Legal basis: According to Article 6 of the Administrative Measures for Interior Decoration of Residential Buildings, without approval, decorators engaged in interior decoration of residential buildings may not carry out the following acts: (1) erection of buildings and structures; (two) to change the facade of the house and open the doors and windows on the non-load-bearing external wall; (3) Dismantling heating pipelines and facilities; (four) the demolition of gas pipelines and facilities. The acts listed in items (1) and (2) of this article shall be approved by the competent department of city planning administration; The third behavior shall be approved by the heating management unit; Article 4 The act shall be approved by the gas business unit.