From 1026.37:
(f) Closing cost details; loan costs. Under the master heading “Closing Cost Details,†in a table under the heading “Loan Costs,†all loan costs associated with the transaction. . . .
IMO the attorney fee is specific to the DPA loan and is not a charge associated with the first lien transaction therefore you would not be allowed to charge it to that transaction.
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The opinions expressed are mine and they are not to be taken as legal advice.