Beyond the mortgage, an owner bears maintenance, building insurance, the supplementary property tax and, if they live in the home, the imputed rental value added to their taxable income (until the end of 2028). With condominium ownership (PPE), co-ownership charges come on top. In practice, allow around 1 % of the property's value per year, all in. Our advice to owners keeping their property: maintenance works (those that preserve value, as opposed to value-adding works) are currently deductible from taxable income, and this deduction will disappear along with the imputed rental value at the end of 2028. Until then, a tax window is open: plan your renovations now.