NewsMontana and Regional News


For sale: majestic 350-acre island in Flathead Lake

Cromwell Island
Posted at 5:26 PM, Jul 14, 2022

DAYTON - Off of US Highway 93 near Dayton along the western side of Flathead Lake sits Cromwell Island. With 350 acres and nearly three miles of shoreline, Cromwell Island offers all-encompassing views of Wild Horse Island and the Mission Mountains.

The entire island is currently on the market for a cool asking price of $72 million.

“This is definitely the largest island west of the Mississippi River on freshwater, owned by a single party,” said Bill McDavid, Hall & Hall Director and Real Estate Partner.

A quick boat ride from the shores of Flathead Lake near Dayton takes you to Cromwell Island.

“I mean there’s plenty of places to land in a helicopter, you can land in a seaplane, boat works just fine,” said McDavid.

Once on the island, a 45,000-square-foot villa greets you with majestic views overlooking Flathead Lake.

Cromwell Island

“I mean you can’t be on Flathead Lake and not see this structure, it’s got such magnitude," added McDavid.

McDavid said current owners of the island started building the main villa back in the 1990’s, influenced by 16th century French Architecture.

“The magnitude of the structure is reminiscent of Versailles,” added McDavid.

Beautiful on the outside, the villa remains unfinished on the inside, as the current owners re-purposed their focus on other projects across the country.

“It’s not built out right now, so a new owner could really create whatever floor plan they want with certain limitations, but it’s an open canvass in that respect,” said McDavid

McDavid envisions the property remaining as a private residence or being re-purposed into a luxury development. “I could easily see that happening.”

Cromwell Island map

A finished guest villa just a short distance away from the main villa can be used full time while construction is underway.

“Whatever somebody intends to do with this structure or build elsewhere on the island, they could live there, have a place to sleep that’s comfortable while they do that,” said McDavid.

Listed at $72 million, McDavid said it’s hard to put a price on Cromwell Island.

“How do you price something like that, how do you price something like this? I mean you can’t go compare apples to apples with these things, the market is what the market is,” said McDavid.

Additional information about the property can be found online.


Drone video from Bill McDavid:

Cromwell Island: Drone Video