Fire and Rescue NSW crews from Leeton, Narrandera and Griffith raced to the scene of the fire just before 7pm, finding the Beech Street property fully ablaze on arrival.

FRNSW Duty Commander Matt Hunter said a working fire alarm in the home had saved the lives of the family inside and they were able to get out unharmed.

"The single-level family home was totally involved in fire when crews arrived," Duty Commander Hunter said.

"They were able to establish early on that a family of eight had self-evacuated.

"Crews got to work and, through great efforts, were able to stop the fire from spreading to neighbouring buildings.

"The fire was quite fierce and intense. It was generating a lot of smoke through the neighbourhood."

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It took crews about 40 minutes to bring the blaze under control, with the fire fully extinguished about one hour later.

Police and paramedics were also on scene, but there were no reported injuries. Investigations into how the fire started are ongoing.

Murrumbidgee Police crime manager Eugene Steck has said the fire did not appear to be suspicious.

Detective Inspector Steck said officers were due to return to the property yesterday as part of their investigation.

"Unfortunately the house was totally destroyed and structurally unstable," he said.

Leeton mayor Paul Maytom met with the affected family and they have secured short-term accommodation with a friend. Cr Maytom said the community was supporting the family.

Duty Commander Hunter reminded residents during the winter months to take precautions when it came to heating and cooking to ensure a fire doesn't start in their home.

"We always say every year as part of our winter campaign when drying clothes to keep them a metre from your heater," he said.

"We'd also like to remind people to check their smoke alarms are in good working order as that is what has saved the lives of this family."