8. A person who intends to carry out any works, or to make a material change of use as regards a building to which this Part applies, shall give, to the building control authority in whose functional area the works or building are, is or will be situated, notice in writing of such intention (in these Regulations referred to as a “commencement notice”) not less than fourteen days and not more than twenty-eight days before the commencement of the works or the making of the material change of use.