Dodgy tradie nephew of Scott Morrison admits carrying out illegal building work - as his devastated victims say he won their trust by using family photos of his famous uncle before scamming them out of thousands

Scott Morrison's nephew used family snaps of Christmas lunch at Kirribilli House to win the trust of innocent families before he left them thousands of dollars out of pocket with dodgy building work.

Mitchell Cole pleaded guilty to 17 charges when he faced Parramatta Local Court on Wednesday, two years after complaints first emerged he was carrying out 'unlicensed' and 'uninsured' work.

NSW Fair Trading brought the charges against the name-dropping relative of the Prime Minister with a list of aggrieved parties coming forward to give evidence.

Uncle ScoMo: Prime Minister Scott Morrison and his nephew by marriage Mitchell James Cole during a Christmas shindig at Kirribilli House in 2018

One of his victims, James McCall, handed over $33,000 to Cole for some building work on his backyard and pool.

But Cole left the home unfinished and in tatters with no gate for the property's fence and pool tiles that weren't stuck on properly, which later peeled off, Mr McCall claims.

'He'd message me and say "I'll be around tomorrow", and he'd never show up,' Mr McCall told Nine's A Current Affair.

The hardworking Aussie said Cole was quick to speak about his famous uncle when they met.

'We just struck up a conversation and he told me he was related to Scott Morrison. He uses that to make himself look legit and he seemed genuine,' Mr McCall said.

'Do not trust him one bit.'

Scott Morrison's nephew pleaded guilty to 17 counts of carrying out 'unlicensed' and 'uninsured' work in 2019, when he faced Parramatta Local Court on Wednesday

Cole has been operating under a series of business names over the past few years

Fay Voyiatsis said it was the same story when Cole offered to revamp her backyard, which remains in disarray.

'He told us Scott Morrison was his uncle and he showed us pictures of him and his extended family including his uncle having Christmas together,' Ms Voyiatsis told the program, fighting back tears.

She paid Cole $56,000 for the uncompleted home renovations and says 'he's taken our dreams and turned them into a nightmare'.

'I don't think he ever had any intention of finishing this job, he was just trying to get as much money out of us as possible and walk away.

'It's terrible to think you've been taken for a fool like this just because you are trusting.'

 Pictured: What remains of the unfinished building work at one of Cole's victim's homes

Yet another victim, Peter Flanagan, launched a civil suit against Cole and $28,000 in a tribunal judgment that ruled Cole was responsible for the damage done to their property.

But despite the ruling Mr Flanagan has not seen a cent.

'It was a mess. We actually had no front door that we could access our house from so I just tried to go down all legal avenues to recoup the money,' he said.

'He's a slime ball.'

Cole will be sentenced next month with his lawyers requesting a report be prepared by a psychologist before the sentence is handed down.

Mr Cole is seen in 2019 when he was confronted by an A Current Affair reporter on the street in an unedifying moment for a relative of the nation's leader