Purpose. Given densification of buildings and changes in the urban planning environment, the need arises for more balanced regulation of issues related to the regulation of the impact of mode-forming objects on the surrounding natural environment. In order to comprehensively take into account the spatial component of the localization of pollution sources and the objects that surround them, it is important to conduct modeling and systematization of possible options for the spatial placement of sanitary protection zones around mode-forming objects. This will make it possible to provide well-founded planning decisions and legal support for establishing their boundaries in the area and further legalization. Methodology. Using the method of system analysis, there was established existence of two fundamentally different groups of planning models of sanitary and protective zones with and without an overlap. The most frequent cases of localization of sanitary and protective zones in both groups were simulated by the modeling method, based on the nature of the model itself. The use of these methods in general made it possible to classify planning models of sanitary protection zones with further substantiation of their features. Findings. The obtained results provide a basis for specialists in urban planning, land management and geodesy to use a comprehensive approach in determining the size and configuration of sanitary protection zones around mode-forming objects. It is important that the results can also be used by environmental experts when justifying the sizes of sanitary protection zones. Originality. For the first time, for sanitary protection zones, grouped planning models have been grouped on which the size and configuration of sanitary protection zones depend that will be established in the area. The models, obtained as a result of the research, were tested for the establishment of sanitary protection zones around the enterprise in Dnipro. Practical value. The systematized planning models can be used to accurately determine the size of the aggregated sanitary protection zone and its configuration to further establish its boundaries on the ground.

Peculiarities of the state registration of sanitary protection zones in the state land cadastre were studied. There are three types of state registration of sanitary protection zones in the state land cadastre. The first case: simultaneous state registration of the land parcel on which the regime-forming object is located and the sanitary protection zone around it. For this case, three features are systematized: if the right to a land parcel is issued for the first time and the sanitary protection zone has not yet been established around it; if there is a state act on the right of ownership or use of a land parcel, and the information about it is not registered in the state land cadastre; if, for certain reasons, division or unification of previously formed land parcels is carried out without changing their purpose.  The second case: state registration is diluted in time. For this case, two types of specific features are systematized: the land management documentation for the land parcel with the regime-forming object located on it was developed and passed state registration and the data was entered into the automated system of the state land cadastre, while the data on the sanitary protection zone was not updated; data on the land parecel have already been entered in the state land cadastre, but the regime-forming object is not yet available. The third case: the need to update the data on the sanitary protection zone, while the data on the land parcel remain unchanged. The corresponding case should be the most common, taking into account the modern development of technologies and constant changes in the standards of environmental norms. Its relevance is determined by trends regarding the possibility of changes in the direction of the targeted use of the land plot and rapid adaptation of the company's profile to rapid changes in market conditions.