I would get a signed affidavit from your landlord as well as a copy of your lease, past car registration slips with your name/address, your auto insurance policy, license, phone bills, internet bills, bank statements with your address, anything that would prove you regularly live in Canada. Do you donate blood? Volunteer? Part of an organization like YMCA or a religious congregation? Anywhere that may have record of you being there somewhat regularly.
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I think this is really useful advice from AmericanWife. I was a PR for a long time before applying for citizenship, and I was a stay at home parent for all of that time.
I had an interview with IRCC and the agent ended up asking me to fill out the CIT 520E form, which is the abridged version of the residency questionnaire. They wanted the kind of information AmericanWife is referring to. If you have credit card statements, highlight purchases made at stores in your neighborhood, especially for things like groceries.
They accepted my documentation, and I got my citizenship this past December. It was some extra effort, but my application was only delayed by a few months in the end. I wish I had been gathering that info in advance though- it would have saved a lot of rushing around.