Such measures and their costs can be deducted from taxable income as federal taxes or as property maintenance, provided they are included or reported on your tax return. The measures in question include, for example, insulation, the installation of heat pumps or solar panels, and the costs associated with demolishing an existing structure to build a more energy-efficient new one also fall into this category. If in doubt, you can also have your tax return prepared by a professional if you’re unsure.

Expenses for routine maintenance are deductible only in the year they are incurred, whereas the deduction period for energy-saving renovations can extend up to three years. However, the full amount is deductible only if it was not already fully claimed in the year the work was performed. Here, too, it is advisable to have a professional prepare your tax return if you are unsure.