Building regulation drawings, 3D visualisations and Principal Designer services were produced for this warehouse unit scheme in Dronfield. The 3D visualisations were used to advertise the units available to let during their construction. A flexible approach to the technical design of the units was adopted; a refined fire strategy design was produced allowing the units to be used as four separate units, one large unit or a combination of sizes. The separation of the units was determined by the demand that was unique to the warehouse; this flexibility gave the client an advantage within the rental market compared to other less flexible units.