 The Building Certifier interacts with all professionals & often the Senior trade contractors engaged within the building & inspects the works as they proceed, during mandatory inspection phases of footings, slab, frame, fire separation & final, to ensure compliance with the approved plans, the NCC & relevant Australian Standards.Building Surveyors or Building Certifiers are licensed by the state they practice in & have 3 different levels.Building Surveyors were first conceived after the Great Fire of London in 1666 in the UK, where their primary focus is the safe construction & use of the building concerning the life-health & safety of the occupants.