Securing home loan pre-approval
By Ali Hasani, Founder and Principal Mortgage Broker at Buyvest, MFAA accredited. Last updated July 2026. Lender timeframes and policies vary.
The part most guides skip is that not all pre-approvals are equal. An instant online figure and a fully assessed approval look similar on paper and behave very differently when you are bidding.
The short version: Pre-approval is a lender's conditional agreement to lend a specific amount, subject to a property valuation and no material change in your circumstances. It usually takes 3 to 10 days and holds for around 3 months. Insist on a fully assessed pre-approval rather than a system-generated estimate, because only one of them means a credit assessor has actually looked at your documents.
What is pre-approval?
A written statement from a lender saying it is willing to lend you up to a specified amount, subject to conditions. It is also called conditional approval or approval in principle. It is not a guaranteed loan offer.
The lender reviews your income, expenses, debts and credit history, and concludes that on what it knows today you meet its criteria. Two conditions almost always remain: a satisfactory valuation of whatever you end up buying, and no material change to your circumstances in the meantime.
What it buys you is a real number to search against, and credibility. An agent weighing two similar offers will steer the vendor towards the buyer whose finance is already moving.
What is the difference between system-generated and fully assessed pre-approval?
A system-generated pre-approval is an automated estimate based on what you typed in. A fully assessed pre-approval means a credit assessor has verified your documents. Only the second one is worth relying on.
| System-generated | Fully assessed | |
|---|---|---|
| Who reviews it | An automated system | A credit assessor |
| Information used | Self-reported, limited | Verified payslips, statements, ID |
| Time to issue | Minutes to hours | 3 to 10 days |
| How agents treat it | Weakly, if at all | As genuine finance backing |
| Risk of falling over later | High | Much lower |
System-generated approvals exist because they are fast and cheap for the lender. They are useful as a rough guide early on. They are not a basis for bidding, because nobody has checked whether the numbers you entered survive contact with your bank statements.
This matters most at auction. There is no cooling off period and no finance condition, so the contract binds you the moment the hammer falls. Winning on the strength of an automated estimate that later fails assessment can cost you your deposit. Ask your lender or broker in writing which type you have been issued.
How long does pre-approval take, and how long does it last?
Usually 3 to 10 days to be issued with a complete application, and valid for around 3 months. A well-prepared file can come back inside 3 to 5 business days.
Delays almost always trace back to incomplete documents or a lender processing queue rather than anything about your application. Preparing everything upfront is the single biggest lever on turnaround.
Validity varies between lenders, and a small number sit shorter or longer than 3 months, so confirm your expiry date when the letter arrives rather than assuming.
What documents do you need?
Identification, income evidence, bank statements showing your deposit and spending, and details of every debt you hold.
If you are employed: your last two or three payslips, your most recent tax return and notice of assessment, three to six months of bank statements, photo identification, and a list of assets and liabilities including every credit card, even ones with a zero balance.
If you are self employed: two years of personal tax returns and notices of assessment, business financial statements, ABN and registration details, six months of business bank statements, and an accountant's letter where you have one.
If part of your deposit is a gift, most lenders want a signed letter in their own format. Bear in mind a gift usually will not satisfy the genuine savings test on its own.
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How does the process work?
A conversation about your position, a document checklist, then one application to the lender most likely to say yes on the terms you want.
The initial conversation
Income, debts, deposit, and what you are trying to buy. From that you get a document checklist and a view on which lenders suit your situation. It is also where scheme eligibility gets checked, because the 5% Deposit Scheme and Help to Buy both change which lenders are even available to you.
Choosing the lender
This is where the outcome is decided. Credit policies differ considerably on casual and contract income, deposit sources, acceptable property types and postcodes. Going to the lender you already bank with is a coin toss. Our choosing the right finance guide covers loan features once the lender is settled.
Application and assessment
You receive a Credit Guide and a Credit Proposal setting out the recommendation and why it suits you. Documents are signed electronically, the application goes in, and the lender verifies your income and employment and runs a credit check. Then the pre-approval letter issues, with its conditions and expiry stated.
Under the 5% Deposit Scheme a second clock starts. Once pre-approval is issued you have 90 days to find a home and sign a contract of sale. That runs shorter than most pre-approval periods, so if you are using the scheme, the 90 days is your real deadline.
What can still go wrong after pre-approval?
Five things, and four of them are inside your control. Pre-approval is conditional, and lenders re-verify before they fund.
- A valuation shortfall. The lender's valuation lands below your contract price, so it lends against the lower figure and the gap becomes yours. The most common cause of a purchase collapsing at this stage.
- New debt. A car loan, a personal loan, a new credit card or a buy now pay later account changes your serviceability. Even an application rather than a drawdown can trigger reassessment.
- A change in income or employment. Switching jobs, moving from full time to part time or to contract, or a drop in hours. Even a promotion means fresh paperwork and delay.
- Your pre-approval was never fully assessed. An automated estimate that has not survived document verification can simply fail when the real assessment happens.
- Lender policy changes. Occasionally a lender tightens criteria between pre-approval and settlement, which is outside anyone's control but is why lender choice and a broker relationship matter.
