Nowadays the need of energy efficiency and sustainable solutions in the industry is more prominent than ever. People are in a constant search of new ways to switch from fossil fuels to other sources of energy which are more reliable and have a smaller ecological impact. Taking into consideration that buildings and, especially, houses in the modern world are everywhere around us, the following idea was developed. In this work, we will discuss what is a passive house building, how it appeared and what problems it solves. We will also analyze the basic principles and things which are taken into consideration when constructing such a building.