"This juxtaposition of forms and the cross-over of materials between the upper and lower levels was a way to reduce the scale of this elevation. At the same time, using similar materials gives an older feel to the new part of the house," he says.
Inside, the transition from the old house to the modern wing is enhanced by a gradual lightening of the colour palette. Dark aubergine walls in the study at the east end of the original house gradually give way to dark neutrals in the former living room and light tones in the new wing.
Rose says creating family living areas that had a better quality of light was a priority. As a result, the new wing incorporates lantern skylights and vaulted ceilings with a curved shape.
"These ceilings add a subtlety to the spaces. They reflect and soften the light, giving it a different quality to the original house, with its pressed metal and timber ceilings. To create a more contemporary look to the extension, we also introduced more light with a glazed roof to the terrace on the north side of the kitchen."
As the house is in a cooler part of the country, the south-facing walls are solid, with less glazing.
One of the most dramatic features incorporated into the new wing is the double-height bay window in the living room, which is positioned at the end of the east-west axis through the house.
"This large picture window in front of the stairwell draws you in as you walk through the house," says Rose. "From a distance, the focus is on the distant view of hills and valleys, but once you are close and looking down, the window frames the view of a very large oak tree."