Updated May 1, 2026 | Published May 1, 2026
A mortgage pre-approval is an in-depth evaluation of your financial situation by a mortgage lender to determine the maximum amount you can borrow. Almost everyone who buys a home gets a pre-approval before they make an offer.
In this guide, we’ll explain how mortgage pre-approvals work, how long they take, how to get final approval, and what to expect throughout the process.

The important points
Mortgage pre-approval is the first serious step in securing a mortgage to buy real estate. A mortgage lender takes a detailed look at your financial situation and tells you how much money they’re willing to lend you for your mortgage.
“Basically, a pre-approval is a promise to lend money to the individuals to purchase a property,” said Eitan Pinsky, Owner and Mortgage Expert at Pinsky Mortgages. “The pre-approved mortgage amount is set and a home buyer can borrow up to that amount.”1
While it includes a firm dollar figure, pre-approval isn’t a binding loan agreement. The lender could still deny the final application if the chosen property doesn’t meet its standards.
“The only thing that a pre-approval has not checked is the property,” said Pinsky. “[The mortgage] will be underwritten and approved of once a specific property is being purchased.”1
Nevertheless, pre-approval is a wise step for first-time home buyers. It has four key benefits:
Bear in mind that pre-approval isn’t the same thing as pre-qualification — another term you’ll likely hear during your home search journey.
Pre-qualification is like a lighter, less comprehensive version of pre-approval.
“A pre-qualification is a calculation based on income, ongoing monthly obligations, and expected property costs,” said Pinsky. “The pre-qualification tells a homebuyer their potential purchasing power. A pre-qualification can be done in just a few minutes with a few pointed questions and it is pretty straightforward when it comes to salaried individuals.”1
Pre-qualification involves less paperwork than pre-approval.
“No upfront documents are required. However, pre-qualifications can be a little more challenging for self-employed individuals or variable income earners, and income documentation is generally needed,” said Pinsky.1
Once you’re pre-qualified, you’ll have a useful estimate of how much you can borrow. Pre-qualification is quick and easy — a great first step for home buyers.
To get pre-approved, get in touch with a mortgage lender or broker. A lender is the company underwriting the actual loan; a broker is an intermediary who can shop around on your behalf with multiple lenders.
There are many ways to choose, whether you go with a broker, a big bank, a credit union, or another type of lender. Certainly, you want the lowest possible interest rate and agreeable terms. But, you also want to deal with someone trustworthy and helpful. Choosing a mortgage and a lender is a topic all to itself.
You can get pre-approved with multiple lenders, but it’s not usually necessary.
“In general, a pre-approval at one lender is going to be quite similar at another lender,” said Pinsky. “However, if [the borrower’s] income or credit are not straightforward, it might be prudent to get multiple pre-approvals in the event that one lender, for example, does not recognize a portion of the income, whereas a different lender would. In this case, the pre-approved mortgage amounts would be different.”1
To get pre-approved, you’ll usually need to provide the following documentation:
There may be other requirements depending on your personal situation, such as residency certificates for temporary residents or mortgage statements for those who already own another property.
“Lenders generally take two to three business days to underwrite pre-approvals,” said Pinsky.
However, it might take longer in some situations.
“Delays are generally caused by lender backups, [such as] too many pre-approvals sent to the same lender at once by various brokers,” said Pinsky. “Or, incorrect or ambiguous application information. For the latter, it’s generally because the mortgage professional taking a home buyer’s application submitted incomplete information, which a better client intake process can solve.
“Lastly, insufficient documentation from a home buyer will delay the pre-approval process too.”1
You can speed up the mortgage pre-approval process with two simple steps:
Once you’ve given the lender everything they need, delays can still spring up. If you’re not in a rush, maybe that’s no problem. But if you make an offer on a house that’s accepted, you definitely don’t want the mortgage approval process holding things up.
