19 South Street London W1K 2XB
Partial demolition to rear wing and roof; excavation of a new basement storey and extension at rear second floor level with erection of a new single story roof extension for a third floor with terrace to the rear; installation of plant with screening on the second-floor terrace; installation of sedum roof at main roof level; and associated works all in association with the continued use as a single-family dwelling.