Any fencing requires a building permit. From the point of view of Romanian legislation, the type of materials used does not matter. Similarly, the fact that your fence has or does not have a foundation does not matter. The only exceptions allowed by law are natural fences or those made of mobile panels. The application file for the permit will include the following documents: a certificate of urbanism, all up-to-date permits specified in the certificate of urbanism, property documents of the land and buildings, a fence project executed by an architect, and proof that legal taxes have been paid. Depending on the regulations specific to your area, a different set of documentation or procedures might be needed.