Local Government Act 1993 No 30
Current version for 1 July 2020 to date (accessed 8 August 2020 at 22:43)
Chapter 15 Part 1 Section 493
493   Categories of ordinary rates and categories of land
(1)  There are 4 categories of an ordinary rate and 4 categories of rateable land—
  farmland
  residential
  mining
  business.
(2)  These categories may, at a council’s discretion, be divided into sub-categories in accordance with section 529.