Question juridique clé
Whether the administrative-law appeal was admissible against a cantonal decision based solely on cantonal expropriation law.
Solution extraite
The proper remedy was public-law appeal only insofar as constitutional rights were invoked; the administrative-law appeal was not open.
Motifs extraits
The challenged judgment applied autonomous cantonal law (Art. 7 LEspr/TI). Reference to federal expropriation law did not make the decision federal in nature, and no federal expropriation compensation issue under the federal planning law was at stake.