Answer a few questions about the damp patches, mould and smells in your home and get the most likely cause — condensation, penetrating damp, rising damp or a leak — with the practical fixes and when to call a professional.

Renter? Condensation is usually your responsibility, but leaks and structural damp are the landlord's to fix — report it in writing and keep photos. Landlords must keep homes free of damp and mould (Awaab's Law is tightening the timescales).