Michael Cardamone pleaded guilty in the Supreme Court last week to murdering Ms Chetcuti (nee Verbunt), his neighbour in the tiny town of Whorouly in the state's north-east in January last year.

Cardamone, who raped a 15-year-old girl in 2005, had been on parole for less than six months when he killed the 49-year-old.

"He was free to roam around," Ms Chetcuti's former husband Tony Chetcuti said.

"This has happened too many times. It's not just Cardamone. Look what happened with Jill Meagher."

Lawyer John Suta alleged the state was negligent and fell below the reasonable standard of care in monitoring Cardamone, who was paroled to live with his elderly mother at the rural property in 2015. His father, a school bus driver who had run a catering business with his wife, died in 2014.

Their property shared a boundary with Ms Chetcuti's. 

Mr Suta said he will file a statement of claim in the Supreme Court in a matter of weeks on behalf of Mr Chetcuti and their two teenage children.

"As a consequence of the negligence or breach of duty, my client has suffered injuries, loss and damage," he said. 

The Department of Justice would not comment, with the criminal case yet to be finalised. Cardamone faces a plea hearing on August 21.

Questions were raised about the case because Cardamone was on parole and had breached parole twice.

It is understood Cardamone failed a drugs test in May 2013. His parole was cancelled and he was in custody for almost a year before he re-applied for release. Parole was approved and he was back in the community in March 2014.

Almost a year later, the 50-year-old again breached parole when he was charged in February 2015 with producing child pornography over an image found on his mobile phone of a six-year-old girl's bottom.

Cardamone spent more than four months in custody, but his parole was again approved in July 2015 after the charges were dismissed in the Magistrates Court.

He murdered Ms Chetcuti, who worked at the Wangaratta City Council, on January 14, 2016. 

Her tortured body - burnt when she was possibly still alive and injected with battery acid after she died - was discovered on January 18, the day of her daughter's 14th birthday.

Mr Chetcuti said her murder had turned their world upside down.

"It has devastated us. Today is Jack's birthday (the couple's eldest), he's spending it without his mother," he said on Thursday.

The couple moved to Whorouly from Epping, in Melbourne, more than 20 years ago to run the local pub. They sold the pub in 1995 and had separated more than a decade later.

Cardamone was 38 when he raped a 15-year-old girl in a caravan on his parents' Whorouly property in 2005. The girl had been working on the then tobacco farm and lived in the caravan with her boyfriend.

In a report tendered to the County Court, two psychiatrists said Cardamone viewed women as sexual objects and not human beings.

"You developed an unnatural attitude towards women, largely because you never had a relationship with one, with the result that you viewed them as sex objects, not human beings," one wrote.

Another concluded the likelihood of further sexual offending would probably be reduced if he stopped using illicit drugs. He was sentenced to a minimum of six years in jail upon appeal and a maximum of nine.

The expected civil suit is the latest legal action against the state by families whose loved ones were killed by offenders on parole or supervision orders. The families of five murder victims - Sarah Cafferkey, Raechel Betts, Joanne Wicking, Evan Rudd and Douglas Phillips - along with two sexual assault survivors, launched coordinated civil action last year. 

The parents of Elsa Corp - a 26-year-old hairdresser killed by a parolee in a Melbourne hotel in 2010 - lodged separate action last year. 

Jill Meagher was raped and murdered in Brunswick in 2012 by Adrian Ernest Bayley, who was on parole for sex assaults.