The blaze is approximately the size of four rugby fields.
One person has sustained minor injuries.
Fire crews were sent from Wellington to help battle the blaze.
The 63-year-old is charged with arson.
Seven crews were at the scene overnight.
Three vehicles have already been destroyed.
More than 550 shelters housing more than 3000 people were destroyed.
"All it takes is for one fire to happen in Auckland, and we have no backups."
Many are frustrated by what they call contradicting advice from health and education officials.