A man has died in a house fire south of Chinchilla on Queensland's Western Darling Downs.

Emergency crews were called to the rural property at Hopeland just after midnight (AEST).

Acting Police Senior Sergeant Robyn Taylor-Ward says the house had been gutted by the time they arrived.

"A passing motorist had spotted the fire and called police," he said.

"When we got there, the property was well alight and was completely destroyed in the blaze.

"A search of the house found the body of a man that's believed to be the 67-year-old male resident who lived there on his own."