IBLA almost doubled the space inside this typical London townhouse with the addition of a pair of ‘secret' new floors at the top and bottom of the house. The clients, a pair of doctors, wanted to significantly increase the amount of floor-space in their house, whilst maintaining the existing character and external massing of the original house, and keeping their garden. Their brief included two new bedrooms and a play space for their children in the loft, a new kitchen, a completely re-worked 1st floor with new bathrooms and storage, and an extension in the basement for exercising, playing the drums and watching TV.