Currently have a garden tub with the hot and cold water attached to the tub not in the wall. We are replacing this tub with a walk in shower and need to replumb the hot and cold water pipes into the wall and add a one handle on off shower handle.

What is your question?

If you are not a DIY'r get 3 quotes from a plumber. Will need to install new plumbing into the wall and possibly drains.