Yes, you can still deduct this expense, if it is eligible. 

You may be eligible if, at the end of the tax year:

• You lived in Ontario, and
• You paid eligible expenses during the year to improve your principal residence, and
• One of the following applies:
  • You were aged 65 or older, or 
  • You lived with a senior relative, or
  • You will live with a senior relative within 24 months

For more information, please see this TurboTax FAQ: How do I claim the Ontario Seniors' Home Safety Tax Credit?

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