I am doing a small project on my house, a 1930s semi. It involve knocking through from the kitchen to the back half of the through lounge, then blocking off the back wall of the kitchen to create an understairs toilet, opening on to the hall. I have had a structural engineer's report done and submitted the building regulations application. I need to get drawings done for my builder and probably for the building regs application as so far I have only submitted a rough drawing, showing the proposed changes to the current floorplan (attached). I can supply the structural engineer's report on commencement of getting the drawing done.