Emergency services were alerted to the fire at around 1:40am this morning and remained on scene until 10am.
Cork County Fire Service say the occupants of the building escaped unharmed while Garda Press told RedFM News that the cause of the fire is understood to have been accidental.
An Post says customers in Midleton will be able to collect welfare payments and access postal services in Carrigtwohill and Castlemartyr.
