I agree with the upstairs. First, the damage of load-bearing walls has an impact on the safety and life of buildings. It is illegal to dismantle it without authorization. If you sue him, you are sure to win the case. Second, the original building used to be a residence, but now it is a restaurant. The nature of use has changed, and the pure house has become a commercial and residential building. Dining rooms are extremely harmful to the environmental protection and fire prevention of houses, and the current code has corresponding requirements. It is also illegal without the approval of the corresponding department. I don't know which department is in charge. It may be the planning bureau or the urban construction department; Personally, I don't think the competent department will agree to this illegal act. At most, some corrupt elements acquiesce in this phenomenon. If you are serious, they won't risk their jobs. It would be better if the media were involved.

I wish you get rid of your troubles as soon as possible.