Questione giuridica chiave
Whether the municipal levy in the planning-zone building permit had a sufficient statutory basis.
Decisione estratta
No. The planning-zone rules authorized only a building freeze and negative pre-effect, not a public levy; the levy lacked a formal legal basis meeting tax-law requirements.
Motivazione estratta
The relevant cantonal and municipal provisions regulated planning zones only. A levy requires a formal-law basis defining taxpayers, object, and assessment. The planning-zone ordinance exceeded this framework.