A woman was flown to hospital in a critical condition after falling down a flight of concrete stairs at her home north of Auckland yesterday.

The Auckland Westpac Rescue Helicopter was called to Tapora, in the Kaipara Harbour, about 3.40pm.

The woman was flown to Auckland City Hospital in a critical condition, said a rescue helicopter spokeswoman.

Tapora is on the eastern side of the Kaipara Harbour, west of Wellsford.