How to Get Pre-Approved for a Mortgage in Ontario
Pre-approval is the step buyers most often skip or rush — and it's the one that determines whether you can actually act when you find the right home. Here's exactly what pre-approval means, what you need to get one, and how it's different from the pre-qualification most people confuse it with.
Eric Cassidy
REALTOR® · Royal LePage Triland Realty, Brokerage
Pre-Approval vs. Pre-Qualification — They're Not the Same
A pre-qualification is a rough estimate based on numbers you self-report — no documents, no credit check, no real commitment from a lender. It takes a few minutes and tells you roughly what you might be able to afford.
A pre-approval is a lender's actual written commitment to lend you a specific amount at a specific rate, based on verified income, credit, and debt documents — subject only to the property itself passing appraisal and title checks once you have one under contract. It's the version that carries real weight with a seller. For an overview of the mortgage fundamentals behind this — lender types, rate types, amortization — see the full guide to how mortgages work in Ontario.
Documents You'll Need
Having these ready before you contact a lender or broker can turn a multi-day process into a same-week one.
Self-employed buyers need more: typically two years of T1 Generals, Notices of Assessment, and business bank statements. Because self-employed income is assessed differently, working with a broker experienced in self-employed applications is worth doing early, not after a decline.
The Process, Step by Step
Once your documents are gathered, the process itself moves quickly. You submit your documentation to a lender or mortgage broker, who verifies your income, credit, and debt load, then runs your file against the mortgage stress test — you must qualify at your contracted rate plus 2%, or 5.25%, whichever is higher. If you clear that bar, the lender issues a written pre-approval letter stating your approved amount and a held rate.
With a complete document package, most pre-approvals come back within 24 to 48 hours. During the busy spring market, or if your file needs additional underwriter review, it can stretch to a few business days — another reason to start the process before you're actively touring homes, not after you've found one.
Worth knowing: Most Ontario lenders hold your pre-approved rate for 90 to 120 days. If rates drop during that window, you generally get the lower rate; if rates rise, your pre-approval rate is protected. That window is exactly why pre-approval should happen shortly before you start seriously searching — not six months in advance.
Why This Matters Before You Start Touring Homes
A pre-approval does two things at once: it tells you what you can actually afford before you fall for a home outside your range, and it tells a seller your offer is credible. In a multiple-offer situation, an offer backed by a real pre-approval is taken more seriously than one that isn't — sellers and their agents can tell the difference, and it can be the deciding factor when two offers are close. Even in London's current buyer's market, where competition is lighter than it's been in years, well-priced homes in desirable areas can still draw more than one offer, and pre-approval keeps you ready to move without a financing scramble mid-negotiation.
What Can Change or Break Your Pre-Approval
A pre-approval is based on your financial picture at the moment you apply — it isn't a guarantee that survives any change. Taking on new debt (a car loan, a new credit card, furniture financing), changing jobs, or making a large unexplained deposit into your bank account between pre-approval and closing can all affect your final approval when the lender re-verifies your file. The safest approach between pre-approval and closing: keep your finances exactly as they were the day you applied. If something in your situation is genuinely going to change, tell your broker before it happens, not after.
How to Get Pre-Approved for a Mortgage in Ontario
Here's the direct answer: gather your ID, income documents (T4s, NOA, pay stubs or employment letter), bank statements, and a list of debts, then submit them to a lender or mortgage broker. They'll verify your file and run it against the mortgage stress test, and most pre-approvals are issued within 24 to 48 hours, valid for 90 to 120 days. Do this before you start touring homes — not after you've found one — so you know your real budget and can make a credible offer the moment you're ready.
Frequently Asked Questions
How long does it take to get pre-approved for a mortgage in Ontario?
With a complete document package, most pre-approvals are issued within 24 to 48 hours. It can take a few business days longer during the busy spring market or if your file requires additional underwriter review.
How long is a mortgage pre-approval valid in Ontario?
Most lenders hold your pre-approved rate for 90 to 120 days. If you haven't found a home by the time it expires, you'll typically need to renew it, which usually means an updated document check.
What's the difference between pre-qualification and pre-approval?
Pre-qualification is a rough estimate based on self-reported numbers, with no documents or credit check involved. Pre-approval is a lender's written commitment based on verified income, credit, and debt documents — the version sellers actually take seriously.
Does getting pre-approved hurt my credit score?
A pre-approval involves a credit check, which causes a small, typically temporary dip in your score. Multiple mortgage-related credit checks within a short window (usually 14–45 days, depending on the scoring model) are generally treated as a single inquiry, so shopping a few lenders in the same timeframe won't repeatedly ding your score.
Can my mortgage pre-approval fall through after I find a home?
Yes, if your financial situation changes (new debt, a job change) or if the specific property doesn't pass appraisal or the lender's requirements. This is exactly why a financing condition in your offer matters — it protects you if final approval on the actual property doesn't come through.
READY TO START THE PROCESS?
Get Your Financing Sorted Before You Search
Eric works with a trusted local mortgage broker and can make an introduction so you walk into your search with a real number, not a guess.
Eric Cassidy
REALTOR® · Royal LePage Triland Realty, Brokerage
Eric works closely with a trusted local mortgage broker to make sure his clients start their search with a real, verified number — not a guess. Learn more about Eric.
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