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$999,000 Pending

4030 Key Harbour Drive, Lake St Louis, MO, 63367

4 bd | 4 ba | 3,731 sq ft | Traditional
Subdivision: Key Harbour Estate #3
SUNDAY OPEN HOUSE CANCELED! 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!

Status: Pending · MLS# 26065611 · Listing Courtesy of Dielmann Sotheby's International Realty, [email protected]

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Facts and features

List Price

$ 999,000

Status

Pending

Days on market

0

MLS#

26065611

Bedrooms

4

Full baths

4

Sq. Ft. Above

3,731

Sq. Ft. Below

1,513

Subdivision

Key Harbour Estate #3

Municipality

Lake St Louis

School District

Wentzville R-IV

County

St Charles

Property Type

Residential

Style

Traditional

Type

Residential

Additional Information

Property Tax (2025)

$8,396

Room Dimensions

Main level
Living Room
0X0 Level i
Gas fireplace
Sitting Room
0X0 Level i
Dining Room
0X0 Level i
Kitchen
0X0 Level i
Sunroom
0X0 Level i
Windowed all-seasons room
Office
0X0 Level i
Side entry access
Primary Bedroom
0X0 Level i
Private terrace
Primary Bathroom
0X0 Level i
Steam shower, jetted tub, double vanities, custom closet
Lower level
Family Room
0X0 Level w
Gas fireplace, beverage cooler, built-in shelving
Dining Room
0X0 Level w
Open dining with built-in cabinetry and wine refrigeration
Kitchen
0X0 Level w
Open plan with KitchenAide appliances
Bedroom 2
0X0 Level w
Ensuite bedroom with built-in desk/dresser and walk-in closet
Bedroom 3
0X0 Level w
Built-in shelving and walk-in closet
Bathroom 4
0X0 Level w
Current use is a gym with 2 closets

Recent Nearby Sales in 63367

Last 6 closed homes in this zip.

Address Bd/Ba SqFt List Sold Closed
709 Huntwood Terrace, Lake St Louis, MO 63367 3/3 1,876 $459,500 $450,000
97.9% of ask
Nov 10, 2026
60 Country Field Court, O'Fallon, MO 63367 3/3 1,740 $284,900 $296,500
104.1% of ask
Nov 9, 2026
708 Brook Manor Court, Unincorporated, MO 63367 4/4 2,874 $500,000 $510,000
102% of ask
Nov 6, 2026
5 Wyndemere Court, Lake St Louis, MO 63367 4/4 3,567 $699,900 $675,000
96.4% of ask
Nov 6, 2026
603 Prairiegate Court, O'Fallon, MO 63367 4/3 1,536 $425,000 $415,000
97.6% of ask
Nov 6, 2026
15 Country Trail Court, O'Fallon, MO 63367 4/3 1,550 $2,900 $2,900
100% of ask
Nov 6, 2026

Price & Listing History

Listed for sale at $999,000
Nov 5, 2026
Current status: Pending
As of Nov 7, 2026 · $999,000

Every time this home was on the market

Prior listings, expired and canceled listings, days on market, price changes and sold prices from MARIS MLS records.

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Top agents near this home

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