I guess the bottom line is: is this work done to restore to what the house had before, or it is an upgrade? E.g. you had carpet before and changed/replaced to new carpet, then it's total deduction for the year; but if you upgraded it to hardwood floor (not food haha), you will need to go through CCA (capital cost allowance). As to how much to deduct CCA, check the CRA guide with categories of different pertentages (e.g. appliances are at 20%).