This thesis presents the spatial planning acts of the Municipalities of Ribnica and Ig in different periods. The spatial planning acts PS SDPO Ribnica, 2003 (Ordinance amending the spatial components of the long-term plan of the Municipality of Ribnica for the period between 1986 and 2000 and medium-term plan of the Municipality of Ribnica for the period between 1986 and 1990) and OPN Ribnica, 2012 (Municipal spatial plan) were discussed for the Municipality of Ribnica and spatial planning acts DPO Ig, 1998 (Ordinance amending the long-term plan of the municipalities and the City of Ljubljana for the period between 1986 and 2000 and social plan of the Municipality of
Ljubljana Vič-Rudnik for the period between 1986 and 1990 for the area of the Municipality of Ig) and PRO Ig, 2012 (Spatial order) for the Municipality of Ig. The basic land use for the entire area of both municipalities and the detailed land use for the selected settlements in both municipalities, which had an urban plan, were discussed in regard to above mentioned spatial planning acts. We came
across and analysed changes of some categories of basic and detailed land use among the discussed spatial planning acts of each municipality. The thesis shows the proportion of surfaces of individual categories of building land per capita in selected settlements. The research revealed that in both municipalities the area of building land is considerately increasing whereas the area of agricultural
land is decreasing with regard to basic and detailed land use. The proportion of areas of building per capita also increased in both municipalities.