Multiple structures have been damaged in a fire at a property at Purnong Road in Mannum, on the Murray River.
When CFS crews arrived, the fire had completely engulfed the house and extended to other structures, including a transportable building, shed, motorhome and several trailers.
The estimated damage amount is $800,000.
Firefighters managed to stop the blaze from extending to a car and carport.
Residents were not home when the fire started.
Several battery storage units and solar panels were found on the property. Hazardous Material specialists have investigated and put precautions in place.
Police are investigating the cause.