St John ambulance staff were called to the incident but it is understood no one was hurt.
Mr Sabin said early indications suggested the fire started in the home's sunroom after inappropriate disposal of ashes.
A reporter at the scene said there was a still strong smell of smoke in the air.
Earlier: Firefighters are heading to reports of an elderly man trapped inside a burning house in Welcome Bay.
It is understood the man is believed to be inside a house on fire on Welcome Bay Rd near Arawata Ave. Firefighters are responding to the incident, which was called in about 9.50am.
More soon.