The men, aged 22, 24 and 27, are due to appear before court in Newtownards on Thursday.
A man in his 20s was hurt by a gang with baseball bats and screwdrivers during the attack on Monday.
It happened at Bartley's Wood, Ballywalter.
The man was treated for injuries that were not thought to be life-threatening.
Earlier on Wednesday, a 33-year-old man appeared at Newtownards Magistrates' Court, charged with grievous bodily harm with intent, common assault and aggravated burglary.
Two women in their 20s were in the property at the time of the attack on Monday and one of them sustained minor injuries.
Three more men have been charged with grievous bodily harm with intent, common assault and aggravated burglary following a paramilitary-style attack in County Down.