Questione giuridica chiave
Whether the land-acquisition costs for flood protection must be subsidized at full building-land value or only at non-building-land value
Decisione estratta
The subsidy cannot be limited to agricultural-land prices simply because the parcels were in a red hazard zone; the compensable value may include building-land value, subject to further deductions and adjustments.
Motivazione estratta
The protection project combined passive and active measures and used some parcels to protect a larger area and public infrastructure. This creates unequal burdens and a special sacrifice; the formal-expropriation or material-expropriation logic does not automatically exclude building-land value. However, further factors such as residual hazard, beneficiary contributions, and partial continued usability may affect the amount.