No one was injured and there were no suggestions of any structural damage, he said.
Firefighters remain at the site this morning to monitor for any flare-ups.
Meanwhile, fire crews in the South Island were also kept busy at a large vegetation fire at Wanaka's Diamond Lake.
Firefighters were called to the blaze just before 9.30pm.
Four pumps and four tankers were brought in to help douse the blaze and a pump and rural fire officer remained at the scene all night.
A Fire and Emergency NZ spokesman said a flyover will be done at first light to determine exactly how big the fire is and what the next steps should be.