Police are investigating a break in at Opalite Caravans in Beresfield.
The staff arrived to find the lock on the perimeter gate had been cut and and the rear door forced open.
The intruders stole a number of items including an assortment of tools and what's being described as a white, pop - up caravan trailer.
The caravan which had just been finished is unregistered and was due to be collected by the customer this week.