This 3-bedroom 1970‘s terraced house was fully refurbished and extended in order to accommodate the needs of a family with three children. The client asked for a minimal contemporary design with strong emphasis on natural materials and ecological awareness. The existing house has a simplistic exterior, boasting a split-level section and an open plan layout. Aiming to emphasise these features, we replaced the stairs and added new openings between semi-levels. The new stairs were mirrored and re-designed to increase transparency. Zoning was improved by relocating the Kitchen/Breakfast area up a half level to the south side of the building. From that space, the light penetrates into the living room through a huge fish tank. The master bedroom receives its share of direct sunlight through a new window facing the roof terrace and the master bathroom obtains a view towards the roof terrace via a decorative window to the staircase. The latter was filled with light through the glazed doors of the terrace and a new window at the roof level. The façade of the entrance area has become another focal point - research was undertaken to maintain harmony with the original architecture of the building. The integral garage was converted into a study and is also usable as a guest bedroom. Garage doors were replaced with a rendered wall and a window of the same width as the windows. The architectural treatment was designed to support the modernist language of the building, reinstating and emphasizing its key features - the continuous black trimming and the white cornice underneath the line of the first floor. The extension appears to be more like a garden pavilion rather than an indoor space. The retracted windows on the external walls can open fully and the North-West corner of the roof is raised to maximize penetration of the low-angle evening sunlight. The green sedum roof enhances the concept by blending into the garden.