Understanding Separation and Relationship Property Agreements
22 September 2024

Separation and relationship property agreements are crucial legal tools that can be made at any time - before, during, or after a relationship. 

These agreements help clarify who owns what during and after a relationship ensuring that each party knows who owns which assets.

The key law in this area in New Zealand is The Property (Relationships) Act 1976 (PRA). This law says that partners usually share ownership of:

·      the family home;

·      family belongings (like furniture); and

·      any property acquired during the relationship.


The PRA states that any property bought during the relationship is usually considered shared property and is typically split equally if the relationship ends. The family home is treated differently; it is usually shared equally, no matter who owned it before the relationship or how much each partner contributed.


Section 21 Agreements

To ensure a Section 21 agreement is valid, it must meet specific requirements:

·      The agreement must be in writing and signed by both parties.

·      Each party must receive independent legal advice before signing.

·      The signatures must be witnessed by a lawyer.

·      The witnessing lawyer must certify that they explained the agreement’s effects and implications to the signing party.


Even if an agreement satisfies these requirements, a court can set aside (cancel) an agreement if it considers that the agreement would cause serious injustice. For an agreement to be cancelled, this generally depends on whether the agreement was entered into freely and if the terms of the agreement are not fair.

 

Contracting Out Agreements

The couple in the relationship may choose to enter a Section 21 agreement.  This agreement is a legal contract that allows couples to decide how to divide their property if they separate, overriding the default rules set by the Property (Relationships) Act.


Commonly known as ‘pre-nups’, these agreements are essential if you’ve been in a de facto relationship for three years or more, are married, or in a civil union. The PRA applies here. A de facto relationship is defined as “living together as a couple,” which can include not physically living together but demonstrating a commitment to a shared life.


Why have one? If you have any concerns, it’s smart to create a contracting out agreement. These agreements are particularly important in second relationships. Recent legal cases show that putting a home in a trust before entering a PRA relationship won’t protect your assets. Agreements not signed and certified by lawyers won’t hold up in court. These agreements let you decide how to manage your assets and protect certain items if the relationship ends.

 

Post-Separation Agreements

These agreements clarify who keeps what after a separation and whether one person needs to pay out the other to achieve an equal division of the relationship property. It’s important to finalise a separation agreement quickly. Until it’s signed, all shared property remains shared. This means if you buy a house or pay off a mortgage alone, it’s still considered shared property, and your ex could claim it later. They might also have a claim to your estate if you pass away before finalising the agreement.



Separation and relationship property agreements provide important legal protection. Understanding the PRA and the requirements for these agreements helps ensure your assets are safe and ownership is clear. Whether starting a new relationship, currently in one, or recently separated, it’s wise to seek legal advice and consider these agreements to protect your interests.


Our team has experts in this area who are ready to help you navigate your options and make the best choices for your future.

Join our Newsletter

Stay tuned

Contact Us

3 August 2026
1. Myth: “The Property Relationships Act applies after 2 years!” - Wrong Generally, the time period for a relationship to become what is known as a qualifying relationship under the Property (Relationships) Act 1976 is 3 years from the commencement of the relationship. This time period can be shorter if there is a child in the relationship or the applicant has made a substantial contribution to the relationship. The 2 year period is the period a married couple must be separated before the marriage can be dissolved (i.e. divorced). 2. Myth: “It’s my property – I can leave it to whomever I want!” Wrong (sort of) This statement highlights the tension between what lawyers refer to as “testamentary freedom” that a Will-maker has and rights certain persons have under various statutes and law. While it is true that a Will-maker can do what they want with their property, this is not absolute. A Court can order a different distribution where a Will-maker fails in what is known as their “moral duty” to make “proper maintenance and support” for family members. In addition partners have rights under the Property (Relationships) Act 1976, and the Law Reform (Testamentary Promises) Act 1949 can assist persons to whom the Will-maker has made promises to provide for them in return for work or services done in the Will-maker’s lifetime. The rules of equity may also affect the Will-maker’s testamentary freedom. 3. Myth: “I’ve been in a relationship for 30 years so surely I can make decisions for my partner who has lost mental capacity!” – Wrong Despite the length of a relationship (marriage/de facto/civil union) if one of the partners loses mental capacity the other partner has no right to make decisions for their incapacitated partner in relation to their property and/or their personal care and welfare, unless the incapacitated partner has completed Enduring Powers of Attorney. If the incapacitated partner has not completed Enduring Powers of Attorney applications to the Family Court will need to be made for the appointment of a Property Manager (or Administrator if there are not significant assets) and a Welfare Guardian. 4. Myth: “I can buy/sell a house without a lawyer involved” – Wrong (sort of) In theory, a layperson can buy or sell a home without the involvement of a lawyer but (and it is a big but) it would be very difficult to do so (not to mention the risk of doing so). If bank lending is involved, the bank will insist on the involvement of a lawyer to act on its behalf and may even decline to lend if a buyer is not legally represented. Even if the bank was prepared to lend it is likely it and its lawyers would impose so many conditions and requirements (in order to protect the bank’s position) that it may be practically too difficult for a buyer act for themselves. Furthermore, with the land register now being predominantly electronic, relying on lawyers with the requisite certifications, it will be difficult for a non-licenced person to transact the registrations. Again, in theory, these can be done manually in paper form but the formalities involved in doing so is likely to make it practically difficult (if not impossible) for a buyer or seller to do so. This is general information about the current law, not advice on a specific matter. Article by: Kevin Callinicos
2 August 2026
After 135 years in Hawke's Bay, the community is just part of how the Willis Legal works. With offices in Napier and Hastings, we are never far away from helping you with any legal matter.
29 July 2026
Buying your first home? We've helped hundreds of people through this exact process. Our free First Home Buyers' Guide covers everything you wish you knew before you started.
Show More