Kernrechtsfrage
Whether the Aargau Assessment Commission under the Building Act qualifies as an upper court for purposes of direct federal appeal under Art. 86(2) BGG.
Extrahierter Entscheid
It does not qualify, because it is hierarchically subordinate within the cantonal judicial system since Building Act expropriation cases can still be appealed to the Administrative Court.
Extrahierte Begründung
An upper court must be competent for the whole canton and not be subject to a higher cantonal instance in any of its areas of jurisdiction. The commission's mixed appellate structure means it is not hierarchically independent.