Guide: What apartment owners are allowed to do - and what they are not allowed todo. Munich - Remodeling, expanding, renovating: Anyone who wants to implement such a project in or on their single-family home usually only has to ask the building authority for permission.

In a homeowners' association (WEG), structural changes are much more difficult to implement. After all, the co-owners also want to have a say if one of the owners wants to redesign something - even if it's just visually.