A rental Warrant of Fitness is set to be introduced next year. And it's just been announced that The University of Otago, Wellington, is working with Wellington and Dunedin City Councils to study the effects of introducing the measure. It's funded by the Health Research Council of New Zealand. And would require basic standards for things like ventilation, heating, safety and hygiene in a rental property. Dr Lucy Telfar Barnard is from the Department of Public Health, University of Otago, Wellington.