economic rent

noun

1. the return on a productive resource, as land or labor, that is greater than the amount necessary to keep the resource producing or on a product in excess of what would have been the return except for some unique factor.

noun

1. economics a payment to a factor of production (land, labour, or capital) in excess of that needed to keep it in its present use
2. (in Britain) the rent of a dwelling based on recouping the costs of providing it plus a profit sufficient to motivate the landlord to let it