Groups of people pretending to be VicRoads workers are fixing driveways and offering to paint parking bays in an elaborate scam across Melbourne.

There have been six reported cases of people knocking on doors of businesses and homes offering to lay new asphalt and mark lines. In two cases, standover tactics were used by the scammers who carried out work without consent before demanding payment, a ploy which was successful on one occasion.

The scammers have been offering to fix driveways. Credit:The Age

In one case, two men – using fake VicRoads identification and a VicRoads-branded ute – knocked on the door of a Langwarrin home and offered to fix their driveway using what they said was "left-over" asphalt from nearby construction projects.

Minutes after the owner agreed to pay $20,000 for the work, trucks and rolling machines arrived at the home. Upon payment, an invoice was created using the company name "Vic Road Marking Pty Ltd".