The establishment of the fence generally does not need approval, as long as it does not affect the legitimate rights of the neighborhood. When citizens exercise their own legal rights, they shall not harm the legal rights of others. If it causes obstruction or loss to the neighboring party, it shall stop the infringement, remove the obstruction and compensate for the loss. Therefore, the establishment of the fence does not require planning approval, which belongs to the normal exercise of citizens' rights, as long as they do not infringe on the interests of others. The Constitution stipulates that citizens shall not infringe upon the lawful rights of others while exercising their own lawful rights.
 Your houses belong to the "neighborhood right relationship". You need to act in accordance with the law to maintain a harmonious neighborhood relationship. Pay special attention to lighting, eaves dripping, roads, etc.
 Legal basis
 Article 68 of the Urban and Rural Planning Law of the People's Republic of China, after the competent department of urban and rural planning has made a decision to order the suspension of construction or demolition within a time limit, if the party concerned does not stop construction or demolish within the time limit, the local people's government at or above the county level in the place where the construction project is located may instruct the relevant departments to take measures such as sealing up the construction site, compulsory demolition, etc.