Your responsibility typically covers routine maintenance like changing AC filters to prevent internal unit mold. However, the mold growth on the wall itself, particularly if it is causing health symptoms, is a strong indicator of a moisture problem originating from the building’s structure. Document everything: take clear photos of the mold and the damp wall, note the dates you first noticed it, and keep a record of your children’s symptoms and any communication with the landlord.

Formally notify your landlord in writing about the issue, stating it is affecting your family’s health and request they investigate and rectify the source of the moisture. If they are unresponsive, you can file a complaint with the Rental Disputes Center (RDC) in Dubai. For immediate health concerns and to properly identify the mold type, a professional indoor environmental assessment with lab analysis is advised to confirm the extent of the issue and its cause.