55 - 57 Chiltern Street London W1U 6ND
Demolition of existing mansard roof (Address: Flat 9, at 59 Chiltern Street (5th Floor) and Flat 7, 63 Chiltern Street (5th Floor) located above 55-65 Chiltern Street. W1U 6NF) and erection of an additional sheer storey to main facade together with a new mansard roof to create 6 self-contained flats (Class C3). (Increase of 4 flats) with new terraces/balconies.