The tax base for property tax on built-up properties for assets that are the subject of a transfer of ownership from the State to the major maritime and river-maritime ports pursuant to Article L. 5312-16 of the French Transport Code is subject to a degressive reduction.
This reduction applies for the five years following the year in which the transfer of ownership was published in the real estate register. Its rate is set at 100% for the first two years, 75% for the third year, 50% for the fourth year and 25% for the fifth year.
It ceases to apply if the taxpayer changes during this period.