It depends on if you are a one-time honorable client or an honorable client with recurring appointments. When our Ninjas arrive at a one-time or move-in/out home that is going to take more than one labor hour than estimated extra to clean, we will call you and get your permission to proceed. Should this occur with a client who has scheduled regular cleaning appointments, we will give you a call after the first few months of service and let you know that your home takes longer to clean than anticipated. However, this has happened very rarely in our years of business.