where is the line where you need permits as to where you dont? example plumbing a new addition you need a permit but what things can you do without, such as repalcing a toilet etc. i plan on replacing 2 toilets , 1 bathroom sink, 1 tub and 1 shower. water softner and heater all new faucetts and shuttoff valves. ive already replacd a pressure tank, whole house filter, and a few leaky valves. i can sweat pipes no problem and will just replace what i remove and wont be changing or adding any runs etc. its a 45 year old house and im worried if i get a permit they will flag the old plumbing. im not worried about the fee or failing my own work though.i just dont want to replumb the whole sytem.