If a tenant fails to take precautions or preventative measures to inhibit mould growth in a rental property, then they will likely responsible for remediating mould damage. This may include not allowing natural light or airflow throughout the property or failure to inform the landlord of water damage or ongoing leaks. On the other hand, if the landlord has not fulfilled their landlord obligations that has led to an inhabitable premises, then they are responsible. This may include failing to repair leaks or water damage, failure to clean the premises before a tenant moves in or a failure to repair rising damp.