Is black bathroom mold the tenant's or landlord's responsibility?« Back to Previous Page

This is a common dispute in Dubai rentals, and the answer depends on the source of the moisture. The black substance is likely Cladosporium or Aspergillus mold, which thrives on the organic residue in soap scum and dust, fueled by humidity.

Legally, the landlord is responsible for fixing the underlying cause if it's a structural or maintenance issue, such as faulty waterproofing behind the tiles, leaking pipes within the walls, or a defective exhaust fan that doesn't meet Dubai ventilation standards. If the building's high humidity is the root cause due to poor construction or a central AC issue, that also falls on the owner.

However, the tenant is typically responsible for damage resulting from daily living without adequate mitigation. Simply running a fan may not be enough in a Marina apartment, where humidity is high year-round. The legal requirement is often to demonstrate "due diligence." Document that you run the exhaust fan for at least 30 minutes after showering, regularly wipe down wet surfaces, and use a dehumidifier if possible.

Since wiping it away isn't working and the smell is strong, the moisture is likely coming from within the wall. This moves it beyond simple cleaning. Your best course is to formally request in writing that the landlord investigate for a leak or waterproofing failure. A professional inspection with moisture meters can identify the source. If the landlord refuses to address a concealed leak, you can escalate the matter to the Rental Dispute Center (RDC) in Dubai, as a landlord is obligated to provide a habitable property free of dampness that causes mold.