The grim discovery was made by a group of four teenagers who wondered onto the property after finding the gate open.
The victim has been identified by the Guardia Civil as Pedro Pablo B A, a man in his mid forties and the owner of the property.
He reportedly rented rooms out on the farm and had recently had two young men staying who helped with maintainance at the sizeable property on the outskirts of Sot de Chera, a town in the Valencia region.
A statement from the Guardia Civil said the body was in an “advanced state of decomposition” and that the man was “tied at his wrists and ankles, had a plastic bag over his head and was weighted down with a bag of stones”.
They are awaiting the results of a post mortem.