The Federal Supreme Court dismisses the appeal against the Lausanne building permit.
Forest boundary
No new determination of the forest boundary is made because the factual circumstances have not changed substantially since 2006.
Built heritage site
The assessment of the project's integration in the ISOS perimeter is not considered arbitrary.
Costs
The appellants are ordered to pay court costs of 4'000 francs as well as party compensation of 4'000 francs.
Source
Federal Supreme Court, judgment 1C_518/2025 of 14 August 2026, published on 10 September 2026.