Police said the victim was found in a critical condition inside the house and was taken to hospital for treatment.
Officers are now working with Fire and Emergency NZ investigators to determine the cause of the blaze.
Northern fire communications said four fire trucks responded to a blaze at a single-level residential dwelling at 9.27pm.
Fire crews at the scene of a house fire in Glen Eden last night. Photo / Hayden WoodwardFire investigation staff at the scene confirmed they would be returning to the property this morning to carry out an investigation.
A photographer said three fire trucks and a hazmat (hazardous materials management) command unit vehicle were also there.
By 10pm, Police were at the scene too and could be seen working inside the house alongside fire investigators.
Fire crews work inside a house that caught fire in the West Auckland suburb of Glen Eden last night. Photo / Hayden Woodward