Seventeen fire trucks and crews rushed to the fire at the Mitre 10 Mega in the suburb of Westgate, near Massey, just before 7pm.
A photographer said fire crews wearing breathing apparatus were entering the building.
An emergency controller told the Herald responding crews found the building heavily smoke-logged.
After entering the building, they found a fire in some pallets inside the premises.
“The fire was contained quickly by crews and the sprinkler system.”
Firefighters wearing breathing gear entered the smoke-logged building to extinguish the fire. Photo / Hayden Woodward
The building was being ventilated and a fire investigator was attending the scene.
A northern fire communications spokesman earlier confirmed Fire and Emergency New Zealand was alerted to the situation after receiving two automatic fire alarms at a commercial building in Westgate.
“On arrival, we found the building to be heavily smoke-logged.”
A total of 17 fire trucks from across the city responded to the fire, which reached a third alarm in severity.
The trucks included ladder appliances, the spokesman said.
