Question: how much does it cost to change the plumbing?
Answer: Cost to Install or Replace Plumbing Pipes Installing new plumbing or repiping an entire home costs $2,000 to $15,000. Replacing or installing new fixtures or small sections of piping, like a bathtub, sink, or toilet will cost between $450 and $1,800 per fixture depending on if it's a rough-in or full install.