The practical rule for the period between pre-approval and settlement is to change nothing. Keep saving, keep your rent and bills on time, apply for no new credit of any kind, and tell your broker the same day if your employment shifts.
What happens when pre-approval expires?
You reapply with updated payslips and bank statements. If nothing material has changed it is usually quicker than the original, but it is a fresh assessment rather than a rubber stamp.
Set a reminder two weeks before your expiry date so there is no gap while you are still searching. Losing pre-approval mid-negotiation is avoidable and awkward.
Renewal is also a good moment to review whether the original lender is still the right one. Rates, policies and your own position all move over three months, and if your deposit has grown enough to cross an LVR band, the picture may have changed materially in your favour.
What happens after pre-approval?
You search, make an offer, exchange contracts, and the lender converts your conditional approval into unconditional approval after valuing the property. From there it runs to settlement.
Our pre-approval to settlement guide covers that whole sequence, including exchange, the deposit payable and the 42 day NSW settlement period. For the buying side, see purchase methods and valuations, and for what to buy, how to buy the right property.
Before you get there, make sure the benefits are lined up: NSW stamp duty, the First Home Owner Grant, and the First Home Super Saver scheme if you are releasing super, which takes weeks and needs starting early.
Frequently asked questions
How long does pre-approval last?
Around 3 months with most lenders, though the period varies, so check your letter. If it expires before you find a property you can reapply with updated payslips and bank statements, which is usually faster than the original application if nothing material has changed.
What is the difference between system-generated and fully assessed pre-approval?
A system-generated pre-approval is an automated estimate based on information you supply yourself, issued in minutes without anyone checking your documents. A fully assessed pre-approval means a credit assessor has verified your payslips, statements and identification. Only the fully assessed version is treated as genuine finance backing, and only it is safe to bid on.
How long does pre-approval take?
Usually 3 to 10 days with a complete application, and a well-prepared file can come back inside 3 to 5 business days. Delays are almost always missing documents or lender processing queues rather than anything about your application.
Does pre-approval affect my credit score?
A formal pre-approval involves a credit enquiry, which is recorded on your file. One enquiry has a small, temporary effect. Several in a short window can signal financial stress and do more damage, which is a reason to have someone assess lender criteria before applying rather than shopping around with applications.
Is pre-approval a guarantee my loan will be approved?
No. It is conditional on a satisfactory property valuation and no material change in your circumstances. The lender re-verifies before funding, so new debt, a change of employment or a valuation shortfall can all undo it.
Can pre-approval be declined?
Yes, commonly for insufficient income, existing debt levels, credit history or unstable employment. Ask for the specific reason rather than reapplying blind, because a second decline compounds the problem. Sometimes the fix is a different lender, sometimes it is three to six months of changed habits.
Can I apply for pre-approval with more than one lender?
You can, but each application usually means a credit enquiry, and several enquiries close together work against you. The better approach is to assess lender criteria first and lodge one well-matched application.
What should I avoid while I am pre-approved?
Do not apply for new credit of any kind, including buy now pay later, and do not take on a car or personal loan. Do not change jobs if you can help it. Keep saving, keep rent and bills on time, and tell your broker the same day if anything changes.
Does pre-approval cost anything?
Most lenders do not charge for it, and some charge an application fee that is often credited if you proceed. Our service is free to you because the lender pays us when your loan settles.
Next steps
Work out your position first with our property deposit calculator and mortgage repayment calculator, and read the budgeting guide so the number you get approved for and the number you can live with are both on the table.
Learn more about our team, or see our service areas across 220+ Sydney suburbs.
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Email: hello@buyvest.com.au
Related resources
Pre-approval to settlement | Budgeting guide | Genuine savings | Loan to Value Ratio | Bank valuations | Choosing the right finance | Deposit options
Service areas: 220+ suburbs across Sydney including Ryde | Parramatta | Baulkham Hills | Gladesville | Penrith | Chatswood | Castle Hill | Epping | Hornsby | Blacktown | Bankstown | Hurstville | Sutherland | Manly | Bondi | Sydney CBD and more
This article is general information only and does not take your personal circumstances into account. Pre-approval types, validity periods, turnaround times and credit policies vary between lenders and change over time. Confirm your position with a licensed broker or lender before relying on it. Ali Hasani is an Authorised Credit Representative (CRN 567392) of Connective Credit Services Pty Ltd (Australian Credit Licence 389328).
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Important stuff:
Please note that the views and opinions expressed in this post are general information only, and this is not financial advice.
Any advice and information is provided by Buyvest Pty Ltd is general in nature, for educational purposes only and is not intended to constitute specialist or personal advice. This website has been prepared without considering your objectives, financial situation or needs. Therefore, consider the appropriateness of the advice for your situation and needs before taking any action. It should not be relied upon to enter into any legal or financial commitments. Specific investment advice should be obtained from a suitably qualified professional before adopting any investment strategy. If any financial product has been mentioned, you should obtain and read a copy of the relevant Product Disclosure Statement and consider the information contained within that Statement concerning your circumstances before deciding whether to acquire the product. You can obtain a copy of the PDS by emailing hello@buyvest.com.au. If you want to change your financial circumstances, such as applying for a loan, all loan applications are subject to credit approval.
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