Shelter Island

Flathead Lake, MT, United States
USD $44,500,000
1 - 20 of 31
For Sale
5 Beds
8 Baths
24000 sqft
Built 2011


This majestic mountain aerie, Shelter Island Estate, sits atop a solid granite foundation on 24-acre Shelter Island, rising from Montana’s Flathead Lake; one of the top 3 cleanest lakes in the world. This rare offering, currently the largest private home in Montana, features over 32,000 square feet of structures and commands 7,000 feet of prime lakeside frontage, extremely unique for private ownership. Being situated next to Glacier National Park is one more facet in this incredible jewel of a property.

The 5 bedroom/8 bath Main House is over 24,000 square feet with 10,000 square feet of heated porticos and outdoor entertaining space that surrounds the residence and allows indoor/outdoor living and entertaining on the largest scale.

The Great Room features 45-foot ceilings with a 2nd story gallery that encircles the room. A gleaming, copper Conservatory is the perfect place to watch Montana wild life unfold before your eyes, in all seasons. It captures year-round natural light and illuminates the space between the grand hall and the mahogany-lined Office. Additional compliments of the Office include another limestone fireplace and 4 inch thick doors that open onto the main portico. The Master Bedroom Suite is the centerpiece of the main floor with wrap around porticos and porches, a domed ceiling with delicate umber, coved lighting. The mahogany closet, with refrigerator, leads to the expansive Master Bathroom with black and white Carrara marble. Additional 4 bedrooms feature the same quality and craftsmanship as used throughout the estate.

The Main House also features a Wine Cellar, an Indoor Shooting Range, and Gym with lake views and large shower and steam bath (one of 4). The ground floor also has a heated Boat Stall served by a dedicated rail system to access your boating craft with the greatest of ease.

The Dining Room, Kitchen, and Breakfast Room boast the same architectural details and fine finishes found throughout the home, along with gorgeous views of the lake and vistas beyond. Two pantries, glass door refrigerator/freezers, several under counter cooling boxes, trash compactors, food warming drawers, multiple dishwashers and stainless steel gas stoves are just a portion of the amenities ready to assist the finest gourmet chef and staff.

A commercial grade elevator to all three stories serves the house.

The 2 bedroom 4 bath guest/boat house is of the same quality and materials as the entire estate. Its 5,289 square feet on three stories represents a smaller compliment to the main residence. Two granite fireplaces, and a steam room are additional amenities.

A 1,200 foot Utility Building, contains a 100 kW diesel generator and electrical panels. The 1,800 square foot Workshop is styled in the same manner and detail as the main house.

Buildings included in the development total over 44,000 square feet. The two parcels on shore are nearly 8 acres, total. Shelter Island consists currently of three structures, with the ability to build three more compounds.



Cathedral Ceiling, Elevator, Exercise Room, Fitness Room, Jogging/Biking Path, Lake Privileges, Large Kitchen Island, Library, Sunroom, Walk-In Closets.


Fixtures, Kitchen Island, Oven, Range/Oven.

Interior Features

Abundant Closet(s), Cathedral/Vaulted/Tray Ceiling, Crown Molding, Decorative Molding, Elevator, Fitness, High Ceilings, Kitchen Island, Stereo System.


Atrium, Exercise Room, Formal Dining Room, Guest House Separate, Guest Room, Inside Laundry, Laundry Room, Library, Living Room, Office, Utility Room, Wine Cellar.

Exterior Features

Barn/Stable, Deck, Exterior Lighting, Open Porch(es), Outbuilding(s), Storage Shed, Terrace.


Lake View, Mountain View, Open View, Panoramic, Scenic View, Trees, View, Water View, Wooded.


Fly Fishing, Island, Lake, New Construction, Private Islands, Water View, Waterfront, Yacht.

Additional Resources



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