我業主話我交還單位時幅牆發霉，要我俾錢佢油番幅牆，仲話係我責任。我想問住客真係有責任清潔佢間屋？有法律規定嗎？

1. Yes.

2. Yes.

Regardless written in the lease or not, a tenant has an implied responsibility of proper maintenance of the premise subject to the lease.

However, in this case, the question is not about proper maintenance. Instead, it is about causing damages to the property.

The central question is - what caused the mold? Since the mold can grow despite proper maintenance, the remaining issue is if the landlord can prove your responsibility or not. If so, you will be liable.

Otherwise, you are not.

是否需要清潔視乎「租約」有沒有規定，並沒有法律規定必須清潔。

發毛係天然，你同佢講，人係會死的