The only problem I see with that is what if the RCV is the "lesser of" and your borrower brings you a policy for say 60,000.00, but all of your records would lead the bank bank to a calculated RCV of 75,000.00. So now you have a disputed RCV amount. Who's right? If the bank is right, your borrower now has to go back and get more insurance. To me, it's a much easier pill to swallow if you make the purchase of flood insurance as easy and straightforward as possible. Tell them how much insurance you want from the get go. Then you only have to argue with them about it once.
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I can't herd the cats anymore, so I just set up the electric fences and let them fry when they stray out of bounds.