Each syndicate of co-owners has a declaration of co-ownership, which, in principle, should be a veritable bedside book for both the co-owners and the members of the board of directors. However, the declaration of co-ownership is a document that may seem inaccessible at first glance for the latter. This problem can sometimes be increased, when it was more or less well written, more or less long ago. This is not to mention the confusing clauses, which create difficulties of interpretation and even clauses contrary to the legislation that evolved after its publication.
The characteristic of divided co-ownership is to divide the building into various lots that will be the exclusive property of the co-owners (private portions), and for others that will be the property of all the co-owners (common portions). These lots are identified by an individual number, which was assigned during the cadastral operation. Each of the private lots of the co-ownership thus constituted becomes a unique property. The distinction between the common and private portions is essential, particularly from the point of view of maintenance, which is the responsibility of the syndicate of co-owners for the common portions and of the co-owners for the private portions.