East Sussex Fire and Rescue Service were called at 8.11pm on 4 November to reports of a fire at a caravan park on Marine Parade in Seaford.
Three caravans and a car were involved, along with 5 gas cylinders.
Three fire engines were sent to the scene.
Crews used 6 breathing apparatus, 3 main jets, firefighting foam and a hose reel jet.
As of 21.30 firefighters were damping down the scene to ensure the fire is out.
The cause has not been confirmed.