I.-A.- Buildings and land used to carry out an activity involving the manufacture or transformation of movable tangible property that requires significant technical resources are considered to be industrial in nature.
Buildings and land used for activities other than those mentioned in the first paragraph of this A that require significant technical resources, where the technical installations, equipment and tools used play a predominant role, are also considered to be industrial in nature.
B.-1. However, in the two cases mentioned in A, when the value of the technical installations, equipment and tools present in the buildings or on the land and intended for the activity does not exceed €500,000, these buildings and land do not have an industrial character.
An increase in the threshold is taken into account when this amount is exceeded during the three years preceding the year in respect of which the tax is assessed.
Downward crossing of the threshold is taken into account when this amount is not exceeded during the three years preceding the year in respect of which the tax is assessed.
By way of exception, in the case of new construction or the commencement of business, if the threshold is exceeded in the year following the year of new construction or the commencement of business, the amount is taken into account from the year following the year in which the threshold is exceeded.
2. For the purposes of assessing the threshold provided for in 1, the original value of the technical installations, equipment and tools held by the operator or owner or made available to him, whether in return for payment or free of charge, for a total period of at least six months during the calendar year preceding that in respect of which the tax is levied or, in the event of the end of a financial year equal to twelve months during that same year, during that financial year, is taken into account.
C.-B applies to buildings and land used for an activity falling within the scope of the business property tax defined in article 1447.
D.-If the threshold defined in B is crossed, the operator shall inform the owner, if different, by 1 February of the year in which the threshold is crossed.
II.-Industrial buildings and land are valued:
1° according to the rules set out in article 1499 when they appear as assets on the balance sheet of their owner or operator, and the latter is subject to the obligations defined in article 53 A ;
2° According to the rules set out in article 1499, when they appear on the assets side of the balance sheet of a business whose main activity is the rental of these industrial assets ;
3° According to the rules set out in Article 1498, when the conditions set out in 1° and 2° of this Article are not met or when the provisions of Article 1499-00 A are applicable.