Key legal question
Whether the use of an open procurement procedure was unlawful
Extracted holding
The open procedure was lawful because the revised estimate for the works was CHF 584,259.25, above the applicable threshold for construction works.
Extracted reasoning
For choosing the procedure, the contracting authority must assess the total value ex ante; a higher-level procedure may also be used even if not strictly required. The estimated contract value placed the project within the range where an open procedure is mandatory.