Rule 20.2 provides that rule 18 (Boundaries affected by ground movement) does not apply to a cadastral survey in greater Christchurch.
To comply with s 8 Canterbury Property Boundaries and Related Matters Act 2016, surveyors must consider movement of land caused by the Canterbury earthquakes (whether the movement was horizontal or vertical, or both), unless the movement was a landslip. The primary focus of rule 18(1) is deep-seated movement only which applies to all areas of the country except greater Christchurch.
The provisions set out in rule 18.2 relating to acceptance of a boundary affected by ground movement no longer apply to a cadastral survey in greater Christchurch. Requirements on when a boundary must be defined by survey or accepted are now set out in rule 20.3 (Defining by survey or acceptance of affected boundaries).
The provisions for unproven marks set out in rule 18.3 no longer apply to a cadastral survey in greater Christchurch. This means old marks recorded in a CSD will need to be determined as being either in their original position (including a change in position due to any earthquake movement) or disturbed.