Not all investment property tax depreciation schedules are built the same. They should be but the reality is, like many things in the property world, all is not as it seems. The devil is in the details - and the details are everywhere. But relax, at Washington Brown we take care of every last one. Establised in 1978, Washington Brown is one of Australia's oldest and most respected quantity surveying organisations. Each year, we prepare more than 13,500 reports, delivering $1.5 billion in depreciation savings.