Original appearance and consistency of architectural elements of the building. In horizontal co-ownerships, the declaration of co-ownership (by-laws of the immovable) generally prohibits the co-owners from any aesthetic or other modification likely to break the architectural harmony of the building or to affect the uniformity of the facades. The characteristics and location of the immovable may, as well as the destination of the immovable, serve as justification for this type of restriction. Sometimes, this harmony is ensured under the terms of a servitude included in the declaration of co-ownership.