Meanwhile two patched gang members, aged 22 and 20, have also been charged with unlawful possession of a firearm, along with unlawful possession of ammunition and possession of cannabis.
Additionally, a 27-year-old woman was taken into custody on an unrelated warrant and will appear in court at a later date.
Police said they had seized two sawn-off shotguns - one loaded - an imitation pistol, .22 ammunition, cannabis and a significant amount of cash from the address.
“We hope that these arrests assure the community that Tairawhiti Police are committed to disrupting unlawful activity by gangs in the community,” Moorhouse said.
Police encourage anyone with information about illegal activity taking place in their community to contact 105, or Crime Stoppers anonymously via 0800 555 111.
If there is immediate risk to life or property, call 111.