Unit titles are becoming more common as residential land becomes more scarce.  Not only do they appear in apartment developments but also free-standing units in residential and commercial developments as well.


Purchasing, owning and selling a unit title property is different from a standard freehold property.  This article sets out useful background information on unit titles.  See also our separate Atticus Legal article on disclosures required, and recommended, on sale and purchase of a unit title at https://atticuslegal.co.nz/disclosure-requirements-on-sale-of-a-unit-title/

Unit title ownership under the Unit Titles Act 2010 (the Act) gives the individual owner (the ‘unit proprietor’) ownership of his or her principal unit (and accessory units, if any), but excludes anything outside that space which will either belong to another unit proprietor or be common property.


Body corporate: Under the Act a body corporate is established and all the unit proprietors are automatically members.  It’s like a company that represents all unit owners and ‘governs’ the entire unit title development.  The body corporate (and any body corporate committee elected by the members) administers the land and buildings, enforces the body corporate rules and takes the steps needed to satisfy the requirements of the Act and the body corporate rules.  The duties of the body corporate include:

  1. insuring the development, including all units and common property, and paying the premiums (except where, in limited circumstances, the body corporate decides that each unit proprietor is to insure their own unit – see below);
  2. maintaining and repairing the common property (as well as the ‘building elements’ and infrastructure that serves more than one unit) and replacing these where necessary;
  3. establishing a fund for payment of operating and administrative expenses, insurance premiums and other outgoings and levying contributions from the unit proprietors for these purposes in proportion to their respective ‘utility interests’; and
  4. establishing a long-term maintenance plan and, unless opted out by resolution of the members, a long-term maintenance fund (and possibly a contingency fund) and levying the unit proprietors accordingly.

Principal unit: Depending on the type of development, this type of unit is intended for use either as a place of residence, business or otherwise (use rights are set out in the body corporate rules).

Accessory unit: This type of unit is intended to be used in conjunction with a principal unit.   Title to it cannot be separated from the principal unit and it cannot be sold separately unless transferred to the owner of another unit on the same unit plan. Examples of accessory units are garages, carparks and storage space.

Common property: This is part of the land on the unit plan that is not included in any principal or accessory unit (eg. driveways, stairways and other facilities for common use).  Common property is effectively owned by all the unit proprietors in proportion to their respective ‘ownership interest’.  However, its use is governed by the body corporate and the body corporate rules and it is maintained and insured by the body corporate.

Ownership interest: An ownership interest is assigned to every principal unit and accessory unit based on the relative value of a unit compared to other units in the development at the time the development is established.  It is used to determine such matters as voting rights at general meetings as well as each proprietors’ liability to contribute to any legal proceedings brought by/against the body corporate or to contribute to any capital improvement fund (if any).

Utility interest: This is the same as the ownership interest except that it can be changed by the body corporate, by resolution of the members.  It is used to determine such matters as each proprietors’ liability to contribute to body corporate operating costs (eg. costs of administration, insurance, common property expenses and current maintenance) as well as contributions to any contingency fund or long-term maintenance fund, if any.  Annual levies require the approval of a resolution of the body corporate members.  Note that a member may not be permitted to vote at a general meeting if their levies are in arrears.


All unit title proprietors are required to maintain and repair the interior (non-structural parts) of their own unit.  However, a unit proprietor is not permitted to make additions or structural alterations to any unit (or the ‘building elements’ or infrastructure) without first obtaining the written consent of the body corporate.  The body corporate will refuse consent if the proposal involves a change to the building elements or structural work that affects other units or common property or any change to the external dimensions of the unit (eg. adding a deck or balcony).

‘Building elements’ include the structure of the building itself, roof, cladding, balconies, etc.   ‘Infrastructure’ means wires and pipes, etc serving or running to/from any unit or the common property.


See our separate information sheet specifically relating to the disclosure statements required, and recommended, on the sale and purchase of a unit at https://atticuslegal.co.nz/disclosure-requirements-on-sale-of-a-unit-title/


The body corporate is required to insure the entire unit title development, including all units and any common property.  However, rarely and in limited circumstances involving stand-alone units, the body corporate can determine (subject to the approval of a resolution of the members) that the unit proprietors must insure their own units.  Any claims under the body corporate insurance are mana