"It is a reminder for people, especially in Lyttelton, but anywhere to check first and not park in front of hydrants."
He said early indications show the house did not have working smoke alarms but that has not been fully confirmed.
"If the fire had occurred at night, it could easily have been fatal.
"It's not ideal at all."
Hamilton said the fire was contained at about 3pm and a fire investigator was sent to the scene.
A St John spokesman said they were called to the fire but were not required.
Emergency services were called to the fire on Cressy St in Lyttelton at about 1.40pm today. Photo / George Heard"Our volunteer crews did an excellent job," Hamilton said.