Five residents escaped unharmed after a two-storey semi-permanent house caught fire near Dewan Dayak Baru in Bau on Friday afternoon. The Sarawak Fire and Rescue Department (BOMBA) said it received the alert at 12.49pm and firefighters from Bau station arrived five minutes later. The fire involved the upper floor and destroyed about 70 per cent of the structure. Firefighters brought the flames under control by 1.15pm and completed safety checks before ending operations at 1.46pm. All five occupants were safe and no injuries were reported. BOMBA said the cause of the fire and estimated losses are still under investigation. Residents near the affected area should keep away from smoke, unstable structures and emergency operations. The cause, total loss and final clearance should be treated as pending until the responding authority confirms them.