If the attorney works for the bank, block 1.
If the attorney is an independent third party that your bank hires to do things like this, I'd say Block 3.
I would have to opine that in both these cases the attorney is performing origination services on behalf of the financial institution and the fee would be a Block 1 and Line 801 charge. See Q&A #9 on page 28 of the 4/2/10 RESPA FAQs.
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The opinions expressed are mine and they are not to be taken as legal advice.