Please ask away, we are in a conservation area which demands that detailed drawings are submitted from the get go. However, we’ve nearly finished our ‘design concept’ with our architect and then plan to discuss this with timber frame companies understanding that changes are likely to be made. We will then give it to the planning consultant for comments before finally submitting it to planning. Our planning consultant originally had a significant role within the planning department up until he retired, we are hoping that his knowledge will ease us through the process and help us avoid significant reworking.