How long does home loan pre-approval last (and how do you keep it alive)?

Short answer: commonly a few months

And that answer needs immediate qualification, because it varies by lender, it can end earlier than the date on the letter, and the expiry date is only half the story.

Every lender sets its own validity period, and those settings change. Some run shorter, some longer, and a few will quietly shorten the clock for certain loan types. When we arrange pre-approval for a client, confirming exactly how long that specific lender's approval runs, and what would cut it short, is part of the job. So rather than pin a number on it here, this page explains the mechanics: what pre-approval actually is, what silently invalidates one before the expiry date, how renewal works, and how to time it against the way buying actually plays out in Perth. It is general information, not personal advice, but it is the same explanation we give clients across the desk.

What pre-approval is, and what it is not

Pre-approval (some lenders call it conditional approval or approval in principle) is a lender's indication that, based on the information you have provided and the checks they have run, they would be willing to lend you up to a certain amount, subject to conditions.

The useful part is real. It tells you your price range with some authority, it shows agents you are a serious buyer, and it means the heavy lifting on your application is already done when you find the place.

But read that definition again, because the two load-bearing phrases are "based on the information you have provided" and "subject to conditions".

Pre-approval is not a guarantee of a loan. The final, unconditional approval only comes after you have a specific property under contract and the lender has valued it and re-checked your position. Conditions typically include:

• A satisfactory valuation of the property. If the lender's valuer prices the property below what you agreed to pay, the numbers can stop working even though nothing about you changed.
• The property being acceptable security. Lenders have policies on property types, sizes, locations and titles. A pre-approval issued in general does not mean every property passes.
• Your circumstances still matching the application. This is the one people trip on, and it deserves its own section.
• Verification of anything assessed provisionally. Some pre-approvals are system-generated with light checking. Ask, or have your broker confirm, how thoroughly yours was assessed, because a fully assessed pre-approval with a credit check behind it is worth far more than a ten-minute online one.

The expiry date is the deadline, not the danger

Every pre-approval carries an expiry date, and lenders put a clock on it for a sensible reason: your finances, interest rates and lending policy all move, so an assessment goes stale. Commonly the window is a few months, and it varies by lender. We confirm the exact period for yours when we arrange it.

Here is the part most buyers miss. The expiry date tells you when the pre-approval definitely ends. It does not tell you whether it is still good today. A pre-approval can be effectively dead weeks before the printed date, because it only holds while your position matches the application it was based on.

The things that quietly invalidate one:

New debt. A car loan is the classic. Sign one after pre-approval and your assessed position no longer matches your actual position, and the impact on your borrowing power is usually far bigger than the repayment suggests. We wrote a full page on how a car loan affects your home loan, and the short version is: the car comes after the keys, not before. The same logic applies to new credit cards, limit increases, personal loans and interest-free purchase plans.

Job changes. Lenders assessed a specific income from a specific employer. Changing jobs, dropping to fewer hours, moving from permanent to contract, or starting a probation period can all mean reassessment, even when the new job pays more. This does not make a good career move wrong. It makes it something to sequence, and something to tell your broker about before it happens rather than after.

Income changes. A drop in overtime, a bonus that did not repeat, or reduced commission can shift the surplus your assessment was built on.

A pile of new credit enquiries. Every formal credit application leaves a mark on your file. A cluster of them after pre-approval can prompt questions when the lender looks again at full approval.

Rate and policy changes. This one is outside your control. Lenders reassess against the rates and policy of the day, not the day you were pre-approved. If assessment rates rise or policy tightens while you are house hunting, the amount you were pre-approved for may not survive reassessment. Nothing you did wrong, but it is a reason not to let a pre-approval sit idle for months.

The practical rule for the whole pre-approval window is simple: change nothing you do not have to, and flag anything you must change before you do it.

What happens when it expires, and how renewal works

An expired pre-approval is not a disaster, and it does not hurt your credit position by itself. It just means the lender's offer has lapsed and needs to be refreshed before you can rely on it.

Renewal is usually lighter than starting again, provided nothing material has changed. Typically it means updated payslips and statements, confirmation that your position is the same, and reassessment under whatever rates and policy apply at that point. That last clause matters: renewal is not a rubber stamp of the old number. If conditions have moved, the refreshed figure can come back different, in either direction.

This is also a natural moment to re-check the lender choice. If policy has shifted, the lender who suited you a few months ago may no longer be the best fit, and part of what a broker does is rerun that comparison rather than automatically renewing with the same lender. If your circumstances have changed and you want a feel for the numbers before talking to anyone, our borrowing capacity calculator will show you the shape of it.

Timing it against the Perth buying process

Because pre-approval has a shelf life, when you get it matters as much as whether you get it.

Too early, and you burn the validity window on Saturday browsing, then face renewal right when you find the property. Too late, and you are scrambling for approval while other buyers make clean offers. In a market as quick as Perth has been, agents take offers backed by a fully assessed pre-approval seriously, and the buyer still "just waiting to talk to the bank" goes to the bottom of the pile.

The sequencing that works for most buyers: get your position assessed and your documents lined up as soon as you are serious, and take the pre-approval itself when you are genuinely ready to make offers, not months before. Then buy inside the window, and renew promptly if the search runs long.

Two Perth-specific situations deserve a flag, because their timelines routinely outlive any pre-approval. Buying a house and land package on an untitled lot means months of waiting for titles, and buying off the plan can mean longer still. In both cases the pre-approval will need refreshing along the way, sometimes more than once, and holding your position steady for the whole stretch becomes part of the plan. We cover both in detail in our house and land settlement guide and our off the plan guide.

The long view

Pre-approval is not a certificate to frame. It is a snapshot of you, a lender and a policy environment on a particular day, with a use-by date and a list of ways to void it early. Treated that way, it is one of the most useful tools a buyer has: get it when you are ready to act, keep your position steady while it runs, tell your broker before anything changes, and renew without drama when the search takes longer than planned.

That is how we run it for clients across our residential lending work: right lender for the position, a validity window confirmed rather than assumed, and someone watching the clock so you do not have to. If a pre-approval is your next step, or you have one going stale in a drawer, start here and we will tell you exactly where you stand.

Frequently asked questions