Example: Extension of windows and doors, addition of a floor, extend the building behind, i.e. add bedrooms, creation of a new staircase, compliance of a dwelling in the basement, creation of an open space , removal of load-bearing walls, etc.
Example: before the space had a use of offices is you want to transform them into a restaurant or something else.
Certificate of location or cadastral plan (This document is very important for understanding and for the preliminary study of the file (the feasibility of the project). A photo taken by your phone of the last page of the document (the layout plan of the building) is sufficient for this request.