Sydney toddler survives 10m balcony fall

He was taken by ambulance to Westmead Children's Hospital in a serious condition, a spokesman for Careflight confirmed.

"This young boy has fallen quite a distance, about 10 to 12 metres from the balcony of a top floor apartment," NSW Ambulance Acting Inspector Mark Thomas said.

"He landed in bushes below, which may have broken his fall and prevented more serious injuries."

The boy is undergoing further scans.

NSW Police were called to the scene, and said the incident was not being treated as suspicious.