Famous Home Improvement Exemption Property Tax Illinois References. The home improvement exemption allows a homeowner to add improvements to their home that add to its value (for example, by increasing the building’s square footage, or repairing after. To receive this exemption, you must:.

This exemption defers, for four years, any increase in the assessment of your property due to an addition or other improvement to your home for which. To receive this exemption, you must:. The dollar difference between the two assessments is the amount that is exempt from taxes.