- Overview
- Description
- Property Details
- Location
- HOA Management
- Facts & Features
- Getting Around
- Nearby Homes
$999,000
Monthly Est:$4,972
4 Beds
4 Baths3 full baths + 1 half bath
3,731sqft
4030 Key Harbour Dr, Lake Saint Louis, MO 63367
$999,000
$4,972/moEst:
Get Pre-Approved
Single Family Residence
Built in 1996
$75/mo HOA
24,393.6 sqft lot
$268/sq.ft
Description
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!
- Houzeo last checked: 1 minute ago
- Listing updated: November 5, 2026 at 7:32 am
- Listing Provided by: Stephanie Oliver (314) 322-6992 , Alicen Holloway | Dielmann Sotheby's International Realty (314) 725-0009
- Source: MARIS MLS-MO as distributed by MLS GRID | MLS#: MIS26065611
Property Details
Status
Active
Type
Single Family Residence
No. of Stories
-
County
City
Neighborhood
--
Year Built
1996
HOA Fees
$75/mo
Finished Area
3,731 sqft
Lot Size
24,393.6 sqft lot
Basement Area
- sqft
MLS Name
MARIS MLS
MLS Number
MIS26065611
MLS Status
Active
Days on Market
23
Continue Your Journey in App
Find your dream home, receive real-time updates, and many more!
Continue Your Journey in App
Find your dream home, receive real-time updates, and many more!
Location
HOA Management
Key Harbour
HOA Fees
$900/ Annually
Amenities
Amenities and services may be covered by one or multiple associations and service providers.
Club House
Maintenance
Tennis
Pool
Park Playground
Common Area
Beach
Lake
Recreational Facilities
Common Area Maintenance
Disclaimer: Amenities are based on third-party information and may vary; buyers must independently verify all amenities, as information is deemed reliable but not guaranteed.
Facts & Features
Rooms
Bedrooms & bathrooms
Bedrooms: 4
Bathrooms: 4
Living Room
Level: Main
Sitting Room
Level: Main
Dining Room
Level: Main
Kitchen
Level: Main
Sunroom
Level: Main
Office
Level: Main
Primary Bedroom
Level: Main
Primary Bathroom
Level: Main
Family Room
Level: Lower
Dining Room
Level: Lower
Kitchen
Level: Lower
Bedroom 2
Level: Lower
Bedroom 3
Level: Lower
Bathroom 4
Level: Lower
Interior
Interior Features
Bar, Beamed Ceilings, Bookcases, Breakfast Bar, Breakfast Room, Built In Features, Butler Pantry, Ceiling Fan(s), Chandelier, Coffered Ceiling(s), Custom Cabinetry, Double Vanity, Eat In Kitchen, Entrance Foyer, High Ceilings, High Speed Internet, Kitchen Island, Open Floorplan, Pantry, Recessed Lighting, Soaking Tub, Solid Surface Countertop(s), Sound System, Walk In Closet(s), Wet Bar, Workshop/hobby Area
Sewer
Public Sewer
Flooring
Carpet, Hardwood
Heating
Forced Air, Gas
Cooling
Ceiling Fan(s), Central Air, Electric
Window Features
Energy Star Qualified Windows, Insulated Windows, Plantation Shutters, Window Treatments
Appliances
Stainless Steel Appliance(s), Gas Cooktop, Energy Star Qualified Dishwasher, Disposal, Ice Maker, Microwave, Built In Electric Oven, Double Oven, Range Hood, Built In Refrigerator, Wine Cooler, Wine Refrigerator, Bar Fridge
Construction
Year Built
Year Built: 1996
Home type
Single Family Residence
Foundation Details
Concrete Perimeter
Property Condition
Updated/remodeled
Roof
Architectural Shingle
Construction Materials
Cement Siding
Architectural Style
Traditional
Utilities & Energy
Basement
9 Ft + Pour, Bathroom, Concrete, Daylight, Egress Window, Partially Finished, French Drain, Walk Out Access
Laundry Features
Laundry Room, Lower Level, Main Level, Multiple Locations, Washer Hookup
Fireplace Features
Gas, Gas Log
Security Features
Closed Circuit Camera(s), Fire Alarm, Smoke Detector(s)
Association Amenities
Beach Access, Clubhouse, Common Ground, Lake, Park, Playground, Pool, Tennis Court(s)
Water Source
Public
Electric
220 Volts
Utilities
Cable Connected, Electricity Connected, Natural Gas Connected, Sewer Connected, Underground Utilities, Water Connected
Parking Features
Additional Parking, Attached, Circular Driveway, Concrete, Garage, Garage Door Opener, Garage Faces Side, Kitchen Level, Storage
Other Features
Disclosures
See Seller's Disclosure
Lot Features
Back Yard, Garden, Landscaped, Near Golf Course, Private, Scattered Woods, Secluded, Some Trees, Terraced
Subdivision Name
Key Harbour Estate #3
Price History
| Date | Event | Price |
|---|---|---|
11/05/2026 Source: | Listed for Sale | $999,000 $268/sqft |
10/12/2026 Source: | Coming Soon | $999,000 $268/sqft |
Nearby Homes
Find Homes by Property Features in Lake Saint Louis, MO
Nearby New Homes For Sale
Based on information from Mid America Regional Information Systems, Inc. through Nov 05, 2026, 09:31AM as submitted to and distributed by 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. Some IDX listings have been excluded from this website.
Properties displayed may be listed or sold by various participants in the MLS. Property data presented reflect information otherwise available from public records. The REALTOR® providing this information may not have represented the buyer or seller
in some or all of the transactions.
IDX information is provided exclusively for consumers’ personal noncommercial 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. © 2026 Mid America Regional Information Systems, Inc. All Rights Reserved.
Advertising Broker: Nicholas Huscroft | Chosen Realty
