Graithwaite Estate is a place of state significance and is included in the NSW State Heritage Register. Built in 1833, the building has been fully restored from a derelict state for the use of Sydney Church of England Grammar School – Shore. 
With tight programming and a fixed end date, works were delivered with intricate and detailed specialist works to a very high standard of finish. Works included demolition of non-historic building elements, sample processes for specialised products (tiles, wrought iron, fittings, slate and door and window furniture).
Structural modifications provided floor strengthening and a new lift.
Drainage for the site and buildings, road works, fencing and landscaping were also included such as a formal historic garden. This imposing building has been restored to an exceptional standard.