A clause in the JCT Standard Form of Building Contract with Contractors Design 1998 making the building contractor responsible for the design of the building. The clause seeks to put the contractor’s design liability on the same footing as that of the architect or other professional, i.e. on the basis of a duty of reasonable care. The clause does not call upon the contractor to effect insurance but the contractor’s design liability can be insured in the professional indemnity market.