If your appeal involves commercial or industrial property, you may use all three approaches to value. You may want to consult a real estate appraiser or a lawyer to help you prepare your case. When sufficient data is available, the sales comparison approach and the income capitalization approach will be given more weight in most commercial and industrial appeals. Your income capitalization approach should be based upon market conditions--typical market income and expenses. Income and expenses of the property under appeal may also be used. Income, expenses, and capitalization rates must be verifiable and supported. You should provide a copy of your income and expense statement and all leases pertinent to the property. If the income or expenses of the property under appeal vary from typical market income and expenses, you must show why such variations are reasonable or typical for the property.