Key legal question
Whether the cantonal court violated municipal autonomy by annulling approval of the AP-EP 1a and sidewalk-widening constraints on parcel ZZZ due to an insufficient implementation program.
Extracted holding
No. The cantonal court could require a sufficiently substantiated implementation program, including costs, financing, and sequencing, without usurping the municipality’s planning discretion.
Extracted reasoning
The Federal Court held that Art. 26 and 30 LALPT require the realisation program to show costs, financing, order of works, and coordination. Given the scale of the investment and the program’s gaps, the cantonal court could find the program insufficient without arbitrariness or violation of municipal autonomy.