The phenomenon of multi-class construction and landlords has increased in Iraq, and this is not justified except because of the change in the economic and social conditions in it, because like any social system interacts with what happens in society, whether it is positive or negative, and since the vertical housing system contains common parts and these parts need to Maintenance and preservation, and in order to continue to perform the construction and other parts in an effective and regular manner for a long period of time and with appropriate efficiency, it must be maintained, and maintenance is one of the most important and difficult problems facing the partners. It is recognized that it is not possible to understand these practical difficulties that arise among the owners as a result of the combination of individual and joint ownerships in one property, and since the sources of problems are diverse, so it is not possible to enumerate them in advance, because it may result from the use and utilization of the common parts, or in connection with their preservation, cleaning and maintenance, or in connection with The distribution of the common burdens between the owners of disputes and disputes, so the legislators were keen to have provisions that would ensure reconciling the conflicting interests.