You cannot make a blanket statement that all items in Block 1 are finance charges that affect the APR. For example, if a lender has an in-house Appraisal Dept. the cost of the appraisal charged to the borrower when an appraisal is conducted by an in-house appraiser is a block 1 item. Under Reg. Z for real estate secured transactions you exclude appraisal fees from the finance charge as long as they are reasonable and bona fide in amount.
You need to review each item that is going into block 1 and determine whether it is a finance charge under Reg. Z.
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Opinions expressed are my own and not necessarily those of my employer. They are not legal advice.