The objective of ‘Toxic mould in a commercial premises’ situation is to make the area safe for occupation asap. Consequently, identifying the source of the problem and providing a remediation plan are the key factors which need to be addressed. Occupational safety should be assessed by a trained and qualified professional and a recommended health and safety plan established to determine relocation or even evacuation in certain cases. The latter can be expensive and disruptive so we have decontamination options which can provide an immediate safety window which buys time to create a longer-term plan and solution. This process can involve air quality monitoring to ensure ongoing occupational safety during the remediation process.