Short answer
Changing all or part of a home from personal use to income-producing use can create a deemed disposition at fair market value. Elections may be available in some cases, but they have conditions and tax consequences.
Why this question matters
A homeowner moves out and rents the property, believing nothing must be recorded until the eventual sale. Years later, the original value and use-change evidence are difficult to reconstruct.
What the official rule or guidance says
CRA describes change-in-use rules that can treat a property as disposed of and immediately reacquired at fair market value. The Income Tax Act provides possible elections in qualifying situations, including rules that interact with capital cost allowance and principal-residence designation.
What this does not mean
A market appraisal does not itself choose the tax treatment, and a mortgage refinance does not reset the tax cost. Provincial tenancy, insurance, municipal and lender-occupancy requirements remain separate.
A practical Ontario example
Illustration only: An owner converts a former home into a long-term rental after buying another residence. A contemporaneous appraisal may help document fair market value, but an accountant must advise whether an election is suitable and which home can be designated for each year.
Practical next steps
Speak with an accountant before the conversion, obtain defensible value evidence and review whether claiming depreciation could affect an election. Tell the insurer and mortgage lender about the occupancy change and confirm the rental cash flow under the lender’s current policy.
Questions to ask before relying on the answer
- Is this an insurer, tax, legal, regulator or individual lender rule?
- Does it apply to an insured, insurable or uninsurable mortgage?
- How will the lender document and calculate the rent on this exact property?
- Which facts are confirmed, and which are still assumptions?
- What is the lowest-cost workable path through A, alternative/B, MIC or private lending?
Rajiv’s broker perspective
Rental files should be tested, not guessed. I would separate the legal and tax questions from the mortgage calculation, prepare one clean property schedule and then compare suitable lender policies. A strong result is not simply the largest approval—it is a mortgage the client can carry through vacancy, repairs, renewal and a realistic exit.
Related: Mortgage Knowledge Centre · Real Estate Centre · Updates & Rules Centre
Want the rental file tested before you make a decision?
Bring the property numbers, current mortgages and income documents. Rajiv can compare the practical A, alternative/B, MIC and private paths and identify which questions need an accountant or lawyer.