Social and Economic Costs of Spatial Chaos – Settlement of Rural Areas. Among the features of spatial structures of villages and characteristics of rural areas, which support multidirectional socio-economic development and improvement of living conditions of inhabitants and users of the countryside, the focused and compact character of the development is of particular importance. The observed lack of determination in preventing and limiting suburbanization processes, including in rural areas, directly and negatively affects both the natural environment and forms of development of these areas, causing the generation of additional economic and social costs related to the chaotic management of space. The aim of the article is to estimate the degree of concentration of buildings in various types of communes in Poland and to determine the spatial distribution of this phenomenon to be able to estimate the size of chaos costs on a global basis and determine its level in the comparative system of municipalities.