①Where a condominium unit is newly constructed adjoining a building (excluding a condominium unit) for which a heading registration is made and they constitute a single building, and this has caused the building for which a heading registration is made to become a condominium unit, an application for a registration of change of the heading section relating to the building for which a heading registration is made must be filed along with an application for a heading registration relating to the newly constructed condominium unit.

②In the case referred to in the preceding paragraph, the heading-section owner or registered holder of ownership of the building for which a heading registration is made may file an application for a heading registration relating to the newly constructed condominium unit on behalf of the owner of the newly constructed condominium unit.

③When all of the two or more buildings (excluding condominium units) for which a heading registration is made have become condominium units mutually adjoining as a result of an extension or any other constructions, applications for registrations of change of the heading section relating to the two or more buildings for which a heading registration is made must be filed at one time.

④In the case referred to in the preceding paragraph, the heading-section owner or registered holder of ownership of any one of those two or more buildings for which a heading registration is made may file an application for registration of the heading section relating to other buildings for which a heading registration is made, on behalf of the heading-section owners or registered holders of ownership of the other buildings the heading registration is made or their heirs or other general successors.