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New Zealand Map Grid (NZMG) was previously used as the projection for topographic 1:50,000 and other small-scale mapping in mainland New Zealand. New Zealand Transverse Mercator 2000 (NZTM2000) replaced NZMG in 2001 and is now the official projection used in New Zealand.

New Zealand Geodetic Datum 1949 (NZGD1949) ‘D’ coordinates were computed and adjusted in terms of New Zealand Geodetic Datum 2000 (NZGD2000) and then transformed into NZGD1949 using a grid transformation.

In May 2010, a new set of orders for positions and heights was introduced for New Zealand and the Ross Sea Region. This led to revisions in how coordinate accuracy is determined and displayed. This section also covers other order systems, including NZGD1949, previously used in New Zealand.

This page contains information on the orders that define the accuracy of coordinates and heights in New Zealand.

In 2010, 5a control marks were reclassified from order 5 to order 6. They have since been tested against the standards and the appropriate orders assigned.

The Orders of control marks have been updated to reflect the accuracy definitions in the LINZS25005 and LINZS25006 standards.

The World Geodetic System 1984 (WGS84) is a global datum, used for determining positions on the Earth's surface. The WGS84 is a reference system used by the satellite navigation systems like GPS and is used in various mapping applications.

Chatham Islands Geodetic Datum 1979 (CIGD1979) was previously used to define positions on the Chatham Islands. New Zealand Geodetic Datum 2000 (NZGD2000) is now the official datum used in the Chatham Islands, superseding CIG1979 from March 1998.

Chatham Islands Geodetic Datum 1971 (CIGD1971) was previously used to define positions on the Chatham Islands. It was replaced in 1981 by Chatham Islands Geodetic Datum 1979 (CIGD1979), and both were superseded by New Zealand Geodetic Datum 2000 (NZGD2000) from March 1998.

The mathematical parameters and equations used to convert geodetic datum coordinates to and from a Lambert conformal conic projection.

How to protect Landonline and your business from cyber attacks.

When you can apply for an exemption from farm land advertising requirements.

Find out how to pay your overseas investment fee or penalty.

Find out about the discretion to grant an exemption for an entity or entities from the definition of non-New Zealand government investor.

Find out if you need to provide tax information with your application for consent and what use is made of this data.

Landonline allows you to search for a range of property records, including titles, instruments and surveys.

The range of investment pathways, from investing in apartments, through to investing in large-scale residential development and forestry.

What a sensitive land certificate is and how to get one.

Tell us about a proposed transaction under the national security and public order notification regime.

Information on applications to undertake marine scientific research (MSR).

Guidance on complying with the Cadastral Survey Rules 2021 (CSR 2021), related legislation, and meeting Landonline requirements for cadastral survey datasets (CSDs).

Data about the marine environment which helps us understand how to protect our biodiversity and ecosystems.

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Information about dealings affecting leases, how leases affect easements and more.

Information about land transfer tax statements and the collection of tax residency data.