Kernrechtsfrage
Whether the federal appeal was admissible against a cantonal decision based on cantonally autonomous expropriation law
Extrahierter Entscheid
The challenged judgment was based exclusively on cantonal law, so only the constitutional complaint route was available, not the administrative-law appeal.
Extrahierte Begründung
Article 7 LEspr/TI governs waiver of expropriation as cantonal autonomous law; the parallel federal expropriation statute does not make the decision federal law-based. A federal-law argument used only as supplementary cantonal law remains cantonal.