Single Family for Sale: 3 Rainier Court, O'Fallon, MO 63366

5 beds
4 full baths
2,965 sqft
$849,900
$849,900
3 Rainier Court, O'Fallon, MO 63366
5 beds
4 full baths
2,965 sqft
$849,900
Remove from
Favorites
Add to
Favorites
Add to
Trip Map
Hide Share or
Email
Price:
$849,900
$25,000 - 07/01/2026

Type Single Family
Style 1 Story
Beds 5
Baths 4 full baths
Total Living Area 4,983 sqft
Square Footage 2,965 sqft
Garage Spaces 4
Lot Size 3.00 acres
Year Built 1999
Assoc Fee $750
Assoc Fee Paid Annually
Taxes Paid $8,813

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

MLS 26035863
Status Active
DOM 40 days
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!

Room Features

Basement Description Sleeping Area, Concrete, Bathroom, Walk-Out Access, Partially Finished, Full

Lot & Building Features

Appliances Wine Refrigerator, Water Softener, Double Oven, Electric Cooktop, Washer, Dryer, Disposal, Refrigerator, Microwave, Dishwasher
Architecture Ranch
Assoc Fee $750
Assoc Fee Paid Annually
Construction Brick, Vinyl Siding
Cooling Dual, Attic Fan, Ceiling Fan(s), Central Air
Heating Natural Gas, Forced Air
Sewer Septic Tank
Tax Year 2025
Taxes Paid $8,813
Water Well
Fireplaces 2

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 3 Rainier Court, O'Fallon, MO

Date Name Price Difference
07/01/2026 Price Adjustment $849,900 2.86%
06/07/2026 Listing Price $874,900 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
$635,000
$215 / sqft
Average
$768,625
$265 / sqft
High
$1,000,000
$319 / sqft

Address City Zip Beds Baths Price Sq. Ft. $/SQFT Sold Date
This Listing O'Fallon 63366 5 4.0 $849,900 2,965 $287 N/A
11 Lakeside Circle Lake St Louis 63367 4 3.0 $739,000 2,866 $258 07/25/2025
11 Stone Falcon Court Lake St Louis 63367 4 4.0 $975,000 2,803 $348 07/16/2025
6 Matterhorn Court St Paul 63366 6 4.0 $1,000,000 3,131 $319 08/15/2025
1930 Meadow Farm Lane O'Fallon 63366 4 3.0 $725,000 2,805 $258 10/03/2025
617 Lakeview Road Lake St Louis 63367 5 5.0 $635,000 2,960 $215 06/09/2026
540 Deer Brook Drive O'Fallon 63366 5 4.0 $700,000 2,953 $237 04/09/2026
58 Blue Brook Court O'Fallon 63366 5 4.0 $675,000 2,796 $241 06/17/2026
118 Kersting Farms Drive O'Fallon 63366 4 4.0 $700,000 2,858 $245 06/25/2026

Map of 3 Rainier Court, O'Fallon, MO

Location Map Street View
Photo of Jaden Burden
Direct: 417-437-9925
Office
5285 Hwy N, Ste 104
St. Charles, MO 63304
636-400-7653
Listed by Fox & Riley Real Estate, Heather Mohr
$
20%
1.0369455230027%
6.75%
$
$
$
Monthly Payment
Principal & Interest
Monthly Taxes
Monthly HOA
Monthly Home Ins.
Monthly PMI

3 Rainier Court (MLS #26035863) is a 1 story single family home located in O'Fallon, MO. This single family home is 2,965 sqft and on a lot of 130,680 sqft (or 3.00 acres) with 5 bedrooms and 4 baths. This property was listed on 06/07/2026 and has been priced for sale at $849,900.

The 6 bedroom single family home at 6 Matterhorn Court in St Paul is nearby and sold for $1,000,000 on 08/15/2025. Another nearby 5 bedroom single family home, 540 Deer Brook Drive in O'Fallon sold for $700,000 on 04/09/2026.

Nearby zip codes are 63367, 63368 and 63385. This property neighbors other cities such as Boshertown, Dardenne Prairie, Lake St Louis, 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: Fox & Riley Real Estate

Listings displaying the MARIS logo are courtesy of the participants of Mid America Regional Information Systems Internet Data Exchange

Maris

Listing data and photos provided MARIS and distributed by MLS GRID. Member Participants (and their affiliated licensees, if applicable) shall indicate on their websites that IDX information is provided exclusively for consumers’ personal non-commercial use, that it may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing, that the data is deemed reliable but is not guaranteed by MLS GRID, and that the use of the MLS GRID Data may be subject to an end user license agreement prescribed by the Member Participant’s applicable MLS if any and as amended from time to time. MLS GRID may, at its discretion, require use of other disclaimers as necessary to protect Member Participant, and/or their MLS from liability. Based on information submitted to the MLS GRID. All data is obtained from various sources and may not have been verified by broker or MLS GRID. Supplied Open House Information is subject to change without notice. All information should be independently reviewed and verified for accuracy. Properties may or may not be listed by the office/agent presenting the information.