Is it legal for the industry committee and the owner's representative to decide the establishment of the industry committee, the change of the property and the increase of the cost?

This is illegal, and the same decision requires the owners of the community to vote.

Can property fees go up? As a charge, the property fee can certainly rise and fall flexibly, but the increase is determined by the owner. In real life, many residential properties directly post the notice of how much property fees have increased since a certain month. Most owners simply don't know why they have gone up, but they have already notified them. This is a means for property rights units to forcibly raise prices.

The increase of property service fees shall be approved by the owners whose exclusive parts account for more than half of the total construction area and more than half of the total number of people. According to Article 76 of the Property Law, the following matters shall be decided by the owners: (1) Formulating and amending the rules of procedure of the owners' congress. (two) to formulate and modify the management regulations of buildings and their ancillary facilities. (three) to elect the owners' committee or replace the members of the owners' committee.