The man was expected to appear in the Christchurch District Court on Monday, facing charges of wounding with intent to injure and unlawfully using a firearm.
He has also been charged with assault on a female for an offence relating to a different incident, a police spokeswoman said.
Police were called to the Strickland St property in Spreydon about 3.10pm after a person reported hearing a gunshot.
The victim, who is recovering, had already been taken to hospital when emergency services arrived.
Police officers armed with rifles, a dog unit and an armed response team were seen outside the Strickland Rd property.
