This grand mansion building on London’s Chelsea embankment which overlooks the Thames, Battersea Peace Pagoda and The Chelsea Physic Garden is referred to by Samuel Pepys. When the current owner purchased and moved into the property 40 years ago, it had already been divided into flats from a single dwelling. LPA identified a unique opportunity to refurbish a historic building, it was cleared of alteration exposing the original fabric throughout, the roof removed and a clever and sympathetic additional floor inserted within a new roof structure. A duplex apartment across a new basement and ground, laterally across the first and second floor and a duplex penthouse at third and roof level. Restoration is evident throughout the building and an injection of colour and detail provides each apartment with a modern twist. A new lift was inserted to provide level access to each apartment, duplex apartments are readied for additional internal lifts and a dumb waiter was installed in the penthouse to bring heavy items from floor to floor. The preservation and modernisation of a once run-down and under-used building now responds to its environment and its users and provides a recognisable reason for its status as a locally listed building.