A townhouse was destroyed by fire while another was saved after a blaze in Claymore at the weekend.
Fire and Rescue NSW crews were called to Allport Way shortly after 2am on Saturday, September 25 to find a townhouse well alight.
Macarthur region Fire and Rescue NSW Superintendent Wayne Schweickle said crews worked hard to fully extinguish the flames within 40 minutes.
"The first was fully involved, it was raging when they arrived," he said.
"Firefighters were able to completely save the neighbouring property - they did an excellent job of preventing the spread.
"There was a small amount of smoke penetration and a little bit of water damage."
Superintendent Schweickle said the premises which burned down was unoccupied and "derelict".
The neighbouring property was home to one occupant, who self-evacuated and was not injured.
Superintendent Schweickle said police would be investigating the cause of the blaze.
"The premises which was burning did not have any power connected at the time of the fire," he said.
"There will be investigations into the cause of the fire."
Cause and origin, premisis that was burning, no power connected at the time of fire, investigations into the cause of the fire
Fire and Rescue crews remained on scene after the fire was extinguished to conduct salvage and overhaul works.