The midnight blaze on the former De Gruchy home at Albion Park Rail came more than 24 years after most of the family was wiped out in a heinous triple murder, never to be forgotten by neighbours who were among the first to respond to the tragedy.

Eighteen-year-old Matthew De Gruchy was ordered to serve a maximum 28 years in prison for bludgeoning to death his mother Jennifer and siblings Sarah and Adrian, aged 13 and 15.

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He served 23 years and was 41 - the same age as his late mother - when he was released from Long Bay Correctional Complex on August 15 last year.

Firefighters were called 12.08am on May 28 to the Shearwater Boulevarde address. According to Fire and Rescue NSW, crews arrived ten minutes later to find 60 per cent of the home already consumed by fire.

Residents have been told the blaze was the result of an electrical fault; Fire and Rescue NSW was unable to confirm this as the Mercury went to print on Wednesday.

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A neighbour, who moved to the street a decade after the murders, said many residents remained traumatised by the events of 1996 and would be glad to see the home gone.

"You've got to say, it's an unlucky house," he said.

"A lot of poeple in the street have a particular negative attachment to the place because of its history, but it's still somebody's house. It's just a tragedy really, despite its history."

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Paramedics were initially called on May 28 to treat the home's present-day occupants - a mother and daughter aged in their 60s and 90s - but were not required after the pair made it outside safe and well.

De Gruchy's June 2019 parole hearing was told he had the support of his aunt in Sydney and his father Wayne, who lives in Tasmania.

He is allowed contact with his father and his father's new family, who indicated they would actively help him adjust to life on the outside.

Tasmanian authorities denied his application to transfer his parole to Tasmania.

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On Wednesday a spokeswoman for Corrective Services confirmed De Gruchy remained under supervision in NSW.

It is a condition of De Gruchy's parole that he not return to the Illawarra or Shoalhaven regions.

The resident spoken to by the Mercury said he had no concerns on this front.

"When he was released, a lot of poeple were nervous, but why would he have any reason to return here?'