Section 27 of the Public Lands Law provides that the Commissioner of General Services with the approval of the Director of the Budget shall establish and may amend rules and regulations authorizing the payment of reasonable and necessary moving expenses, actual direct losses, certain actual expenses, supplemental relocation payments, loss of favorable mortgage financing and closing costs to occupants of property acquired pursuant to such law. The rules and regulations set forth in this Part shall apply to moving expenses, supplemental relocation payments, loss of favorable mortgage financing and closing costs to eligible persons caused by their displacement from real property acquired pursuant to such law.