The condition of the technical infrastructure study was prepared as part of the work on the Study of the conditions and directions of spatial development of Siedlce and covers the entire area of the city. It concerns the functioning technical infrastructure and the actions necessary to supplement or replace it. The aim of the study was, among others, to identify the areas designated for the limitation and elimination of low emission sources through the expansion of the heating and gas networks, purification of rainwater and identification of areas chosen for the construction of new transmission facilities for electricity supply.