vPPR created a sensitive extension on the site of an existing metal barn that re-used the existing foundations and parts of the steel column structures to form a new bedroom and bathroom block.  This freed up the existing barn building so that the beautiful space of the interior could be retained.  A mezzanine library is inserted at the east entrance, below which is entrance hall and cloakroom. The kitchen is located in a redundant store room to the north of the stone barn, with its own service entrance.  A new bat loft was installed in the pitched roof above the bedrooms to compensate for roosting areas that may have been lost in the conversion of the barn.

The building responds to two courtyards: a new planted courtyard to the south, around which the building makes an L-shape, and a hard courtyard at the north between the barn building and the main house.  A large timber door to the north facade can be rolled back to engage the barn with the main house or closed off when it is rented out for privacy to both houses.

The new extension blends into the assembly of agricultural buildings by using a black timber panel system and black slate roof, echoing the black metal barn that previously existed on the site.  Large windows frame important views across the fields from the primary living rooms and the master bedroom.

The building is highly sustainable, with well-insulated walls, sustainably sourced materials, heated from via a biomass boiler located on the estate and with energy is powered by a large photovoltaic array in an adjacent field.