Traction Financial Services · Buying a home

Sale and purchase agreements, explained

Found a property you want to buy? Here's what a sale and purchase agreement is, what to look out for, and how your lawyer and mortgage adviser can help.

Before you sign anything, have your lawyer review the agreement.

A sale and purchase agreement is a legally binding contract. Even if it's a commonly used form, the terms and conditions can have a big impact on you. Your lawyer or conveyancer should check the agreement, explain your obligations and advise you on the conditions you need before you sign.

What is a sale and purchase agreement?

It's the written contract between a buyer and seller that sets out the agreed terms of a property purchase. A commonly used agreement is often prepared through the real estate agent, but different forms and additional clauses can be used.

The basics

What you'll usually see

  • The property address and buyer and seller details
  • The agreed purchase price
  • The deposit payable under the agreement
  • The settlement date
  • Any conditions and their deadlines
  • Other terms, including what is included in the sale
Who does what?

Different people, different roles

Real estate agent: helps communicate offers and negotiate terms with the seller. The agent usually works for the seller, although they must deal fairly with buyers.

Lawyer or conveyancer: reviews the contract, advises on legal risks and conditions, and manages the legal process.

Mortgage adviser: helps with the finance side, including timing for bank approval and what the lender may require.

What are conditions?

Conditions are requirements that need to be dealt with by specified deadlines. An offer can be conditional or unconditional. Your lawyer will advise which conditions are appropriate and what they mean for you.

Finance

Getting the mortgage approved

If you're borrowing to buy, the bank may need to approve the property as security and confirm that all its lending requirements are met.

How we help: we'll discuss how much time the lender is likely to need and recommend a suitable finance timeframe to discuss with your lawyer. Your lawyer will advise on the actual wording and deadline in the agreement.

Other checks

Things to discuss with your lawyer

Depending on the property and your situation, conditions might relate to a building inspection, LIM, title, valuation, sale of another property or other due diligence.

Your lawyer will help you decide which checks and protections you need and explain how the conditions operate. We won't draft or interpret those legal clauses.

Already pre-approved?

Pre-approval usually relates to your financial position. It doesn't automatically mean the bank has approved the particular property you're buying. You may still need a finance condition and time for the bank to complete its assessment. Read our Pre-Approval Explained guide.

There are two deposit amounts to understand

The word deposit gets used for two different things during a purchase. They are related, but they're not always the same amount.

01 · The contract deposit

This is the amount recorded in the sale and purchase agreement, payable at the time specified in that agreement. It might be due when the agreement is signed or when it becomes unconditional.

It's often around 10%, but the amount and timing can be negotiated. Your lawyer will explain exactly when and where it needs to be paid.

02 · Your total home deposit

This is the full amount of your own funds going towards the purchase, such as savings, eligible KiwiSaver funds and any accepted gifted contribution.

The contract deposit forms part of this amount. Any remaining contribution is generally arranged through your lawyer for settlement, alongside the mortgage funds.

Using KiwiSaver or buying with a low deposit?

Tell your lawyer and mortgage adviser before signing. You may not have enough cash available to pay a large contract deposit straight away, even if your overall home deposit is sufficient. Your lawyer can discuss the deposit amount, timing and any clauses needed, while we help coordinate the lending side. KiwiSaver withdrawal timing and requirements need to be checked with your provider and lawyer.

What happens after an offer is accepted?

01 · CONDITIONAL

Work through the conditions

We'll help coordinate the finance approval and lender requirements. Your lawyer guides the other conditions and tracks the contractual deadlines.

02 · UNCONDITIONAL

Conditions are confirmed

Once the conditions have been satisfied or otherwise dealt with under the agreement, your lawyer advises on confirming the agreement unconditional. This is an important commitment.

03 · SETTLEMENT

Complete the purchase

Your lawyer arranges the legal and payment steps for settlement, including the balance of your contribution and the mortgage funds.

The exact process and deposit payment date depend on your agreement. Your lawyer will explain what applies to you.

How Traction helps with the finance side

Before you make an offer

We'll discuss your borrowing position, whether the property is likely to need additional lender checks, and how much time may be needed for finance approval.

After your offer is accepted

We'll send the relevant information to the lender, work through any finance conditions, keep you updated and coordinate with your lawyer so they know when finance has been approved.

Your lawyer remains responsible for legal advice, reviewing the agreement, advising on contractual conditions and confirming the relevant contractual steps.

Before you sign: a quick reminder

  • Send the agreement to your lawyer before signing, including any additional clauses.
  • Talk to your mortgage adviser about the finance timeframe and lender requirements.
  • Check the contract deposit and due date with your lawyer, especially if using KiwiSaver.
  • Understand your deadlines and what happens if a condition isn't satisfied.
  • Don't assume pre-approval equals property approval or that a conditional agreement can be cancelled for any reason.

For independent consumer guidance, read the Real Estate Authority's sale and purchase agreement guide.

Thinking about making an offer?

We can help you understand the finance side before you commit, and work alongside your lawyer to keep the lending process moving.

Talk to Traction →

This resource provides general information only and is not legal advice. Sale and purchase agreements are legally binding and can differ. Always have your own lawyer or conveyancer review the agreement and advise on conditions, deposits, deadlines and your legal obligations before you sign. Lending and KiwiSaver requirements depend on your circumstances and provider.

© 2026 Traction Financial Services. All rights reserved.

0
Skip to Content
Your Site Title
Traction Home
Meet Your Advisers
Work With Traction
Contact us
Your Site Title
Traction Home
Meet Your Advisers
Work With Traction
Contact us
Traction Home
Meet Your Advisers
Work With Traction
Contact us

Traction Financial Services

About Us

Our Approach
Contact Us

Instagram
Facebook

Traction Financial Services

Hello@tractionfinancialservices.co.nz

+64 22 076 0524


Newsletter Block
This newsletter signup form needs a storage option. Edit the block and enter a storage location via the Storage tab.

Sign up to our newsletter to receive news and updates.

Thank you!

Getting you Traction on your financial goals