The son received cuts to his face, which needed stitches, and chipped teeth.
Ahomiro, whom Judge Christopher Harding said had numerous previous convictions including 57 terms of imprisonment, was sentenced to 12 years in jail with a minimum non-parole period of eight years.
Beguely was sentenced to 10 years, six months imprisonment with a minimum five year, three month non-parole period, and Waitai was given 10 years, nine months with a minimum five years, three months non-parole.
Tremayne was given 10 years in prison with a minimum five years non-parole and offered to sell a motorcycle, registered under his partner's name, worth $20,000, as reparation for the two victims.
Judge Harding said the four men turned up at the victim's house about 10pm, smashed his ranch slider and entered the house.
The men were armed with a pinch bar, a large metal torch and a set of knuckledusters.
"You had your faces covered and were wearing clothing with Filthy Few gang insignia. You were told to leave the address by the older victim, who was attacked by Mr Ahomiro and repeatedly struck on and about the face to the point in minutes he had lost an eye and had severe fractures to his face and skull."
Judge Harding said the son attempted to escape but was chased down, dragged back and beaten.
"You remained at the property for some time and threatened the victims to the point they provided their bank details. Mr Ahomiro suggested killing them to leave no witnesses."
The four men forced the victim to make repairs to his vehicles and used them to cart away gear taken from the house.
Shortly after, the victims' bank cards were used and cash withdrawn.
Judge Harding said the victims lost more than $25,000 through the burglary, not including lost wages.
The older victim may never work again in his prior occupation due to his loss of eyesight. He read a victim impact statement in court.
"Within one hour, these people took my health, belongings, security and livelihood ... The injuries I received from this attack will be with me for the rest of my life. My eyesight has been shattered, the surgeons had to rebuild half the side of my face. Since the attack, I've suffered memory loss, headaches and concentration problems ... I've been recently informed the sight in my other eye is deteriorating and I've been told in the last few months I won't be able to drive.
"I've been diagnosed with post traumatic stress disorder, I get flashbacks of this attack and often can't sleep at night."
