The police armed response team swooped on the property in Parklands after reports of a verbal altercation at 9.15pm on Thursday.
A police spokeswoman said one person was reportedly carrying a firearm.
A 37-year-old man is expected to appear in the Christchurch District Court on Friday facing firearms-related charges.
The spokeswoman said it did not appear any of the threats made during the altercation were significant. No one was injured, she said.