Key legal question
Whether the January 12, 2009 agreement was a sales contract, precontract, or mandate
Extracted holding
The agreement was a mandate of representation; the separate promise to sell land was a unilateral engagement akin to an option and was void for lack of authentic form.
Extracted reasoning
No reciprocal sales obligation existed. The company only undertook to seek permits and market the project. Because the land remained with the heirs, they needed representation before authorities; the mandate was valid without form.