Once a tenant moves in to their new rental property, it’s their responsibility to keep it in a clean and tidy condition. This includes keeping the home in a condition that doesn’t encourage the build – up of mould as well as removing any mould as soon as it appears. However, landlords should provide adequate ventilation for the property as an additional preventative measure. There are a lot of great tools to reduce the build – up of mould and condensation such as bathroom fans, secure window stays and dehumidifiers . Clarke Group Property Management recommends that tenants use all of these methods if available, and for tenants to keep the property well aired and ventilated.