Called the Tractor Shed, the house was built for for an artist who grew up in a farmhouse, with a "love of open landscape and barn-like spaces but also a fascination for cosy, hidden-away rooms," said the studio.
HeathWalker made use of its precast concrete frame and agricultural proportions.
Rather than being hidden in the walls and ceilings, the precast concrete supports of the former shed burst through into the interiors, contrasting the new finishes.
Polished concrete floors have been added downstairs, and solid oak boards used on the upper level.
"A restrained palette of materials is left as natural as possible," said the studio.
The simple structure has been subdivided into two floors of both single and double-height rooms, with large living and kitchen spaces below and bedrooms above .
"The dramatic scale of the barn is fully revealed in the main studio and open-plan kitchen," said the studio.
"The lowered ceiling height in the adjoining dining area is intimate yet expansive, opening onto the garden and landscape beyond."
The home's entrance sits tucked on its western elevation, replacing what would have been large barn doors on the shed's gable ends.
Instead of doors, large windows now to look out across the countryside.
Onside, a small hall connects a library, double-height living room, dining room and double-height kitchen, illuminated by windows on each gable end as well as skylights.
At first-floor level, bedrooms take advantage of the sloping roof to create bright, open spaces, with areas for storage and a dressing room tucked into the eaves.
Wood burning stoves heat both a snug at ground floor level and a bedroom above, and a heat recovery system helps to naturally ventilate the spaces of the home.
HeathWalker was founded by Jane Heath and Jeremy Walker.
Many neglected rural structures find a new lease of life as houses.