Question juridique clé
Whether the 1986 reserve-zone designation was RPG-compliant and thus whether the 2003 re-zoning counted as a compensable re-zoning/expropriation
Solution extraite
The 1986 inclusion in the reserve zone was not RPG-compliant; the land was only brought into a federal-law-compliant building zone by the 2003 zoning plan.
Motifs extraits
Thurgau reserve zones under the former law required a real transfer into the definitive building zone; they were not themselves building zones under Art. 15 RPG. Later cantonal amendments did not automatically turn them into definitive building land without the required review/procedure.