Key legal question
Whether the attached site plan had to be notarized as part of the precontract for the land sale.
Extracted holding
Yes. A plan attached to a precontract and used to define the property sold must be covered by the notary's signature and therefore be notarized.
Extracted reasoning
Under Art. 216(2) OR and the cantonal rules, everything that must be authenticated must be covered by the notary's signature. The site plan defined the sale object and was not notarized; the exception for mutation plans did not apply.