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Active180 days on market

$1,750,000

115 Cobblestone Hills Road, O'Fallon, IL 62269

Cobblestone Hills

6

Bedrooms

8

Bathrooms

8,418

Square Feet

1990

Year Built

Single Family

Type

3-car garage Private pool Waterfront 12.15 acres

About This Property

Nestled on over 12 private acres of rolling hills and lush greenery, this sprawling country estate offers the perfect blend of luxury, comfort, and tranquility. At its heart stands a majestic traditional full-brick home, with stately architecture that effortlessly combines classic charm and modern elegance. The expansive residence features multiple levels, including six bedrooms, two of which are primary suites, a gourmet kitchen, gorgeous family spaces, an indoor pool, a theatre room, and a walk-out lower level that opens to the beautifully landscaped grounds and a hot tub. The large windows allow for sweeping views of the property, flooding the interior with natural light. Outside, the estate is a true oasis. A sparkling in-ground pool, surrounded by stone patios and manicured gardens, provides a peaceful retreat. Just beyond the pool, a charming pool house offers a cozy space for relaxation or entertaining, with ample room for guests to enjoy the serene surroundings. A picturesque pond adds a touch of whimsy to the landscape, reflecting the beauty of the surrounding trees and rolling fields. The gentle sounds of nature provide a soothing atmosphere, perfect for moments of quiet reflection. An additional outbuilding, versatile in use, offers ample storage or space for hobbies, a workshop, or a potential studio. The entire property is enveloped in privacy, offering a peaceful escape from the hustle and bustle of everyday life, all within minutes of downtown O'Fallon. With its expansive grounds, luxurious amenities, and unparalleled serenity, this estate is a rare gem that promises an extraordinary lifestyle in a breathtaking natural setting. Preapproval required for showings.

Property Features

Beamed Ceilings
Bidet
Bookcases
Built-in Features
Center Hall Floorplan
Crown Molding
Custom Cabinetry
Double Vanity
Eat-in Kitchen
Granite Counters
High Speed Internet
In-Law Floorplan
Kitchen Island
Open Floorplan
Pantry
Master Downstairs
Separate Shower
Soaking Tub
Storage
Two Story Entrance Foyer
Walk-In Closet(s)
Whirlpool
Workshop/Hobby Area
Balcony
Garden
Lighting
Misting System
Private Entrance
Private Yard
Storage
Carbon Monoxide Detector(s)
Security Gate
Security System
Smoke Detector(s)

Appliances & Systems

Heating

  • Forced Air
  • Geothermal
  • Heat Pump

Cooling

  • Ceiling Fan(s)
  • Central Air

Schools

Elementary

OFALLON DIST 90

Middle School

OFALLON DIST 90

High School

OFallon

Property Details

List Price

$1,750,000

Price/sqft

$208

HOA

None

Annual Taxes

$21,426

MLS Number

25073602

County

St. Clair

Lot Size

12.15 acres

Parking

Construction

Brick

Roof

Architectural Shingle

Sewer

Septic Tank

Listing Terms

Cash, Conventional, FHA, VA Loan

Mortgage Calculator

Estimate only. Contact a lender for exact figures.

Est. Monthly Payment

$9,314

Principal & interest only

20% ($350,000)
3%50%
7.0%
3%12%
Loan Amount$1,400,000
Total Interest$1,953,040
Total Cost$3,353,040

Get pre-approved → contact us at (314) 757-1522

Schedule a Showing

Whittier Realty Group · (314) 757-1522

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Request Information

Whittier Realty Group · (314) 757-1522

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Listed By

Margaret Riley

Nester Realty

(618) 236-0400

Interested in touring? Contact your agent:

Whittier Realty (314) 757-1522

Listing courtesy of Nester Realty. All information deemed reliable but not guaranteed. MLS# 25073602. © 2026 Whittier Realty Group LLC. Equal Housing Opportunity.