In New Zealand, the moment a home really changes hands is the moment both sides sign one document: the sale and purchase agreement, usually shortened to the SPA. It is the contract that turns an offer into a binding deal, and it carries every important detail of the transaction, the price, the conditions, the deposit, what is included, and the date the keys finally pass over. For most people this is the single biggest contract they will ever sign, and the language can feel dense and intimidating the first time you read it. The good news is that the agreement follows a familiar, well-understood structure, and once you know what each part does, it stops being a wall of legal text and becomes a clear map of the deal. This guide walks through the SPA from first signature to settlement day, so you can read it with confidence and ask the right questions. It is general guidance current at the time of writing, and your own property lawyer or conveyancer should always check the agreement before you sign, because they protect the safe, settled outcome you are buying or selling for.
The contract that ties a sale together
A sale and purchase agreement is the legally binding contract between a buyer and a seller for a property. In New Zealand most sales use a standard form agreement that the major professional bodies publish and update, which is why agreements look broadly similar from one deal to the next. That familiarity is a quiet protection for both sides, because lawyers, agents and courts all understand the standard clauses. The agreement records who the parties are, the property being sold, the agreed price, the deposit, any conditions, the chattels included, and the settlement date. Once both parties have signed and any conditions are satisfied, the contract is binding and neither side can simply walk away. An offer becomes an agreement when it is signed by both buyer and seller, and offers are often negotiated back and forth, with each side initialling changes, until the terms are agreed. Because the document binds you to the most expensive purchase or sale of your life, the single most important habit is this: have your property lawyer review the agreement before you sign, not after. Signing first and seeking advice later is how avoidable problems start.
Key clauses in a sale & purchase agreement
The agreement is built from a set of clauses, and a handful of them carry most of the weight. The purchase price and the deposit set out how much is being paid and how much is paid up front, usually on the day the contract goes unconditional. The settlement date is the day ownership and the balance of the money change hands. The chattels list spells out exactly which moveable items stay with the home. Any conditions, such as finance, a builder's report or a LIM, are written in as clauses the buyer must satisfy by set dates. There are also standard clauses covering things like the seller's obligation to maintain the property until settlement, what happens to risk and insurance, how interest applies if settlement is late, and the process for resolving disputes. Some agreements include extra special conditions negotiated for the particular deal, for example the sale being conditional on the buyer selling their own home first. None of this is window dressing; each clause changes what you are committing to. This is exactly why a lawyer reads it line by line, because a date or a tick box in the wrong place can have real consequences. To see how an offer becomes binding, read more on a conditional versus unconditional offer at /conditional-vs-unconditional-offer/.
Conditions and the cooling-off question
A common and costly misunderstanding is that New Zealand property contracts come with a general cooling-off period. As a rule, they do not. Once a sale and purchase agreement is signed and any conditions are met, it is binding, and you cannot change your mind simply because you have had second thoughts. The protection for buyers does not come from a cooling-off window; it comes from conditions. A conditional agreement gives the buyer set tasks to complete by set dates, common conditions being finance approval, a satisfactory builder's report, a LIM review, and sometimes the sale of the buyer's existing home. If a genuine condition is not satisfied, the buyer can usually withdraw without penalty, following the process in the agreement. Once every condition is confirmed, the contract goes unconditional and is fully binding on both sides. At an auction the situation is stricter still, because a winning auction bid is normally unconditional from the moment the hammer falls, with no conditions and no way out, which is why all checks must be done beforehand. The practical lesson is to never rely on being able to back out, and to make sure every protection you need is written in as a proper condition before you sign. Your lawyer will tell you whether the conditions actually protect you.
Deposit, chattels and inclusions
Two parts of the agreement cause more last-minute friction than almost anything else: the deposit and the chattels. The deposit is the part of the price paid early, often when the agreement goes unconditional, and it is usually held by the agent or a lawyer in a trust account rather than going straight to the seller. It signals the buyer's commitment and forms part of the total price paid at settlement. The chattels are the moveable items that come with the home, and the agreement lists exactly which ones are included, for example the oven, the dishwasher, the light fittings, the curtains, the heat pump or the garden shed. Anything not listed is not automatically included, and this is where disputes arise, when a buyer assumed the curtains or the spa pool were staying and the seller took them. The fix is simple but easily forgotten: read the chattels list carefully, confirm in writing anything you expect to be included, and do not assume. Fixtures that are permanently attached generally stay, while loose items generally go unless listed, but the agreement, not the assumption, is what counts. For a closer look at what counts as a chattel, read about chattels in a house sale at /chattels-in-a-house-sale/.
From unconditional to settlement day
Once the agreement is unconditional, the deal moves toward settlement, the day the property legally changes hands. In the run-up, each side's lawyer prepares: the buyer's lawyer arranges the loan funds with the bank, checks the title, and confirms the figures, while the seller's lawyer ensures the title can be transferred and any existing mortgage is repaid from the proceeds. The buyer usually does a pre-settlement inspection shortly before the day to confirm the home is in the agreed condition and the listed chattels are present. On settlement day itself, the buyer's lawyer transfers the balance of the purchase price, ownership is registered to the buyer, and the keys are released, often through the agent. If everything is in order, it is a smooth, almost anticlimactic exchange handled mostly between the lawyers. If something is wrong, a missing chattel, damage, or funds not ready, settlement can be delayed, which is why the agreement sets out what happens, including interest, if a party settles late. For most people, settlement day is the moment the house truly becomes home, and the calm of that day is built on the weeks of careful preparation behind it. You can follow the full journey for buyers at /buying-process-nz/ and for sellers at /selling-process-nz/.
Why you need a property lawyer
Through all of this, one professional is essential rather than optional: a property lawyer or conveyancer. They review the agreement before you sign so you understand what you are committing to and so the conditions actually protect you. They check the title and the LIM for anything that could affect the property. They handle the legal transfer of ownership, manage the money safely through a trust account, repay any existing mortgage, and make sure settlement happens correctly on the agreed day. They are also the person who steps in if something goes wrong, a late settlement, a dispute over chattels, or a condition that cannot be met. The cost of a lawyer is small against the value of the property and the cost of getting it wrong, and trying to save it by signing without advice is a false economy that can cost far more. Maifang is not a law firm and does not give legal advice; what we do is help you understand the process in plain English and connect you, free and with no obligation, with the licensed professionals who handle it properly. The goal is the same as yours: that the home you are buying or selling changes hands safely, so you can settle in with confidence.
In plain English: In plain English: the sale and purchase agreement is the binding contract that holds the whole deal, the price, the conditions, the deposit and the chattels, and there is normally no cooling-off period, so your protection comes from the conditions written in. Have a property lawyer read it before you sign, then they steer you through to settlement day when the keys change hands.
General information, not personalised real-estate, legal or financial advice. Confirm your situation with a licensed adviser. Read the full disclaimer →