The house was built in the 1840s by a wealthy Irish immigrant named Shegog. Faulkner bought it for $6000 in 1930. It had been empty for ten years before that and was in a dilapidated state, not to mention it had no electricity or indoor plumbing. Faulkner fixed it up, doing much of the work himself.
As you can see from this picture, it is difficult to get a good picture of the exterior when the trees that surround it are leafed out. You would get better views in the winter.
A large, neglected formal garden, laid out in the 19th century, sits on the other side of the driveway. Faulkner never bothered to revive the garden.
The guide said Faulkner "built" this room in the 1950s. It obviously wasn't added on to the house, so I assume it got re-purposed from another use. For many years after he bought the house, Faulkner had a lot of children around: two step-children, a daughter, and a niece he mostly raised after his brother died. I imagine as the Faulkners became empty-nesters they converted bedrooms to other uses.