I. – Recipients of the allocation de solidarité aux personnes âgées mentioned in Article L. 815-1 of the Social Security Code or the allocation supplémentaire d’invalidité mentioned in article L. 815-24 of the same code are exempt from the property tax on built-up properties for which they are liable in respect of their main home.
II. – Taxpayers who no longer benefit from the exemption provided for in I :
1° Are exempt from the property tax on built properties relating to their principal dwelling in the first and second years following the year in respect of which they last benefited from the exemption provided for in I ;
2° Benefit, for the calculation of the property tax on built-up properties relating to their main home, from a reduction in the rental value of two-thirds in the third year and one-third in the fourth year following the year in respect of which they benefited from the exemption provided for in I for the last time.