A burglary at Keyline Builders Merchants in Hinckley saw the thieves get away with fencing panels and sewage fittings.
Police are appealing for witnesses following the incident which happened between 6pm on Friday June 12 and 7.45am on Saturday June 13 at branch in Brookfield Road.
The thieves are thought to have got in by removing part of the fence.
Police believe a vehicle was used to transport the goods and are appealing to anyone who may have seen anything suspicious, or who may be contacted by people offering the goods for sale, to contact them on 0116 222 2222.
Keyline are part of the Travis Perkins group.