Institutional portal - Municipality of Milan

It depends, we must not confuse monetization or the adjustment of the provision of services (charge that is applied to changes in intended use) with the construction contribution (which applies in the case of building renovation qualification).

Let's get into the details and illustrate the four most recurring cases:
1) change of intended use with qualification of conservative restoration:
For changes in intended use, only monetization is due pursuant to the art. 11 of the PGT Service Plan, except in the case described in point 3.
2) change of intended use qualifying as building renovation:
in addition to monetization, the construction contribution must also be calculated, consisting of both the urbanization costs ("new construction costs reduced by 60%"), as well as the contribution commensurate with the construction cost.
3) update of the construction contribution in case of change of intended use with qualification of conservative restoration or simple change of intended use without works in the 10 years from the conclusion of a costly intervention:
Within 10 years from the date of completion of works on a onerous title referring to the same property, the construction contribution must be updated by checking whether the new intended use is more onerous than the original\existing one; in this case you will have to pay the difference.

E.g.: In the case of a change of use from Residential to Tertiary in the NAF the relevant amounts for the two destinations are:
Primary Residence: €19,98/m19,98 = 3 x 59,94 (virtual h) = €XNUMX/mXNUMX of SL
Primary Tertiary: €193,97/mXNUMX SL
The difference between the value of the final destination and the value of the initial destination must be calculated:
193,97 – 59,94 = €134,03/mXNUMX SL
If the result is positive I will have to pay the difference, but if the result is negative (e.g. in the event of a change from Tertiary to Residence) nothing is due.
The aforementioned verification must be carried out both for the primary and secondary urbanization costs and for the contribution commensurate with the construction cost. 

FAQ SUE n. 33 - Published on 6 March 2020