Consumer Affairs, who did not name the victim, have released details of the latest scams in the hope homeowners will be more cautious with deals that are "too good to be true".

The warning comes after record losses experienced by consumers at the hands of fake tradies - over $2.5 million in 2018-19, more than double lost the previous financial year.

Consumer Affairs Victoria has received over 300 reports of fake tradies in the 2018-19 financial year, up 15 per cent on the previous financial year.

The scams often follow a set of well-known patterns including door-knocking, leaflet drops and offering home improvement services such as roofing, tree lopping, painting and driveway resurfacing.

Invariably whatever the promise, the work is never carried out or is of a poor or partial standard, and the scammers disappear as soon as being paid.

In Ballarat 's case they claimed to have leftover asphalt from a previous job and could offer the job extra cheap.

Sometimes their branding, fliers and identification can seem convincing but CAV warns these tradies move around a lot and frequently change their names.

They also managed to scam $16,000 from residents in Mount Alexander and Gannawarra, and a further $14,000 from residents in Greater Shepparton and Benalla.

Consumer affairs has listed a number of warning signs all residents should be wary of