Jersey Fire and Rescue crews attended the scene of the fire in fields near to Grainville School at around 2pm.
The States of Jersey Police is now carrying out investigations into the cause of the fire. No one was injured.
A statement from the Jersey Fire and Rescue Service said: ‘A remotely located outbuilding has been destroyed by fire. Firefighters from Blue Watch attended the incident at 13:57.
‘The police are carrying out investigations into the cause of the fire.
‘Thankfully no one was injured and the fire was extinguished quickly once access to the location was made.’
