Part of Ocean View Rd has been closed off to the public due to what has been described as a "police incident" overnight.
St John also confirmed they received a call at 9.59pm.
A rapid response unit and two ambulances responded to the property and treated one person in a moderate condition. That person was then taken to North Shore Hospital.
At the scene this morning, a blue tent has been put up outside and police tape circles the area - including at least two cars parked outside the property.