The study analyzed the thermal performance of enclosing structures made of: polystyrene concrete, heat block, arbolite blocks, foam concrete and aerated concrete. The calculation of heat losses was carried out using finite element methods, in the software package “Elcut”. The results of the study showed that the enclosing structure in the form of a wall consisting of aerated concrete blocks will be most effective in terms of heat conservation. In order to identify the most affordable and economical material for the construction of a house with an estimated area of 100 m2, an enlarged calculation was carried out, including determining the cost of building material necessary for the construction of an enclosing structure. According to the calculation results, the most expensive technologies turned out to be construction options from aerated concrete blocks and a heat block. The house made of wood-mineral composites (arbolite) turned out to be the most inexpensive. The materials of the work can be used by developers in the selection and justification of materials for wall structures of low-rise construction.