The rental of real estate is often referred to as a rental agreement and usually includes certain ownership rights over real estate, unlike real estate. Download the rental agreement at the bottom. Download the boardinghouse lease below. If he does not practice the express option, defined by law or by the treaty, the contract remains in force and the civil court is legally entitled to assess the actual use of the property as well as the implicit conscience and tolerance of the owner (in the absence of measures of solution in relation to the contract). Suddenly, the judge has the right to determine the new contractual agreement and to bring its clauses into line with the actual purpose of the use of the property. .