UPDATE 2:30PM: A young boy has died in hospital after suffering horrific burns in a house fire last night.
A spokesman for the Lady Cilento Children's Hospital this afternoon confirmed a boy, 4, had died.
Another boy, 3, believed to be his brother, remains in a critical condition in the Lady Cilento Children's Hospital.
UPDATE 1.15PM: Emergency services struggled to find the Weranga house where a dad and his two sons were seriously injured in a fire, according to a neighbour.
The fire last night has left all three in critical conditions in Brisbane hospitals, and the two boys, aged three and four, have burns to roughly 90 per cent of their bodies.
Donna Marie Dick lives across the road from the property and said the emergency services struggled to identify the house which was on fire, some driving past it at least twice.
"They (fire services) just sort of drove up the road and a couple of them sort of went around the cul-de-sac and then they came back down past my house and then down (the street)," Ms Dick said.
"So I pulled in at the driveway to show (my) torch and then they came back up and I just pointed to where the actual lot was and premises where the fire was."
The building on fire was roughly 500 metres away from the road, and was shielded from clear sight by a pair of buildings at the front of the property, as well as trees.
Ms Dick said more needed to be done by authorities to make sure all properties could be quickly identified.
"I think they (emergency services) need to work something out with (the) council with these yellow poles so that the emergency services know where they're actually going to; instead of trying to find lot numbers" she said.
"It could have just maybe saved a bit of time from going up around the cul-de-sac and coming down to me and then me explaining where the actual house was."
Western Downs Regional Council Mayor, Paul McVeigh said the yellow poles at the front of properties were not a council issue but it was something he would look into.
"The rural property numbers were done by councils prior to amalgamation and were given to any property which had a dwelling," Cr McVeigh said.
"One thing we (the council) have talked about this morning was on how we can improve the efficiency of our emergency services getting to these properties."
Cr McVeigh said when he heard news of the fire this morning it, "knocked me around".
He also said if any rural properties did not have a rural property number outside of their land, he would encourage them to be in contact with council.
Emergency services are at the scene and are continuing their investigation into the fire.
EARLIER, 8AM: A dad and two young children have been airlifted to hospital in a critical condition after their home was destroyed by fire overnight.
The children are understood to be aged three and four.
The property was engulfed in flames when police arrived at the Weranga property, west of Dalby, at 8pm on Tuesday.
The three were able to escape the house but all received serious burns.
The house was completely destroyed in the fire.
Queensland Fire and Emergency Rescue spokesman Cameron Ashmore told ABC News how paramedics worked to save the little boys.
"The two children, aged three and four, suffered 89 to 90% burns to their whole body and the father suffered burns to his arms," he said.
The boys are in Lady Cilento Children's Hospital. The father is at the Royal Brisbane and Women's Hospital.
All three remain in a critical condition.
Investigations are continuing.