(a) If an employee qualifies for a residence transaction expense allowance, they may be reimbursed for the:

1. (1) Expenses of selling the old residence and purchasing a new residence in the United States; or
2. (2) Settlement of an unexpired lease at the old official station in the United States from which transferred to another official station in the United States or when assigned to a foreign post of duty; and
3. (3) Expenses of purchasing a new residence in the United States upon return to the United States upon completion of the foreign tour of duty and the return is to a different official station, and is 50 miles distance from the official station which the employee transferred from.