UPDATE 2.25: A spokesman from Brisbane's Lady Cilento Hospital has confirmed the four-year-old boy in last night's Weranga House fire has passed away.
The fire started at roughly 8pm yesterday, injuring a dad and his two sons.
The three-year-old boys remains in a critical condition.
EARLIER: EMERGENCY services struggled to find the Weranga house where a dad and his two sons were seriously injured, 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 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 (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.
Update your news preferences and get the latest news delivered to your inbox.