It depends. First, your lease agreement should address mold complaint situations. Next, mold can be a serious problem, so not assessing a mold complaint can impose liability on you if mold is in fact present. If mold is visible, you should take steps to assess the condition. If the tenant was not the cause of the mold, and the report reveals dangerous types and levels of mold, you should remedy the problem. If mold is not visible and your lease agreement does not address the situation, this poses a problem. If you do not assess the condition, and the tenant gets injured by mold, you could be held liable. But if you assess the condition, and there is no mold present, you’ve spent hundreds of dollars needlessly. Again, use a lease agreement that addresses this situation, and if necessary, consult an attorney to help guide you through mold complaints.