In Shanghai, what should the owners do if they change the nature or use of the property without authorization?

1. The owner or user "shall use the property according to the purpose approved by the planning administrative department or specified in the property right certificate, and shall not change the nature of the use of the property without authorization" 2. If the owner or user violates the Regulations of Shanghai Municipality on the Administration of Residential Property or the temporary owners' convention or the owners' convention, and changes the nature of the use of the property without authorization, which damages the legitimate rights and interests of other owners and users, the relevant owners and users may bring a civil lawsuit to the court according to law. 3, the property company found that the owner or user has ultra vires behavior, should be discouraged and stopped; Discourage and stop ineffective, it shall report to the owners' committee and relevant administrative departments within twenty-four hours. If the property company fails to dissuade, stop or report in time, the district (county) real estate management department may impose a fine of more than 1000 yuan 1 10,000 yuan. In other words, the property company will have to supervise the housing reform. The property should be responsible for its inaction. 4. If the owner changes his residence without authorization, the district (county) real estate management department shall order him to make corrections within a time limit and restore to the original state, and may impose a fine of 1 10,000 yuan but not more than 50,000 yuan. The landlord should bear the responsibility, and the tenant should also bear the responsibility. The property management company is responsible for inaction. You can sue either party, or you can take three people as co-defendants.