Put some sort of access, such as an unfinished closet, behind every place where plumbing is installed in the wall. Get access to the shower valve without rippin

Put some sort of access, such as an unfinished closet, behind every place where plumbing is installed in the wall. Get access to the shower valve without ripping out your tile. Get access to the back of your dishwasher, along with the water/sewage connections and a 20-Amp 3-prong socket. Get room next to your toilet, ensuring that you can get down there to mess with bolts and valves. Make sure your attic is at least a foot tall around all the edges, letting you drill straight outward to install things like lights and cameras and overhead utility connections.