Fire crews have requested two further fire engines at the fire.
They are responding from Malpas and Duffryn.
There are now six fire engines, two water bowsers and an aerial appliance committed to this incident.
Four fire crews are in attendance at the fire which is still well alight.
Two water bowsers are in use from Caerphilly and Cwmbran.
FIRE crews are currently tackling a blaze in at a property in Llanhennock.
Three fire engines were called to the two storey, unoccupied property in Llanhennock, Monmouthshire, at 6.26pm tonight, where the fire is reported to be in the roof space.
Fire crews from Maindee and New Inn, are at the scene and a crew from Usk is on route to the building which is under construction.
Two hose reels, four breathing apparatus, one hydraulic platform and one jet are in use, along with a water bowser from Cwmbran.
The building was unoccupied and no one was injured.
The cause of the fire is not yet known.