During the visual inspection, the inspector sent by the building inspection company will note if there is visible damage to the exterior and interior walls of the property and will make a general assessment of the overall condition of the dwelling. Water damage, visible mould or plumbing and electrical issues will all be discovered by the inspector during this stage. Later, if suspected, the inspector will do various tests, such as reading Radon or CO2 levels in the air and detecting moisture content, which could indicate a termite infestation.