Both brothers fronted Wollongong Local Court in person on Wednesday, 14 months after they were arrested and charged over their alleged involvement in a property scam through their development company, LuxLiving Homes, in Albion Park Rail.

The duo each faced 20 counts of publishing false or misleading material to obtain an advantage and one count of participating in a criminal group.

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Police had alleged the 33-year-old brothers used falsified documentation in an attempt to obtain a $14.7 million loan to construct homes for their 92-home property development, Avoca Park, in Avondale.

However, a solicitor representing the Director of Public Prosecutions formally withdrew all fraud-related charges against Charbel in court in March. No explanation was given for the about-face.

The charges remain active against Eli, who was expected to plead guilty on Wednesday, however his lawyer asked for an additional two weeks for the parties to agree on the contents of the fact sheet to be presented to the court for sentencing.

Meanwhile, Charbel entered guilty pleas to four unrelated firearm and gaming machine charges.

While agreed facts are yet to be settled in the case, the Mercury understands the firearm charge relates to allegations Charbel fired a .22 calibre Zastava Arms bolt action rifle at a balloon being held by his wife Sara during a gender reveal party for their unborn child at the family's Calderwood home on May 5, 2019.

The gaming charges stem from the discovery of two illegal poker machines at Charbel's home during a search warrant carried out in February last year.

The two men, who arrived at court wearing near-identical blue suits paired with white business shirts and black ties, remain on conditional bail. Their cases will return to court on May 11.