Sustainability has for many years been about energy efficiency, but in the early 2000s a desire was triggered in the construction and real estate industry to focus more on people and the environment. This partly comes from the knowledge that we spend 90% of our time indoors, which means that we are exposed daily to the quality of the indoor air and the potential pollutants that our built-in goods and surface layers give rise to. Out of that desire, the Building Product Assessment was born.