—(1) Where the plans of any building works or proposed building works have been approved by the Commissioner of Building Control under section 5(3)(a) and the developer of the building works intends to depart or deviate from the plans approved, the developer shall apply to the Commissioner of Building Control for his approval of the amended plans showing the proposed departure or deviation.
(2) An application under subsection (1) shall be accompanied by —
the amended plans of the building works prepared in accordance with the building regulations by the appropriate qualified person referred to in section 5(2)(b)(i) or (ii) or both, as the case may be;
in the case of major building works, a certificate from the following accredited checkers:
a certificate by an accredited checker stating that he has checked the amended plans relating to those building works and that, to the best of his knowledge and belief, the amended plans so checked do not show any inadequacy in the key structural elements of the building to be erected or affected by those building works; and
where the building works comprise wholly or partly of any geotechnical building works, a certificate by a specialist accredited checker (who may or may not be the same accredited checker referred to in sub-paragraph (i)) stating that the specialist accredited checker has checked the amended geotechnical aspects of the geotechnical building works and that, to the best of his knowledge and belief, there is no inadequacy in the geotechnical aspects relating to those geotechnical building works; and
the certificate (in the form prescribed) signed by the qualified person appointed to prepare the amended plans of those building works, certifying that he prepared those amended plans.
(3) The first approval granted under section 5 of any plans of building works shall end and be superseded to the extent that the amended plans relating to those same building works are approved under this section (whether or not the approval also relates to other building works).