Glenfeshie Bothy was carefully upgraded and extended to include an access stair to the attic space, increasing its capacity for the walkers who use it. The roof was replaced, fully insulated, and lined internally with Douglas fir boards. A new stone extension was constructed using traditional techniques to accommodate the internal access stair, which was also crafted from Douglas fir. This extension provides additional storage space for the bothy.

The two ground-floor rooms received new flooring throughout and had new stoves installed following the rebuilding of the chimney. New doors and windows were fitted throughout the building. The toilet facilities were fully modernised and expanded to provide two toilets instead of one.