How Lenders Treat Secondary Suite Income
Many lenders will allow a portion of actual or potential rental income from a legal secondary suite to be added to your qualifying income, which can increase how much you are approved to borrow. The exact percentage used and documentation required varies between lenders, so ask your broker which lenders are most favourable for this scenario.
Legal vs Illegal Secondary Suites
Not all basement apartments in Toronto are legally registered as secondary suites, and this matters both for lending purposes and for safety compliance. A legal suite typically has proper egress windows, fire separation, and meets building code requirements. Ask the seller or check with the city about a unit's legal status before counting on the income.
- Confirm legal status with the city
- Check for proper safety features
- Illegal suites may limit financing options
Documentation Lenders Want to See
If the suite is already rented, lenders often want a copy of the lease and proof of rental payments. If it is vacant, some lenders will use a market rent estimate from an appraiser instead. Either way, having clear documentation speeds up your approval process.
Renovating to Add a Suite Later
If you are buying a home without a suite but planning to add one, mortgage financing for the purchase itself will not include future income until the suite exists and is rented. Some buyers use a refinance or renovation-specific financing after closing to fund the build out once they own the property.
Insurance and Tax Considerations
Renting out part of your home affects your home insurance policy, which needs to reflect the rental use, and it also creates taxable rental income that must be reported. Speak with your insurance provider and an accountant early so you are not caught off guard at tax time or during a claim.
Frequently asked questions
- Do I need a legal secondary suite for the income to count toward my mortgage?
- Most lenders strongly prefer or require legal status, since it affects both risk and long term viability of the rental income.
- How much of the rental income can typically be used to qualify?
- This varies by lender, with some using a flat percentage of gross rent and others using a more detailed calculation, so compare a few lenders with your broker.
- Does having a secondary suite affect my property taxes?
- It can in some municipalities, so check with the city of Toronto or your local municipality about how a registered secondary suite affects your assessment.