RNZ reported an armed officer was guarding the property as a precaution while the investigation continued.
It was not yet known if the shooting was gang-related.
A Hato Hone St John spokeswoman said one ambulance, one rapid response unit and one helicopter responded to the scene.
“Our ambulance officers treated one patient in a serious condition, who was airlifted to Whangārei Hospital.”
The incident came after a man was shot in the neck with an air rifle overnight in a rural area south of Kaikohe.
He had been flown to Auckland Hospital for surgery and was in a serious but stable condition.
A police spokesperson said a 34-year-old man will appear in Kaikohe District Court on Monday, charged with unlawfully possessing a firearm/weapon and intent to cause grievous bodily harm.
Fouhy told RNZ he was “very lucky” the outcome was not worse and the two incidents were not related.
It is understood the offender left the Tawa St incident in a ute, RNZ reported.