Fire and Emergency (FENZ) is monitoring hotspots that could reignite the Matakana Island blaze after a large-scale battle to stamp it out.
The fire, which started on Saturday, December 23, burnt through about 41 hectares of scrub and pine slash.
Over the past week, 18 brigades have worked to bring the fire under control.
"Crews worked incredibly hard over the last week to initially suppress and then reinforce containment lines to make sure the fire can't break out," incident controller Jeff Maunder said in an update on Saturday.
"We have met with forestry, landowners and the community and will now work alongside them to ensure the fireground is safely returned to them."
Water carts and diggers will remain on site and the Matakana Island Volunteer Fire Brigade will monitor the fire ground until FENZ is confident the fire can be officially declared out.
Maunder said crews will continue to use drones, thermal imagery and ground patrols, to capture hotspots in dangerous locations that could reignite a large fire.
"As we enter this monitoring phase, we have plans in place to escalate back to a response if required.
"Our crews sacrificed Christmas with their loved ones to bring this fire under control and I am incredibly proud of their hard work.
"The fire ground remains off limits to the public as it is still an operational area for our crews and there may be further hidden hazards including unstable trees or ash pits."
Maunder also thanked the Matakana Island community for their food donations, support and well-wishes over the past week, especially over the holidays.
An investigation into the cause of the fire is ongoing.
