---
title: "Relationship Property & Separation | Wakatipu Chambers — Queenstown Barristers"
description: "Separation agreements, the equal-sharing rule and what actually falls into the property pool, contracting out (prenup and postnup) agreements, KiwiSaver and the family home — worked through in plain English, with the s21F formalities done properly so the deal you reach is one that holds."
url: https://barristers.net.nz/services/relationship-property-separation/
---
# A fair split is drafted, not assumed.
> Separation agreements, the equal-sharing rule and what actually falls into the property pool, contracting out (prenup and postnup) agreements, KiwiSaver and the family home — worked through in plain English, with the s21F formalities done properly so the deal you reach is one that holds.
From chambers in Queenstown we take relationship property and separation instructions across New Zealand — division of the property pool under the Property (Relationships) Act 1976, separation agreements and s21F certification, contracting out (prenup and postnup) agreements, KiwiSaver division, and advice on separating while still under one roof.
## An amicable separation doesn't need two legal teams.
Where a couple has already reached broad agreement and the finances are not complicated, Piers Blomfield — who runs the relationship property practice at chambers — can guide both of them through the process as a neutral facilitator: mapping the property pool, the arrangements for the children and the draft separation agreement in one process instead of two opposing files. In that role he is not either partner's legal adviser — before signing, each of you takes independent advice from your own lawyer, as s21F requires — but the groundwork is built once rather than twice: quicker, less duplicated effort, and far less heat.
### The 50/50 rule & the property pool

The Property (Relationships) Act 1976 sets the framework: once a de facto relationship, marriage or civil union has lasted three years, the property built up during it is presumed to be shared equally on separation. Whose name sits on the title, and who paid, generally does not decide the outcome — the home and its contents, joint accounts and savings, vehicles, businesses and the KiwiSaver contributed while you were together all fall into the pool to be divided.

The real contest is usually over what stays out. Separate property — what each partner owned before the relationship, along with inheritances, gifts and ACC compensation payments — normally remains with its owner, but only while it is genuinely kept apart. An inheritance paid into the mortgage on the family home, or pre-relationship savings mixed through a joint account, can be absorbed into the pool through intermingling.

Equal sharing is a default, and the Act allows departures from it: relationships under three years are divided on contributions instead; a partner left significantly worse off financially can seek an economic disparity adjustment; and under s13, extraordinary circumstances that would make equal sharing repugnant to justice can move the division off 50/50 — a deliberately high bar the courts reserve for the rare case. Working out which side of those lines your assets fall — early, on the documents — is most of the job.

- Equal sharing presumed after three years — de facto, marriage or civil union
- The pool takes in the home, chattels, businesses, savings and KiwiSaver
- Pre-relationship assets, inheritances and gifts stay separate until intermingled
- Departures: short relationships, economic disparity, and s13 extraordinary circumstances

- [How are assets divided in a divorce?](https://barristers.net.nz/services/family-law/asset-division)

### Separation agreements

In New Zealand nothing formal has to be filed to separate — the law asks whether the relationship has genuinely ended in substance, with the couple leading separate lives even if still under the same roof. A separation agreement puts that on paper: it fixes the date the relationship ended, which is the date the two-year divorce clock and other time limits run from, and records what has been agreed about property, debts, the children and any support.

For the property side of the agreement to bind, section 21F of the Property (Relationships) Act 1976 imposes non-negotiable formalities: the agreement must be written and signed, each partner needs advice from their own lawyer first, that lawyer must certify the advice on the document, and no one can have been pressured into it. An agreement signed around those requirements — usually to save fees — is the kind the Family Court later sets aside, and re-opening a division costs far more than doing it correctly the first time.

Two things routinely get missed. KiwiSaver is one: the contributions that went in while you were together are relationship property, however much they feel like personal savings, and leaving them out of the agreement leaves them unresolved. The other is the parenting side — the Family Court always keeps oversight where a child's welfare is in issue, so parenting clauses work best drafted with room to move as children grow, not as fixed terms.

- Fixes the separation date — divorce and time limits run from it
- s21F: written, signed, advised independently, certified by each lawyer
- KiwiSaver is part of the settlement — and commonly forgotten
- Parenting clauses stay reviewable where a child's welfare is in issue

- [What is a separation agreement?](https://barristers.net.nz/services/family-law/separation-agreement)

### Contracting out — prenups & postnups

A contracting out agreement puts the division rules in the couple's own hands — under section 21 of the Property (Relationships) Act, partners can settle between themselves how their property would be dealt with, so the default equal-sharing regime never has to be argued over. The label "prenup" undersells the tool: the same agreement can be signed before the relationship, years into it, or as part of untangling it at the end — and it earns its keep most where one partner arrives with more to protect, whether an established business, family money or an inheritance, a home already owned, or children whose interests come first.

The formalities mirror the separation agreement rules, and they are where these agreements live or die: each partner needs their own lawyer's advice, and the agreement must carry each lawyer's certificate confirming that the advice took place. Skip or shortcut that step and the agreement is exposed — certification failures are the most common route by which contracting out agreements come apart in court.

None of this signals mistrust; the point is certainty, settled while both partners are on the same side of the table. The wider case law is worth knowing too — the PRA reaches beyond separations into estates and family protection claims, and our summary of the leading authorities in that territory, from *Public Trust v Whyman* through to *Cartwright v Joseph*, is linked below.

- Section 21 PRA — the couple writes its own division rules
- Signed before the relationship, during it, or while ending it
- Independent advice and certification are conditions of enforceability
- Strongest where prior assets, businesses or blended families are involved

- [Leading PRA cases](https://barristers.net.nz/services/family-law/leading-pra-cases)
Part of: [Family Law](https://barristers.net.nz/services/family-law)

## Frequently asked questions
**How are assets divided after a separation in New Zealand?**

The Property (Relationships) Act 1976 governs asset division in NZ. After a marriage, civil union or de facto relationship of three years or more, relationship property — the family home, joint accounts, KiwiSaver contributions during the relationship, vehicles, businesses — is usually split equally (50/50). Separate property, like assets owned before the relationship, inheritances or gifts, is generally excluded. There are exceptions for short relationships, significant economic disparity, and — rarely — extraordinary circumstances that would make equal sharing repugnant to justice.

**Can you be "separated" while still living in the same house?**

Yes — under New Zealand law, you can be "separated under one roof" while continuing to live in the same property, provided the relationship has ended in substance (separate finances, sleeping arrangements, social lives, and intent). A separation agreement can record the date of separation and the practical arrangements, which is useful when applying for divorce later or sorting out relationship property.

**What is a contracting out (prenup) agreement?**

A contracting out agreement under section 21 of the Property (Relationships) Act lets a couple decide how their property will be divided if the relationship ends — overriding the default 50/50 rule. Both parties must take independent legal advice for the agreement to be enforceable. They are most useful where one partner has substantial pre-relationship assets, a business, an inheritance, or children from a previous relationship.

**How is KiwiSaver divided on separation?**

It depends when the contributions were made. In a qualifying relationship, the portion of each KiwiSaver balance built up while the relationship was on foot is treated as relationship property, while anything contributed beforehand generally stays separate. Any split is dealt with by agreement (each partner separately advised by their own lawyer) or by a Family Court order transferring funds from one KiwiSaver account to the other — the money cannot be withdrawn as cash to settle a claim. Where both partners hold similar balances, the division often simply offsets and nothing changes hands.