This semi-detached property, originally built in 1904, falls within the Grove Lane Local Area of Special Character in The Royal Borough of Kingston upon Thames. The property is typical to the area which consists mainly of detached and semi-detached 20th century houses. The property has a large garden which benefits from the evening sunlight. Prior to our appointment as the architects for this project, the property had already been extended; to the rear there was a dated and poorly insulated conservatory and the roof space had already been converted with a dormer to the rear. Our client appointed us to design a replacement for their disused conservatory. Because of the property’s classification as a local Heritage Asset, our design approach had to be carefully considered. The proposal is a sensitive and well detailed response to the character of the area as well as providing our client with much needed usable living space. The new pitched roof form with face brick walls and metal glazing frames is a more sensitive response to the character of the original property. The new extension is directly connected to the existing living room, giving direct aspect to the garden beyond; something which was lacking previously. The new space is not only functional, but architecturally exciting; as you arrive to the rear of the plan, the space dramatically opens upwards into the new vaulted ceiling with 2 new sky lights giving a sense of grandeur to the dining room as well as drawing natural light deep into the centre of the ground floor plan. Externally, the threshold between the brick walls and the tiles of the roof was carefully detailed so that a fascia board did not have to be used. The solution was to create a hidden gutter detail which the contractor executed beautifully, and the result is a crisp elevation with minimal lines which keeps the focus on the heritage asset.