Having an appraisal done will help you in case of a flood or fire. It is also good to have it prepared in advance in case anything unforeseen happens to you suddenly and there is no one there to assist in preparing the appraisal. Having it as a part of your documents is good insurance. It also helps you to see how you compete against other practices when the time comes to sell. Upgrading or modernizing your practice may be more valuable than you realize.