(1) A person must perform permit demolition work in accordance with (a) a valid demolition permit issued in respect of the work; or(b) a valid building permit issued in respect of building work that includes the permit demolition work.Penalty: In the case of (a) a natural person, a fine not exceeding 100 penalty units; or(b) a body corporate, a fine not exceeding 500 penalty units.(2) Despite subsection (1) , a person may perform permit demolition work that varies from the demolition permit, or building permit, if the person is performing the work in accordance with the written approval of the relevant building surveyor that has been obtained before performing the demolition work that varies from the permit.(3) A building surveyor may only give written approval under subsection (2) if (a) the responsible person for the permit demolition work, or the owner of the premises where the work is being performed, has submitted to the building surveyor amended design documentation that accurately reflects the variation; and(b) if the variation relates to a matter specified in section 191(2) , the relevant permit authority has consented to the variation in writing; and(c) the building surveyor is satisfied that the amended design documentation complies with this Act, and certifies the documentation accordingly.