Emergency services are at the scene of a crash in Auckland's Glendowie where a car has smashed into a house.

A witness at the scene of the crash on Peacock St said a car with a teenage driver and passenger appears to have mowed through a hedge, flown down a bank and hit a side of the house.

It's understood a car hit a young's girl bedroom and a woman came out of the house screaming at the driver and passenger.