Thinking about buying a home or refinancing in London, Ontario? Residential loans — commonly known as mortgages — are the key to making homeownership possible. Whether you’re purchasing your first property or refinancing to access equity, understanding how residential loans work in Canada can save you money, time, and stress.
This guide will walk you through the main types of mortgages, what lenders look for, and the key factors to consider before applying.

1. Understanding Residential Loans
1.1 What Are Residential Loans?
A residential loan is money borrowed from a lender (bank, credit union, or mortgage broker) to help you buy or refinance a home. You receive the funds upfront and repay them over time, with interest. In London, Ontario, residential loans are a crucial step toward building equity and long-term financial security.
Working with a local mortgage broker in London, Ontario can help you access more options than walking into your bank.
1.2 Types of Residential Loans in Canada
Unlike the U.S., where FHA or VA loans exist, Canadian mortgages fall into a few main categories:
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Conventional Mortgages – For buyers with a minimum 20% down payment, avoiding mortgage default insurance.
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High-Ratio Mortgages – For buyers with less than 20% down. These require mortgage default insurance through CMHC, Sagen, or Canada Guaranty.
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Fixed-Rate Mortgages – Your rate stays the same for the entire term (e.g., 5 years), making budgeting predictable.
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Variable-Rate Mortgages – Your interest rate fluctuates with the Bank of Canada’s policy rate, which can mean savings when rates drop.
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Home Equity Line of Credit (HELOC) – A revolving credit option that lets you borrow against the equity in your home for renovations, investments, or debt consolidation.
2. Eligibility Criteria for Residential Loans
Getting approved for a mortgage depends on several factors. Lenders want to see that you can comfortably handle your payments.
2.1 Credit Score
Most Canadian lenders prefer a score of 640 or higher, but some alternative lenders may work with lower scores if you have strong income or a larger down payment. A higher score helps unlock lower interest rates.
2.2 Income & Employment
Lenders look at your Gross Debt Service (GDS) and Total Debt Service (TDS) ratios. Generally, your housing costs should not exceed 39% of your income, and your total debts should stay under 44%. Be prepared to show pay stubs, T4s, or tax returns.
2.3 Down Payment Requirements
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5% minimum for homes up to $500,000.
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10% on the portion between $500,000 and $1,499,999.
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20% minimum for homes priced at $1.5 million or more.
Having a larger down payment reduces your loan size and can lower your monthly payments.
3. Key Considerations for Residential Loans
3.1 Interest Rates
Even a small difference in interest rates can mean thousands in savings. Compare rates, but also look at the flexibility of the mortgage (prepayment options, penalties, etc.).
3.2 Prepayment Privileges
Many lenders allow extra payments (lump sums or accelerated schedules) without penalty. Using these can shave years off your mortgage and save you significant interest.
3.3 Closing Costs
Don’t forget additional costs when buying in London, Ontario:
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Land Transfer Tax (provincial + potential municipal if applicable)
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Legal fees
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Appraisal costs
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Home inspection
Budgeting for these upfront prevents surprises on closing day.
4. The Bottom Line
Securing a residential mortgage in London, Ontario is one of the most important financial steps you’ll take. By understanding the different types of mortgages, what lenders require, and the factors that influence approval, you can make confident and informed decisions.
Whether you’re buying a first condo downtown, upsizing to a family home in Byron, or refinancing to access equity, the right mortgage strategy will help you achieve your goals faster.
Ready to take the next step? Book a free discovery call and let’s map out your best mortgage options today.