Co-Ownership Agreement (New Zealand)

Under the Property Law Act 2007, there are two main forms of co-ownership of property in New Zealand: tenancy in common and joint tenancy. In a tenancy in common, each co-owner holds a distinct, undivided share of the property (e.g. 50% or 33%), which they can transfer or leave in their will independently. In a joint tenancy, each co-owner has an equal, undivided interest, and on the death of one joint tenant, their interest passes automatically to the surviving joint tenant(s) by right of survivorship — the deceased tenant's interest does not form part of their estate. Co-ownership of land in New Zealand is registered on the Certificate of Title issued by Land Information New Zealand (LINZ) under the Land Transfer Act 2017. The form of co-ownership (tenancy in common or joint tenancy) is recorded on the title. Married couples and civil union partners often hold property as joint tenants. Business partners, investors, and family members who contribute different amounts typically prefer tenancy in common, with shares proportional to their contributions recorded in a co-ownership agreement.

Co-owners of property in New Zealand owe duties to each other under the Property Law Act 2007 and common law. A co-owner who occupies the property must account to the other co-owners for their share of any rent saved by their occupation (notional rent), unless the other co-owners have consented to the sole occupation. A co-owner who receives rent from a tenant must account to the other co-owners for their proportionate share. Co-owners must share costs — including mortgage repayments (if the property is mortgaged), rates, insurance, and maintenance — in proportion to their ownership shares, unless they agree otherwise. A co-owner cannot unilaterally encumber the entire property — for example, they cannot grant a mortgage over the whole property without the consent of all co-owners. Any co-owner may apply to the High Court under section 339 of the Property Law Act 2007 for an order for partition or sale of the property if the co-owners cannot agree on its management or disposal. The co-ownership agreement should address all of these issues and provide mechanisms for resolving disputes without court proceedings.

The Property (Relationships) Act 1976 (PRA) can significantly affect co-ownership arrangements in New Zealand when co-owners are in a marriage, civil union, or de facto relationship. Under the PRA, relationship property (which includes the family home, family chattels, and property acquired during the relationship for the common use and benefit of both partners) is divided equally on separation, regardless of how the property is registered. This means that if one co-owner acquires a share of property with a partner's financial contribution (whether direct or indirect), the partner may claim an interest in that share on separation. A co-ownership agreement between unrelated parties should include a clause requiring each co-owner to require that their relationship partner has entered into a Contracting Out Agreement under section 21 of the PRA (commonly called a 'prenuptial agreement'), contracting out of the PRA in relation to that property. Without such protection, a co-ownership structure can be disrupted if one co-owner separates from their partner and the partner claims a share of the co-owned property.

If co-owners of New Zealand property cannot agree on how the property should be managed, whether it should be sold, or on any other fundamental issue, any co-owner may apply to the High Court under section 339 of the Property Law Act 2007 for a partition order (physically dividing the property, if practicable) or a sale order (requiring the property to be sold and the proceeds divided). The court has a wide discretion in determining how the property should be dealt with and may take into account factors such as the purpose for which the property was acquired, the interests of secured creditors, and the hardship to each co-owner. Court proceedings can be costly and time-consuming. A co-ownership agreement can provide contractual mechanisms for resolving disputes that avoid litigation — for example, a right of first refusal (allowing co-owners to buy out the departing owner before the property is sold to a third party), a buy-sell (shotgun) mechanism, or a provision for compulsory sale after a deadlock period. Mediation through AMINZ before commencing court proceedings is strongly encouraged and should be specified in the agreement.

A Co-Ownership Agreement (New Zealand) does not legally require a lawyer in New Zealand, and individuals and businesses may draft and execute the document independently. The Companies Act 1993 does not mandate legal representation for the creation or signing of this type of document. However, seeking independent legal advice from a qualified New Zealand lawyer is recommended for transactions involving substantial financial value, complex regulatory requirements, or cross-border elements where multiple legal jurisdictions may apply. A lawyer can verify that the document complies with all applicable statutory requirements, identify potential risks specific to the transaction, and confirm that the terms adequately protect the interests of all parties involved. The High Court of New Zealand has jurisdiction over disputes arising from this type of document, and Companies Office may impose additional compliance obligations depending on the nature of the underlying transaction. Professional legal review is particularly advisable where the document will be submitted to government agencies or used as evidence in legal proceedings.