Article 245. Determination of the share of the right to share property

1. If the shares of the participants in the equity property cannot be determined by law and are not established by agreement of all the parties thereto, the shares shall be considered equal. 3. A member of the joint ownership may determine and change their shares according to the contribution of each of them to the education and promotion of common property. Having made, at its own expense and in accordance with established procedures for the use of common property, an indispensible improvement in that property is entitled to an appropriate increase in its share of the right to the enjoyment of the right to the enjoyment of the highest attainable standard of physical and mental health. Separated improvements in common property, unless otherwise provided for by the agreement of the parties to the joint property, shall be made to the property of the party that made the property.