Depending on the scale of your development you may require building regulations drawings and approval in addition to structural engineering calculations. Building regulations drawings address the technical details such as materials, the thickness of walls, and the number of steel beams required. To ensure your development meets the required regulations, is safe, and will stand the test of time.
To quote and produce building regulations drawings we require your architect drawings, that show the design. The architectural design from the planning stage will determine exactly what is required for building regulations. The cost of building regulations drawings will depend on the scale and complexity of the design. Large and simple could be cheap, whereas small and complex could be expensive.
It is strongly recommended that you do not pay for building regulations drawings until you have planning approval for your development. Planning approval is never guaranteed and who wants to pay for building regulations if planning permission is refused? Also, if your design changes during the planning process, you will need a new set of building regulations drawings and structural engineering calculations, at additional cost.