In my experience, most of the AMCs actually don't know. They know what their Lender/Client has told them. The Lender/Client knows what their borrower told them. Some of them may actually look at the property card or the MLS listing but, with few exceptions, no one is doing much research about the subject property until the appraiser starts. And why should they? It isn't the AMC's or the Lender's business to make life easier for appraisers. We sell a service. They buy that service. If you sell your service too cheaply, that's all you.