A woman was pulled from a burning house in Sydney on Thursday morning as smoke and flames billowed from a unit two floors above.

Fire crews in Sydney were called to an apartment building on Bentick Street at 5 a.m., where smoke and flame were billowing from the top floor attic unit.

During their search of the building, firefighters found a woman asleep on the first floor.

Platoon Chief Paul Ferguson said she wasn't aware of the situation.

Sydney Fire

The third floor attic apartment of this building on Bentick Street in Sydney suffered extensive damage after a fire Thursday morning. (Joan Weeks CBC)

"We all pull together in times like this," he said.

"When you are called to a multi-unit apartment building, life safety is our first priority and once we do our primary searches and ensure everybody is out of the building, we effectively attack the fire."

No one was injured.

The attic apartment was gutted. No one was home in that unit. The flames are out, but crews are patrolling for hot spots and the cause is still under investigation.