A massive 45,000-square-foot estate on its own private island in Montana is now the most expensive home for sale in the state, listed at $72 million. But the project was never finished — and hasn’t moved in more than two years.
Quick Snapshot
- Price: $72,000,000
- Location: Cromwell Island, Flathead Lake (Dayton, MT)
- Beds/Baths: Unfinished
- Square Footage: 45,000 sq. ft. (mid-construction)
- Lot Size: 348 acres (entire private island)
- Standout Feature: Largest privately owned freshwater island west of the Mississippi
First Impression
This isn’t just remote — it’s completely cut off. Cromwell Island rises out of Flathead Lake with nearly three miles of shoreline and nothing but open wilderness in every direction. Across the water sits Wild Horse Island, a place tied to Native history where horses were once swum across the lake for protection.
And perched above it all is something that looks more like a European palace than a Montana home.
Inside The Home
The mansion — known as “The Villa” — was designed to be enormous. Inside, you’re greeted by raw scale: towering ceilings, unfinished stonework, and a cavernous entry hall where a sweeping curved staircase was clearly meant to anchor the space. Right now, it’s just a skeletal frame — a vision paused.
Rooms stretch across thousands of square feet, with spaces intended for grand entertaining, luxury living, and panoramic views of the lake. But instead of finishes, there’s exposed structure and silence.
The Story Behind It
The property was owned by Robert M. Lee, a Long Island-born entrepreneur, explorer, and conservationist who purchased Cromwell Island in the late 1980s.
Lee wasn’t your typical buyer. He founded Hunting World, a luxury outfitting brand that grew out of his experience leading safaris across Africa, and he built a reputation as a collector, writer, and outdoorsman. He led expeditions in dozens of countries and even helped push early conservation protections for endangered species overseas.
Before his death in 2016 at age 88, Lee and his wife had begun building what was intended to be an extraordinary estate on the island — a villa-scale residence with roughly 45,000 square feet of living space.
But construction was never completed. Nearly a decade later, the structure still stands unfinished, frozen in time.
Over-The-Top Features
- Entire 348-acre private island
- Nearly 3 miles of shoreline on Flathead Lake
- Multiple private docks
- Four-story stone villa with European-inspired design
- Massive terraces overlooking lake and mountains
- Total seclusion — no immediate neighbors
- Views of Wild Horse Island and surrounding wilderness
- One of the largest privately owned freshwater islands in the U.S.
The Big Picture
For context, Montana’s median home price is around $500,000. This property is asking more than 140 times that — and still requires a buyer willing to take on an unfinished mega-project in a remote location.
It’s also been on the market for over 700 days, suggesting that even ultra-high-end buyers are hesitant.
Final Take
It’s not just a luxury home — it’s an unfinished vision from a larger-than-life owner. And now, it’s waiting for someone bold enough to finish what he started.
Click here to view the complete listing on Zillow.
