There are two answers to this question. The first comes from a calculator and a set of federal rules. The second comes from your grocery bill, your daycare costs, and how much you want left over at the end of the month.
Ottawa prices make the gap real. The Ottawa Real Estate Board reported an average residential sale price of $683,308 in July 2026 with a median of $635,000. Detached homes averaged well above that, while apartments sat far below. Where you land in that range changes the entire calculation.
The Three Rules That Set Your Maximum
Gross Debt Service
Your housing costs should stay near 39 percent of gross income. That includes the mortgage payment, property tax, heating, and half of any condo fees.
Total Debt Service
All debts together should stay near 44 percent of gross income. Car loans, student loans, credit card minimums, and support payments all count.
The Stress Test
You must qualify at your contract rate plus two percent, or 5.25 percent, whichever is higher. With the best insured 5 year fixed offers near 4 percent this summer, most buyers are tested around 6 percent. That single rule cuts buying power by roughly 15 to 20 percent compared with qualifying at the actual rate.
Real Ottawa Numbers
A Household Earning $110,000
With ten percent down and no other debts, this household can usually support a purchase in the low $500,000s. That buys a townhouse in Orleans or Barrhaven, or a condo closer to the core.
A Household Earning $150,000
With ten percent down and no other debts, the range typically reaches the high $600,000s, which lands right around the Ottawa median.
The Effect of a Car Payment
Add a $600 monthly car payment to either household and the maximum purchase price drops by roughly $100,000. Clearing consumer debt before applying is often more powerful than saving another few thousand dollars.
Test your own figures on our mortgage calculator at the qualifying rate rather than the contract rate.
The Down Payment Rules for 2026
Five percent on the first $500,000 and ten percent on the portion above, up to the insured limit of $1.5 million. Above that limit you need twenty percent.
On a $635,000 home the minimum is $38,500. Under twenty percent you also pay default insurance, which is added to the mortgage rather than paid upfront. First time buyers and buyers of new builds can access a 30 year amortization on insured mortgages, which lowers the required payment and raises the amount you qualify for.
The Costs Buyers Forget to Count
- Property tax in Ottawa, commonly $4,000 to $7,000 a year on a suburban home
- Home insurance, roughly $1,200 to $2,000 a year
- Heating and hydro through an Ottawa winter
- Condo fees where they apply
- Maintenance, generally one percent of the home value annually
- Closing costs of 1.5 to 4 percent, including land transfer tax and legal fees
Ontario refunds up to $4,000 in land transfer tax for eligible first time buyers, so make sure your lawyer claims it.
Building the Number You Can Actually Live With
Work backwards. Decide what monthly payment leaves your life intact, then find the mortgage that matches. A payment near thirty percent of take home pay leaves room to save, travel, and absorb a rate change at renewal.
Also plan for the renewal itself. If you take a variable rate today, test whether the payment still works if prime rises a full point. If you take fixed, look at what a renewal at one percent higher would cost in 2031.
Frequently Asked Questions
What income do I need to buy an average Ottawa home?
For a $683,000 purchase with ten percent down and no other debts, most lenders want household income around $150,000 once the stress test is applied.
Does a bigger down payment increase how much I can borrow?
It increases what you can buy, though your income still caps the mortgage amount. Twenty percent down also removes default insurance premiums.
How do I raise my maximum without earning more?
Clear consumer debt, add a co applicant, choose a 30 year amortization if you qualify, or improve your credit score to reach better pricing. Bank Street Mortgage can model each option for you.
Do lenders count bonus and overtime income?
Usually only with a two year history, and often averaged rather than taken in full.
Should I borrow the full amount I am approved for?
Rarely. Approval measures what your income can technically carry, not what leaves you comfortable once taxes, utilities, and life are paid.
Can I afford more with a variable rate?
Slightly, since the qualifying rate follows the lower contract rate. The trade off is exposure if the prime rises.
The Best Budget Is the One You Can Still Afford in Year Five
Affordability is not a single number handed to you by a lender. It is the payment that survives a job change, a rate increase, a new baby, or a furnace replacement. Ottawa is giving buyers more selection and more time to think than it has in several years, which is the perfect moment to buy a little below your ceiling instead of right at it. Run the numbers at the qualifying rate, add every carrying cost, and buy the home that still feels good in 2031.
Want a real affordability number based on your income and debts? Reach out to our Ottawa team for a full review.