Structure of the Act Part 3 – Other Provisions Supplementary Section 291 - Powers to extend Chapter
821.This section allows the appropriate national authority to extend the provisions of the Chapter to:
	non-residential buildings;
	newly converted buildings, both residential and non-residential; or
	prescribed descriptions of properties within any of these categories (subsections (1), (2) and (5)).
822.A property is newly converted for the purposes of the Chapter if it has been converted but not yet used for its intended purpose, is being converted, or its conversion is being designed (subsection (3)), and regulations may provide for the circumstances in which a building is to be treated as converted (subsection (4)).
823.The section further allows for the appropriate national authority to broaden by regulations the definition of a purchaser in section 292(1) so as to include descriptions of persons who are taking steps with a view to deciding whether to purchase residential properties (subsections (6) and (7)).