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4030 Key Harbour Drive

Lake St Louis, MO 63367

Coming Soon

$999,000

  • 4 beds
  • 4 baths
  • 3,731 sq ft
Contact
Narrative Real Estate314-480-5353jess@jessicaberchtold.com

About this home

Your next chapter…a lot more lifestyle!

Just steps from the lake and conveniently situated off Lake Saint Louis Boulevard, 4030 Key Harbour Drive is a destination unto itself. Thoughtfully curated interiors and inviting entertaining spaces flow into an extraordinary outdoor oasis through a four-season room, private terraces, and covered and open-air patios.
The home’s vintage of 1996 has been beautifully modernized with refined finishes and exceptional amenities. Twelve-foot ceilings and expansive gathering spaces lend scale to the main level and high design throughout offers sophisticated entertaining. A chef’s kitchen appointed with Wolf and Sub-Zero appliances, a striking stone hearth fireplace, a light-filled four-season room and a dedicated office enrich everyday living. The primary suite offers a private terrace, custom walk-in closet and a spa-inspired bath with heated floors, dual vanities, and a wet room featuring a steam shower and jetted tub.

The lower level extends the home’s hospitality with an open family room, dining area and kitchen. Three additional bedrooms, two bathrooms and access to private patios offer flexibility for guests or multigenerational living.
Beyond the French doors, meandering stone paths unfold into a remarkable landscape designed for recreation and repose. A resort-style pool framed by dramatic boulders and cascading waterfalls anchors the setting, complemented by a sport court, firepit lounge and a lovely garden walk. A three-car smart garage, circular drive and motor court complete the property. If having it all is what you want, look no further!

Showings begin Thursday, 11/5/26. Open House Sunday 11/8/26 1-3!

Property facts

Bedrooms
4
Bathrooms
4
Living area
3,731 sq ft
Lot size
0.56 acres
Property type
Residential · Single Family Residence
Year built
1996
Subdivision
Key Harbour Estate #3
Days on market
0
Listed on
Nov 2, 2026

Listing information

Listing brokerage
Dielmann Sotheby's International Realty314-725-0009
Listing agent
Stephanie Oliver
Listing number
26065611
Status
Coming Soon

Mortgage calculator

Taxes, insurance and HOA dues

Estimated monthly payment

$5,051

Principal and interest
$5,051
Loan amount
$799,200

This is an estimate, not a loan offer. Your lender gives the actual figures.

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Information from third parties, deemed reliable but not verified. All data is obtained from various sources and may not have been verified by the broker or the MLS. 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 or agent presenting the information. The information provided is for consumers' personal, non-commercial use and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing.

MARIS data last updated at November 2, 2026 at 7:45 PM CST.