Pre-approval sits at an awkward point in the buying process. It arrives early enough that people treat it as a formality, and it carries enough authority that they treat it as a guarantee. It is neither.

Understanding what it actually is — and the several ordinary things that can undo one without you noticing — is the difference between bidding with confidence and discovering a problem after you have signed.

The word doing the work is “conditional”

Pre-approval is a lender's indication that, based on the information you have given and the checks it has run so far, it is willing to lend you up to a certain amount. Every pre-approval is conditional. The conditions are the point, not the fine print.

What it does give you is a realistic ceiling assessed by someone who lends money for a living, rather than a number you arrived at yourself. That is genuinely useful. It just is not a cheque.

Two different things are both called pre-approval

This is where most of the confusion starts, because the same phrase covers two products that are not remotely equivalent.

  • A system-generated pre-approval is produced by an automated check against the figures you entered. Nobody has read your payslips. It is fast, it is free, and it is closer to an estimate than an approval.
  • An assessed pre-approval is one where a credit assessor has actually looked at your documents — income, expenses, debts, credit file — and formed a view. It takes longer and it is worth considerably more.

Both may arrive as a confident-sounding letter. If you are heading to auction, the distinction matters enormously, and it is worth asking directly which one you are holding. Our pre-approval service page covers how we approach getting the second kind in place.

It approves you — not the property

A pre-approval assesses you. The property is assessed separately, after you have found one, and it can fail on its own merits even when your finances are perfectly sound.

The valuation is the usual sticking point: the lender values the property itself, and if that valuation lands below the price you agreed, the shortfall comes out of your deposit rather than the loan. Beyond that, certain properties attract more scrutiny than others — small apartments, unusual construction, very large blocks, serviced or student accommodation, and anything where a strata report reveals significant upcoming works.

None of this shows up in your pre-approval letter, because none of it is about you.

How long it lasts, and what quietly ends it early

Pre-approvals carry an expiry — commonly around three months, though it varies between lenders. Extending one is usually possible, but it generally means refreshing your documents rather than ticking a box.

The expiry date is the visible limit. The more common problem is a pre-approval that is still in date but no longer reflects your position, because something changed:

  • A job change, even a better-paid one. Probation periods and a switch from PAYG to contracting both change how income is assessed.
  • New debt. A car loan taken out between pre-approval and purchase reduces your capacity directly.
  • A new credit card — or an increased limit on an existing one. Capacity is assessed on the limit, not the balance, so an unused card still counts against you.
  • Buy-now-pay-later accounts, which people frequently forget are visible and are treated as commitments.
  • A change in your spending pattern in the months before settlement, since recent statements are what get re-checked.

The pattern worth noticing is that all of these are normal life events. Nobody sets out to sabotage their own application; they buy a car. Treating the period between pre-approval and settlement as a hold on major financial changes is the simplest way to avoid it.

Does applying hurt your credit score?

An assessed pre-approval generally involves a credit enquiry, and that enquiry is recorded. A single enquiry is a normal, expected part of buying property and is not the thing to worry about.

What does damage is a cluster of applications lodged with several lenders in quick succession, which reads as someone being repeatedly declined. That is an argument for working out which lender fits your circumstances before applying, rather than for avoiding pre-approval.

At auction, the distinction becomes expensive

An auction purchase has no cooling-off period and no finance clause. The contract is unconditional on the fall of the hammer, and the deposit is payable on the day. If finance does not come through afterwards, that is a problem you own, not one the contract protects you from.

This is precisely where a system-generated pre-approval is dangerous. It reads like an approval, and it has not been assessed by anyone. Private treaty gives you more room — a finance clause and a cooling-off period — but auction gives you none, and it is worth knowing which kind of pre-approval you hold before you raise a hand.

What speeds it up

Most delays come from the file arriving incomplete and going back and forth. Having the usual material together at the outset removes most of that:

  • Recent payslips, and a tax return or group certificate.
  • For self-employed applicants, two years of tax returns and business financials — we cover the detail in our guide to self-employed home loans.
  • Bank statements covering your day-to-day spending.
  • A list of existing debts, including credit card limits rather than balances.
  • Identification.

It is also worth being straightforward about anything irregular — a recent job change, a period of leave, an unusual expense. Assessors find these things anyway, and an explanation supplied upfront is a much smaller obstacle than one discovered later.

Where it fits

Pre-approval is best thought of as the point where a rough idea of your budget becomes a tested one. It tells you what you can realistically bid, it signals to agents that you are a genuine buyer, and it surfaces problems while they are still cheap to fix.

What it does not do is remove the property assessment, survive major changes to your finances, or guarantee settlement. Holding both halves of that in mind is the whole skill.

If you want a sense of the number before you start, our guide to borrowing capacity covers what lenders actually assess. When you are ready to put a real pre-approval in place, talk to a Sabea broker.

General information only. It does not take your objectives, financial situation or needs into account, and it is not credit or financial advice. Lender policy, rates and eligibility change regularly and vary between lenders — talk to us about your own circumstances before acting on anything here.