Northern fire communications shift manager, Colin Underwood, said the fire was on the first floor of the two-storey building and involved an LPG cylinder.
Firefighters work to control a fire at the Allan Brewster Leisure Centre in Papatoetoe. Photo / Dean Purcell
They were initially alerted by an alarm activation before several 111 calls started to come through, he said.
No injuries have been reported at this stage, Underwood said, and it is not thought neighbouring properties are in any danger either.