If you have a disability and have made disability-related renovations to your home, you could qualify for the Home Accessibility Tax Credit.

If you were a first-time home buyer three years ago, you may have been eligible for the Home Buyers' Amount. If you were eligible and didn't claim this amount, you can apply for an adjustment to your return to add the credit.

https://turbotax.community.intuit.ca/replies/2647992