Question juridique clé
Whether X. and H.Y. had entered into a binding contract for promotion/pilotage of the apartment sales.
Solution extraite
Yes. The parties concluded an informal agreement under which the agency would perform the pilotage of the promotion and X. would pay a 2% commission.
Motifs extraits
No written contract was needed; the lower court could infer assent from X.'s repeated visits to the agency, his references to the promised pilotage commission, and his encouragement of the promotion. The Federal Tribunal found no arbitrariness in this factual assessment.