Police are investigating after a car crashed into the bedroom of a Port Kennedy home on Thursday night.

Police are investigating after a car crashed into the bedroom of a Port Kennedy family home on Thursday night.

The bedroom is understood to be that of the family's five-year-old daughter, who was watching television in the living room at the time.

The Hyundai Santa Fe station sedan struck a letterbox and front of a house on Bayonne Gardens at about 7.10pm.

A woman in her 30s who was the sole occupant of the vehicle was not injured and is assisting police with their inquiries.

No occupants of the home were injured.

Anyone with information regarding this crash is asked to call Crime Stoppers on 1800 333 000 or report online at www.crimestopperswa.com.au. People providing information to Crime Stoppers may remain anonymous if they wish.