Question juridique clé
Whether the evidence sufficiently proved the subcontracted works and their completion for a definitive construction lien
Solution extraite
The contractor did not prove with sufficient clarity what works it had promised or performed; the cantonal court could reject the claim without arbitrariness.
Motifs extraits
The contract was too vague, the invoice did not specify the works, and the documents did not clearly link the alleged annex and the completed works to the contractor's obligations. The assessment was not arbitrary under Article 9 of the Constitution.