Rotorua fire station attended 954 real incidents in the 2016 financial year. Only 432 - 45.3 per cent - were for actual fires, while 418 were for rescue, emergency, medical or hazardous emergencies, 87 special service events, and 11 natural disasters.
It also attended 434 false alarms.
Rotorua Central Lakes area commander Graham Fuller said the change wouldn't really be a change.
"In all honesty with what we are already doing within the community there is no change."
He said the local brigade had been working with St John for medical responses and had been responding to other calls, ranging from civil defence to weather-related incidents, for some time.
"There is no change for the people on the ground, it's about legislation and the amalgamation," Mr Fuller said.
"The updated legislation will support us in our broad range of jobs." The two next busiest stations in the area - Whakatane and Kawerau - attended 122 fires, 138 rescue, emergency or medical situations, and 170 false calls.
Mr Baxter said the act would give the new organisation the funding and legal authorisation to do what the Fire Service hadbeen tasked with previously.
"In a lot of respects, the changes to the legislation are catching up with the demands and needs of the community by providing an updated mandate." He said the transition, which was progressing through Parliament, had been hailed by the majority of those in the affected organisations, but hada few kinks to be ironed out.
It was a big task, especially with the usual day-to-day incidents still to attend.
"It's a very important aspect of our organisation to make sure our 'business as usual' emergency responses continue uninterrupted. The truck keeps going down the road while we're trying to change the tyre, basically."
Internal Affairs Minister Peter Dunne said the funding for the transition and the organisation's new responsibilities would come from an increase to the fire levy, which was paid on insurance for contents, property and motor vehicles.
The levy will be extended to also include third-party motor vehicle insurance.
- Additional reporting Kyra Dawson