The alterations and additions to the Mosman House were substantial. The original dwelling was effectively one storey with a lower ground floor area dedicated to a single garage with an open deck above. The front Post War façade as well as the front and rear sections of the house were demolished and a majority of the ground floor level reconfigured. The Lower Ground Floor involved excavation to extend the space into a double Garage. And a new first floor was added to accommodate the Master Bedroom, Study and Ensuite with strict height restrictions due to sharing of views with neighbours.

In addition to the main building works much of the original architectural elements were refurbished such as the stone fireplaces and the timber detailing. New elements such as the custom built Kitchen, first floor timber lined ceilings and the timber work to the front facade assist in preserving and reinstating some of the architectural integrity of the original house. The exterior timber work is executed with clean lines and finesse. The result is a seamless and sensitive renovation