I'm buying to live there and house my family and I get no exemption because the moment I declare the renovation it triggers a revaluation by the tax and income state department. And I should not get it. It is a property and it has intrinsic value. Deductions should apply if by some reason a person can't pay the taxes - unemployment, sickness, low income - but never an exemption. Even less if we're talking in flipping houses, where renovations can push up the value to ludicrous levels. Never. Ever. It's unfair.