The project focuses on the reconstruction of two adjacent panel houses in Tábor, Havanská Street. The buildings have 33 flats on 9 floors and show considerable energy intensity. The age of the houses is due to construction in 1980, i.e. 36 years. The object of the reconstruction is to insulate the perimeter casing of buildings, insulation of the roof structure, replacement of window fillings and entrance doors to the buildings.The aim of activities is to reduce the energy performance of the building thanks to the new insulation system.