Here are some basic tips to avoid common delays in pre-approval and approval:
Getting a mortgage pre-approval will have a minor, temporary effect on your credit score.
“A pre-approval requires a credit check to verify a borrower’s credit score and creditworthiness,” said Pinsky. “This credit check is called a ‘hard’ check, which signifies to the credit company that a potential borrower intends to apply for a loan. The hard check can decrease someone’s credit score but it generally only goes down by a few points.
“Generally, credit checks do not meaningfully impact a person’s credit score. If the score decreases at all, it usually recovers within a few months.”1
If you want to compare multiple lenders, don’t worry; multiple credit checks of the same type in a short timeframe won’t compound the effect on your credit score. Typically, credit inquiries of the same type during a period of 14 to 45 days will be grouped together as a single hard check.3
Be wary of too many credit checks of varying types, however.
“Checking credit at a bank and a broker is not a problem,” said Pinsky. “However, if a home buyer checks their credit at two banks, a broker, a currency exchange, two car dealerships, and then a payday loan corporation, the credit score will decrease significantly.
“Checking credit many times is called ‘credit seeking behaviour,’ and this can materially decrease a credit score.”1
Pre-qualifications involve only soft credit checks, which don’t affect your credit score.
Tip: to minimize the impact on your credit score, group your applications as closely together as possible, and avoid credit checks for other types of loans during this time.
ready for an online quote? Your time matters, and so does your stuff. Get a personalized home insurance quote in 5 minutes. That’s less time than it takes to wait in line for coffee.
Before you start, please review our Privacy Policy and Terms of Use.
Once you’re ready to make an offer on a house, you’ll have to get fully approved for your mortgage. You don’t have to go through final approval until your offer is accepted.
Once you’re ready, here’s what the final mortgage approval process will look like:
After you have an accepted offer and submit your final application, the final mortgage approval process typically takes one to two weeks.
Some factors can delay the process, most notably the property appraisal, which depends on the location and the availability of appraisers. If several months have passed since your initial pre-approval, the lender may also need more time to review updated financial documentation.
When you take out a mortgage, the lender will require that you maintain active home insurance coverage on the mortgaged property. You’ll need to have insurance in place before they release any mortgage funds.
It’s not necessary to buy home insurance at the pre-approval stage. In fact, you couldn’t even if you wanted to — you can’t buy insurance for a property in which you don’t have an insurable interest.
If your down payment is less than 20 percent of the purchase price of the home, you’ll also need to pay for mortgage loan insurance. This protects the lender if you can’t pay your mortgage.
You may have to pay the premiums, but insured mortgages usually get better interest rates, offsetting the added cost.4
No, pre-approval does not guarantee that you’ll be approved when it’s time to close on a home. Pre-approvals are not binding, and the lender may change their mind if your financial situation changes or if the home doesn’t meet their guidelines.
Pre-approval validity varies by lender, but generally they remain valid for 90 to 120 days.5 If your pre-approval expires, you can renew it. Renewal is generally simpler than the initial application, though you will need to provide some updated documents.
Mortgage pre-qualification and pre-approval are both free.
Your mortgage pre-approval amount is based on several factors: your income, your credit score, your debt service ratios, and others. Improving any of these factors will qualify you for a larger mortgage. Of course, that’s easier said than done.
Other options include saving for a larger down payment, which reduces the amount you’d need to borrow. Choosing a longer amortization period can also help you qualify for a larger mortgage, but you’d end up paying more for the loan in the long run.
Sources
Want to learn more? Visit our Home Buying, Selling and Moving resource centre for everything you need to know about real estate, buying a home, or moving. Or, get an online quote in under 5 minutes and find out how affordable personalized home insurance can be.
Get a personalized online home insurance quote in just 5 minutes and see how much money you can save by switching to Square One.
Even when you take precautions, accidents can happen. Home insurance is one way to protect your family against financial losses from accidents. And, home insurance can start from as little as $15/month.