Detective Sergeant Michelle Elmer said police had received complaints as well as anecdotal accounts of North-West residents and businesses being scammed by tradespeople offering to seal and fix their driveways.

"In these cases the work has been completed despite the work initially being declined," she said.

"The work completed has been of poor quality and they have charged highly inflated prices."

Detective Sergeant Elmer added that the scammers spoke with English or Irish accents and used high-pressure sales tactics saying they had leftover asphalt from a previous job that could be used on driveways and have attempted to intimidate people for payment.

"In these cases the scammers have provided what appears to be a legitimate business card and invoice," she said.

Police have urged the public to be wary of unsolicited approaches of this nature and contact them immediately if they feel unsafe or threatened.

Reports of scams can be made to scamwatch.gov.au.