Your landlord can ask that tour operators not park buses on the property that you are renting but unless the presumed written commercial lease that you have states that such buses cannot be parked on the rented premises the landlord cannot legally enforce his or her desires that the buses not be parked where they park.As such, you need to carefully read the written lease that you most likely have for the premises you occupy in that the answer to your question will most likely be in the document.