Is it legal to make a sun room on the balcony of the attic? What approval procedures are needed? How to deal with it?

It is illegal to use attic balcony as a sun room. If it is built, it must be approved by the department. It is illegal to build a sun room on the terrace without approval. Jianyang Light Room needs to go through a series of examination and approval procedures with the competent department of city planning administration. If it has not been handled, you can communicate with the law enforcement department and go through the formalities in time.