THE fire gutted a second-hand clothes shop and a derelict building on Convent Road in Dalkey.
It is understood that the blaze broke out shortly after 2pm; gardai are investigating the cause of the fire.
On the other side of the city, two fire brigade units spent much of the early hours of this morning dealing with an inferno that broke out at a hay barn in Castleknock.
The fire was located close to Luttrellstown Golf Club.
No one was injured in either incident.