Ecology and environmental protection have been discussed more and more in the last few years. This trend was also affected by the construction and architecture department. Concepts such as green building, environmentally friendly materials, alternative energy sources and energy-efficient construction systems of buildings are depressed. All of this comes under the name "Green Buildings". Wood-based construction and material solutions are a response to these trends. Investors and users are gradually starting to think more environmentally friendly and therefore many times also make decisions for wood-based constructions. There are several systems that fall into the category of so-called crushed buildings. The aim of this work is to provide a look at the "greener" options offered in the construction industry with an emphasis on their energy and thermal characteristics. The subject of the research was selected structural parts of timber-based buildings applied to model constructions by means of which selected thermal-technical characteristics were evaluated. This work points out the differences between the compared design variants of wooden buildings in terms of their ability to effectively save energy sources for heating inserted during the operation of wood-based buildings.