I assume your bank's policy is to insure at the RCV of the structure. If you make an exception for this customer and lower the required amount of coverage, I would make sure to document the exception to your policy and why the decision was made and keep that in the file. There are fair banking concerns with this, so think of long term effect....what if news of this exception spreads to loan officers or more requests start coming in to lower coverage? How will you track exceptions to ensure there is no disparate treatment?
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"It's time for the Jedi to end."
Luke Skywalker