaking tub, and an oversized walk-in shower. Private deck access from the primary suite leads directly to the relaxing two-year-old hot tub or a place to sit & enjoy the birdsong & your morning coffee. A thoughtful split-bedroom design offers two additional generously sized main-level bedrooms each with their own full baths, and a bright office / den with a bay window and peaceful wooded view. —–

Downstairs, the walk-out lower level is designed for entertaining, offering a spacious family room, billiards and game area, impressive wet bar, two additional large bedrooms—including one wired for a media or theater room—another full bath, and abundant storage. Stepping out from this level, you’ll find a sprawling patio that seamlessly transitions to a fully fenced backyard, bordered by tranquil woods for unparalleled privacy. The expansive outdoor space is perfect for hosting memorable family barbecues, providing ample room for gatherings both large and small. Children and dogs alike will enjoy the freedom to play and explore. —–

Additional features include an oversized four-car side-entry garage with new doors and a second staircase to the lower level, a circle driveway with ample parking & aggregate trim, a porte-cochere covered drive through with newer stamped patio at the front entry to keep you protected from the elements, a front yard in-ground sprinkler system, newer retaining wall, attic fan, water softener, dual HVAC systems and water heaters, and a main-floor laundry room with laundry sink & additional hookups on the lower level. Included with the home are the two-year-old hot tub, one-year-old stainless-steel refrigerator, one-year-old washer and dryer, and a lower-level wine cooler. This exceptional property is truly a must-see, set up your tour today!

Property Details

Price:
$874,900
MLS #:
MIS26035863
Status:
Active
Beds:
5
Baths:
4
Type:
Single Family
Subtype:
Single Family Residence
Subdivision:
Summit Estates
Neighborhood:
408fortzumwaltnorth
Listed Date:
Jun 7, 2026
Finished Sq Ft:
4,983
Lot Size:
130,680 sqft / 3.00 acres (approx)
Year Built:
1999
RanchWooded408 – Fort Zumwalt North408fortzumwaltnorthSummit EstatesFt. Zumwalt R-iiMount Hope Elem.Ft. Zumwalt North MiddleFt. Zumwalt North High

Schools

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

Interior

Above Grade Finished Area
2965
Appliances
Electric Cooktop, Dishwasher, Disposal, Dryer, Microwave, Double Oven, Refrigerator, Washer, Water Softener, Wine Refrigerator
Bathrooms
4 Full Bathrooms
Below Grade Finished Area
2018
Cooling
Attic Fan, Ceiling Fan(s), Central Air, Dual
Fireplaces Total
2
Flooring
Ceramic Tile, Hardwood
Heating
Forced Air, Natural Gas
Laundry Features
Main Level, Sink
Levels
One
Main Level Bedrooms
3

Exterior

Architectural Style
Ranch
Association Amenities
Other
Attached Garage YN
1
Construction Materials
Brick, Vinyl Siding
Exterior Features
Private Yard
Fencing
Back Yard, Privacy
Garage Spaces
4
Lot Features
Cul-De-Sac, Wooded
Parking Spots
6
Parking Total
6
Patio And Porch Features
Covered, Deck, Patio
Roof
Architectural Shingle

Financial

HOA Fee
$750
HOA Fee Frequency
Annually
HOA Includes
Snow Removal
HOA Name
Summit Estate
Tax Year
2025
Taxes
$8,813
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Current real estate data for Single Family in O’Fallon as of Jun 12, 2026
627
Single Family Listed
137
Avg DOM
186
Avg $ / SqFt
$479,719
Avg List Price

Community

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Property Summary

    Located in the Summit Estates subdivision, 3 Rainier Court O’Fallon MO is a Single Family for sale in O’Fallon, MO, 63366. It is listed for $874,900 and features 5 beds, 4 baths, and has approximately 4,983 square feet of living space, and was originally constructed in 1999. The current price per square foot is $176. The average price per square foot for Single Family listings in O’Fallon is $186. The average listing price for Single Family in O’Fallon is $479,719.
3 Rainier Court
O’Fallon, MO