This is an interesting vernacular form, akin to the saltbox, but on a much smaller scale.
Update: As of 2018, I can’t locate this house. I believe it may have finally been torn down.
Abandoned House, Arlington
Vanishing Georgia: Photographs by Brian Brown
Since 2008. A visual survey of Georgia's historic architecture and culture. 8,000 locations. 27,000 images.
Vanishing Georgia: Photographs by Brian Brown 
I believe this was my grandmothers house
What was her name? I’ll add it to the photograph.