The actress and her husband Ryan Reynolds have splashed out on a modest two-storey property, which comes with spacious grounds and a number of outbuildings.
The couple are said to be working on the colonial-style property at the moment, adding eco-friendly touches such as solar heating to the building and repairing damage including a rusty barn roof.
Other famous faces who own property in Louisiana include Brad Pitt and Angelina Jolie and Sandra Bullock.
Scarlett and Ryan – who married in 2008 – recently put their four-bedroom Spanish style Los Angeles property up for sale for $4.5 million.
The house – which the 'Iron Man 2' star paid $7 million for in 2007 - was built in 1931 and has been restored to its old style, as well as updated with eco-conscious upgrades such as solar electric.
The home boasts five bathrooms, a pool and spa, chef's kitchen with retro decor, a media room and gym room.
This is not the first time Scarlett has faced a loss when selling a property.
In April 2008, the 'Lost In Translation' actress sold her Manhattan loft apartment for $1.9 million - $52,000 less than she bought it for two years earlier.