For the purposes of this Chapter the sustainability of a residential property relates to the extent to which—
the materials used in the property,
other aspects of the design and construction of the property, and
any services, fittings and equipment provided in, or in connection with, the property,
meet any sustainability standards.
Sustainability standards are standards prescribed by the appropriate national authority for any of the following purposes—
ensuring the health, safety, welfare and convenience of persons in or about the property and of others who may be affected by the property or matters connected with it,
furthering the efficient management of the property and of its construction,
furthering energy efficiency,
furthering the efficient use of water and minimising flood risk,
furthering efficient waste management,
furthering the protection or enhancement of the environment, and
furthering the prevention or detection of crime.
The appropriate national authority may by regulations amend subsection (2) so as to add, remove or alter purposes for the time being contained there.
The references in this section to the construction of the property include references to any related demolition and any off-site activities relating to the construction or demolition.