For any financial year, a billing authority in Wales may by determination provide in relation to its area that if on any day the conditions mentioned in subsection (2) are satisfied in respect of a dwelling—
The conditions are—
But a billing authority's first determination under this section must be made at least one year before the beginning of the financial year to which it relates.
In exercising its functions under this section a billing authority must have regard to any guidance issued by the Welsh Ministers.
The Welsh Ministers may by regulations prescribe one or more classes of dwelling in relation to which a billing authority may not make a determination under this section.
A class of dwellings may be prescribed under subsection (5) by reference to such factors as the Welsh Ministers think fit and may, amongst other factors, be prescribed by reference to—
Where a determination under this section has effect in relation to a class of dwellings—
A billing authority may make a determination varying or revoking a determination under this section for a financial year, but only before the beginning of the year.
Where a billing authority makes a determination under this section it must publish a notice of the determination in at least one newspaper circulating in its area.
The notice must be published before the end of the period of 21 days beginning with the date of the determination.
The validity of a determination is not affected by a failure to comply with subsection (9) or (10).
The Welsh Ministers may by regulations specify a different percentage limit for the limit which is for the time being specified in subsection (1)(b).
A statutory instrument containing regulations made under subsection (12) may not be made unless a draft of the instrument has been laid before, and approved by resolution of, the National Assembly for Wales.
Any other statutory instrument containing regulations made under this section is subject to annulment in pursuance of a resolution of the National Assembly for Wales.