Which scenario would not trigger a new three-day waiting period after delivering the Closing Disclosure?

The scenario where a seller contribution increases by $150 would not trigger a new three-day waiting period after delivering the Closing Disclosure. In mortgage lending, the regulation stipulates that changes to the terms and conditions that materially affect the borrower's obligations can lead to a requirement for re-disclosure and an additional waiting period.

An increase in the seller contribution, which is essentially a cost aspect of the transaction rather than a change in the borrowing terms or conditions, generally does not impact the borrower’s obligations to an extent that would necessitate a new waiting period. This is because seller contributions typically assist the buyer in covering closing costs rather than altering the terms of the loan itself.

In contrast, changes such as an increase in the APR on a fixed-rate loan, a change in the loan product, or the addition of a prepayment penalty directly affect the financial terms of the loan and require borrowers to be re-informed about these critical aspects, hence triggering a new waiting period.