EMERGENCY services responding to a house fire in Yangebup have discovered a large hydroponic set-up in at least six rooms of the house, along with cannabis plants.

Police were called to the Dugong View home just after 6am to help manage traffic while firefighters dealt with the fire.

However, firefighters discovered the electricity supply to the house had been illegally modified and after the fire was extinguished around 7.30am police found the hydroponic equipment.

Police say the extent of items in the house has not been established due to the amount of damage caused by the fire and there had so far been only limited access to the property.

Damage to the house is believed to be around $250,000.

Detective Senior Sergeant Paul Matthews from the Organised Crime Squad encouraged people to report any suspicious activity at houses where there could be illegal activity such drug cultivation.

“In addition to the illicit drugs being produced, the illegal modification to electricity supply systems create a dangerous environment for neighbours, particularly when their power supplies have been interfered with,” he said.

“In one recent example, a neighbour who had their electricity supply interfered with experienced minor electrical sensations while using a shower and then again when checking their meter box.

“The modification of electrical supply to a house is extremely dangerous and puts innocent people in direct risk of harm.”