41 C.F.R. § 302-10.1
Reimbursement for transporting a mobile home instead of an HHG shipment
(a) When employees are eligible for the transportation of HHG, they will be reimbursed for transporting a mobile home instead of an HHG shipment, not to exceed what the Government would incur for the transportation of the HHG and 90-days temporary storage.
(b) Agencies may assume direct responsibility for the costs of preparing and transporting the mobile home if it is determined to be in the Government's interest.