Indoor air quality (IAQ) is a growing concern in Hong Kong. A territory-wide IAQ monitoring programme is essential for safeguarding public health. Currently, the IAQ Certification Scheme is ineffective while the development progress of IAQ policy is relatively slow. This seminar reports the feasibility of implementing an IAQ index in Hong Kong for IAQ control and proposes a step-wise IAQ screening protocol to facilitate cost-effective IAQ management among building owners and managers. The IAQ indices proposed include: a) an IAQ Health Index (IAQHI) and b) an IAQ Index with Surrogate Indicators (IAQSI). It is suggested that an up-to-date IAQ index for Hong Kong should be maintained, and a regional IAQ screening programme should also be put forward.