A cohort of 233 residential properties with recently remediated mould issues were investigated to understand remediation methods employed and identify factors contributing to mould growth. The root cause and success of remediation was explored for a subset of 30 of the properties. The study showed that remediation without sufficiently addressing the root cause of mould issues is not effective in preventing mould growth from reoccurring in the short term. Subsequently, indoor environmental conditions were monitored for five (5) of these properties over the course of a year, to identify contributing factors to mould growth. Humidity levels in all properties were elevated, with mould affected properties experiencing bedroom humidity levels above 80% for between 7% and 45% of the time. These conditions were evaluated against mould risk indicators in various Standards/guidelines, however none of these indicators were able to reliably predict the risk of mould occurrence in the specific cohort of our study.