“material alteration” means an alteration (other than a repair or renewal), where the work, or any part of the work, carried out by itself would be subject to a requirement of Part A or B of the Second Schedule to the Building Regulations.

Material Change of Use Section 3(3) of the Ac( a ) a building, being a building which was not originally constructed for occupation as a dwelling, or which, though so constructed, has been appropriated to other purposes, becomes used as a dwelling,

“minor works” means works consisting of the installation, alteration or removal of a fixture or fitting, or works of a decorative nature.