Between 7:45pm Monday 12 October and 8:00am Tuesday 13 October 2020, access was gained to a property on Turnbull Street in Harvey.
Car keys were taken from inside the address and two vehicles were stolen.
The location of a black and silver VZ Manual Commodore is still being sought by police.
Police have released a CCTV image of a man who they believe may be able to assist them with their investigation.
The man is described as: tanned skin, average build. He wore a black beanie, striped shirt, black trackpants, white socks and slides.
If you have any information about the identity of this man or details of this offence please contact Crime Stoppers on 1800 333 000 or report online at www.crimestopperswa.com.au. You can remain anonymous if you wish and rewards are available once charges are laid. Please quote Reference Number 9976