The Cottonwood St house was consumed by flames when the fire crews arrived at 2.45am today.

The house was well ablaze when crews arrived, Southern Fire Service shift manager Brent Dunn said.

One person is being treated for minor burns after a house caught on fire in Porirua, Wellington.

Firefighters have managed to contain a bush fire on the Wither Hills, near Blenheim.

Four people escaped with minor injures after a single-story home in the Waikato caught fire.

Two fire crews were called to the Te Rahu Rd address at Poroporo shortly after midnight.

Four appliances from Turangi and Taupo and the Rural Fire Authority helicopter have been battling the blaze since 2pm.

A multimillion-dollar Waiheke Island mansion, formerly linked to Mark Hotchin, has gone up in flames. The 1990 mansion, which was once owned by a trust, KA No3, linked to Mr Hotchin, was set ablaze on Saturday as part of a firefighting drill on the Hauraki Gulf island.

WATCH: Smoke alarms credited for saving family of six.

Firefighters will return to the scene of the Hamner Springs Fire tomorrow at first light.

A massive bushfire has cut off the South Island town of Hanmer Springs today. There were 17 fire crews fighting the blaze including rural tankers.

Fire crews were last night called to a fire in the sand dunes at New Brighton.

Five school staff are being treated for smoke inhalation after at fire at St Kentigern's School for girls.

The Waimate Hotel in Manaia, south of New Plymouth, has been destroyed by fire.

A Hamilton family had a lucky escape from a fire which swept through a Dinsdale house early this morning.

Raucous couch-burning students in Dunedin have accidentally set a house on fire during their partying.

Homes were evacuated as 18 fire crews and two helicopters battled a blaze which destroyed a house in Canterbury and put one person in hospital with burn injuries.

A firefighter was injured after falling through a staircase in a burning Grey Lynn house early today.

The blaze broke out at Glinks Gully at about midnight.

Seven fire crews and a helicopter have brought a large fire north of Pines Beach in Canterbury under control.

A man injured in a fire while doing demolition work at Marsden Pt oil refinery remained in Whangarei Hospital yesterday.

At its peak the fire was believed to be 1km in length and had 11 crews working to contain it.

Westland High School students and staff were back in a school routine yesterday, although not from the actual school premises, which remain cordoned off following the fire.

The vehicle, in a southbound lane near the Papakura exit, was burning fiercely when fire crews arrived at the scene.

A fire destroyed a home in Middlemarch yesterday and left the occupants, including a mother and her two sons, counting their losses.