The provisions of this chapter apply to the renewal or sale of existing leaseholds on railroad rights of way, and to existing leaseholds on lands that have ceased to be used for railroad rights of way after the leasehold was first created, and so long thereafter as the lease site remains under the ownership or control of the railroad or an entity that was or is under common ownership or control of the railroad. The value of a leaseholder’s improvements may not be considered in determining annual rental or the gross sum for the right, privilege, and easement sought.