Help guide
Home loan pre-approval vs unconditional approval
The difference between a system-generated pre-approval, conditional approval and unconditional finance — how long each lasts, and what actually overturns one.
Three different things all called “approval”
Three separate stages that lenders, brokers and agents all describe loosely as approval. A pre-approval, sometimes called approval in principle, is an indication of what a lender would advance based on the information supplied so far. A conditional approval is a credit decision made subject to named conditions, usually a satisfactory valuation and a signed contract. Unconditional or formal approval is the only one of the three that means the lender has committed to fund.
The gap between them matters because only the last one makes it safe to go unconditional on a contract. Agents ask whether you are pre-approved and treat a yes as certainty. It is not, and the letter you were emailed will usually say so in its first paragraph — the wording is almost always that the lender may withdraw the indication at any time.
System-generated versus fully assessed pre-approval
The distinction that decides how much your letter is worth is whether a human credit assessor looked at the file. A system-generated pre-approval is produced by the lender’s decisioning engine from data you keyed in, sometimes within minutes and often without a single payslip attached. A fully assessed pre-approval means an assessor has verified income documents, run a credit bureau enquiry and recorded an actual decision against policy.
Both arrive as a PDF with the same logo on it, so ask your broker which one you hold. The usual tell is the condition list: an assessed pre-approval names a short list of specific outstanding items, while a system-generated one carries a long generic list that still includes verification of income and expenses. At auction the two are worth very different amounts.
How long it lasts, and what a re-issue costs you
Most Australian pre-approvals run 90 days, with some lenders at 60 and a few at six months. Extension is not automatic. At expiry the lender re-runs serviceability against current policy, which in a hiking cycle means a worse answer than the one you were given three months earlier — the cash rate has risen three times during 2026 and now sits at 4.35%, and assessment floors move with it.
There is a credit-file cost as well. Each formal application lodges an enquiry, and a run of them across several lenders inside a short window reads to the next assessor as shopping under pressure. Since the Experian and illion merger on 1 April 2026 Australia has two credit bureaux rather than three, so an enquiry pattern is now easier for a lender to see whole. Re-issue with the same lender wherever you can.
What actually overturns an approval
The common causes are dull and largely preventable. A valuation below contract price is the biggest, because the lender advances against the lower of price and valuation, so a $30,000 shortfall on a 90% LVR purchase becomes a $30,000 cash problem for you. Then employment: a new role inside a probation period, a move from PAYG to contracting, or a bonus that did not repeat. Then new debt taken on between the letter and settlement.
Two more catch people regularly. Liabilities that surface in bank statements without having been declared, buy-now-pay-later commitments included, and a change in how the lender sees the property — an apartment in a building it has a concentration limit on, or a block larger than its rural residential policy allows. Each of these changes a number the original decision depended on.
What a conditional approval still needs
A conditional approval letter names its conditions and they are worth reading line by line. The usual set is a satisfactory valuation, a fully signed contract of sale, verification of the deposit and funds to complete, separate sign-off from the mortgage insurer where the loan is above 80% LVR, and evidence of building insurance noting the lender’s interest on the certificate of currency.
Turnaround varies more than buyers expect. A clean file with a desktop valuation can go unconditional in a few days; one needing a full valuation, an insurer assessment and a strata search can take two to three weeks. Ask for the expected timeframe in business days when the conditional letter arrives, not in the week your finance clause expires, and get any variation to that clause in writing from your conveyancer.
Using the stages to plan a purchase
Work backwards from the finance clause. If the contract gives you 21 days, and the lender’s current service level is five business days to a credit decision plus three to five to book a valuation, there is very little slack for a document you have not supplied. Get income evidence, identification and liability statements to your broker before you start making offers rather than after one is accepted.
At auction there is no finance clause at all, so the only sensible position is a fully assessed pre-approval plus a lender view on that specific property. Nothing here is a lender commitment or personal credit advice, but Azure Home Loans can tell you which stage your letter represents and what still sits between it and funding.
About this page
FAQ
How long does home loan pre-approval last in Australia?
Typically 90 days, though some lenders issue 60 days and a few six months. Extension is not automatic: the lender reassesses against its current policy and assessment rate, which in a rising-rate year can return a lower number than the original letter. Diarise the expiry and re-issue with the same lender where possible, so you are not adding credit enquiries across several banks.
Can a bank withdraw a pre-approval?
Yes, at any point before formal approval, because pre-approval is an indication rather than a contract. The usual triggers are a valuation short of the purchase price, a change of employment, new debt taken on after the letter issued, undisclosed liabilities in bank statements, or a policy change on that security type. The letter itself says the lender may withdraw.
Is pre-approval enough to bid at auction?
Not on its own. Auction contracts in most states are unconditional with no cooling-off period, so a pre-approval that never reached a credit assessor, on a property the lender has not valued, leaves your deposit exposed. If you intend to bid, get a fully assessed pre-approval and ask the lender for a view on that specific address before auction day.
Does getting pre-approved affect my credit score?
It can. A lender that lodges a formal application records a credit enquiry on your file, and several enquiries in a short period can read as declined applications to the next assessor. Since the Experian and illion merger on 1 April 2026 there are two bureaux in Australia, not three. Some pre-approvals are run without an enquiry, so ask your broker which type yours is.
How many pre-approvals should I get?
One, from the lender your broker expects to lodge with. Multiple pre-approvals do not increase your buying power and each one may cost a credit enquiry. Compare lenders on policy and pricing before anything is lodged, rather than by submitting to several and seeing which answers come back — the pattern that creates is visible to every assessor afterwards.
Does pre-approval lock in my interest rate?
No. Approval and pricing are separate things. A rate lock is a specific product feature, usually attached to fixed rates, that costs a fee and holds a rate for a set window from application. With the cash rate at 4.35% after three rises during 2026, the Reserve Bank holding unanimously on 11 August and the next decision due 29 September, an unlocked rate can move before settlement.
What is the difference between conditional and unconditional approval?
Conditional approval is a credit decision subject to named conditions — most often a satisfactory valuation, a signed contract and verified funds to complete. Unconditional approval means those conditions have been met and the lender has committed to fund. Only unconditional approval makes it safe to waive a finance clause or declare a contract unconditional, whatever verbal comfort you have been given.
Can I get pre-approved while on probation in a new job?
Sometimes, and the variation between lenders is unusually wide. Some accept a probationary employee who moved within the same industry with continuous prior employment, some require probation to be completed, and some accept it only at a lower LVR. Because policy differs this much, it is a lender-selection question rather than a yes or no.