Lacking a history of this structure, I’m going to guess that it was a grocery or general store. The recessed entrance is a common characteristic of buildings of this era and use.
Historic Storefront, Circa 1910, Godfrey
Vanishing Georgia: Photographs by Brian Brown
Since 2008. A visual survey of Georgia's historic architecture and culture. 9,000 locations. 30,000 images.
The little road alongside the store to the right really lends this composition an even more poignant appeal to the olden days and being way out in the country. Well done, Brian!