The article deals with administrative and legal issues connected with building lawlessness in protected areas. It presents some elements of a conflict between public and private interests. There have been presented both aims and forms of nature protecting. Introduction of such forms expresses public interest on the one hand, and on the other hand it causes additional restrictions connected with using properties which belong to the main powers of each owner. In this way the article is related to the issues dealing with restrictions in property. Such restrictions constitute important legal problems that mean interference in owner´s freedom to take decisions, which to a certain extent constrains their behaviour. This article presents only a part of such issues and deals with protected areas and building works in them. Special attention is also devoted to consequences of conducting building works without building licence or notification of building works in protected areas. This presentation is based on an analysis of source texts, mostly – building law act and nature protecting act. There have also been used other materials connected with administrative law, the natural sciences and administrative jurisdiction statements