A tenancy lease agreement would indicate kitchen exhaust filtration system to be installed in the premises as a condition of the lease. Usually, duct connection is installed in the tenancy and the owner must maintain and have full responsibility of the kitchen exhaust filtration system.
An individual tenancy filtration system maybe installed because issues may arise with residential tenancies which live above the retail precinct. The local the council who protect the local residents are becoming less tolerant of offensive smoke and odour from ventilation systems.