41 C.F.R. § 302-15.6

When an employee has been authorized to receive property management services for a transfer within CONUS, from CONUS to an OCONUS non-foreign area, or from an OCONUS non-foreign area to CONUS, the employee may change their selection from receiving property management expenses to selling their residence at Government expense provided:

(a) Their agency allows them to change their election of payment from property management expenses to the sale of the residence at Government expense; and

(b) Payment for sale of the residence at Government expense is offset in accordance with the agency's policy established under § 302-15.70(d) and (e).