Note: this guideline is issued by the Surveyor-General under section 7(1)(ga) of the Cadastral Survey Act 2002 about the Rules for Cadastral Survey 2010 and is not legally binding.

The following information relates to recording a stratum boundary, and its related witness marks and PRMs where required, in a CSD.

Recording stratum boundary where it is mathematically described

A Diagram of Survey must describe the spatial relationship between the stratum boundary and the other boundaries [r 9.6.10].  This information must meet the boundary accuracy standards and boundary witnessing standards.

Refer to Boundary witness accuracy applies to boundary points and stratum boundaries

Diagram showing elevation view depicting two non-primary parcels
Figure 1: Elevation view depicting two non-primary parcels
Diagram showing one method of describing a height covenant
Figure 2: One method of describing a height covenant (using a stratum boundary)

Recording witness marks and PRMs for stratum boundary

Where a stratum boundary is used, the required witness marks and PRMs and vectors between them (refer to rules 7.3.1(d), 7.3.2, 7.4.3(d), and 9.6.10) must be electronically captured and depicted in Landonline generated diagrams.

Most of the information relating to a unit CSD or cross lease CSD is depicted on plan graphics. On these CSDs the Diagram of Survey will include an additional Landonline generated diagram of the required witness marks and PRMs and the vectors between them.

Recording stratum boundary where it is surface or bed of a water body

Where a stratum boundary is the surface or the bed of a water body, the Diagram of Survey and Diagram of Parcels must describe the legal boundary that is the stratum boundary [r 9.6.7(c) and r 10.4.5(c)].  Examples are '80 m contour (Moturiki Datum)' or 'bed of lake'.

Note, the requirement for a legal description must not be confused with the physical description although, in some cases, they may be the same.

Refer to CSD diagrams must include the legal boundary description

Last Updated: 31 March 2017
Authority: Surveyor-General - Section 7(1)(ga) of the Cadastral Survey Act 2002
LINZ OP G : 00046