Here at Ed Young's we replace bathtubs and preformed solid shower bases (tile walls by others) - we install the fixtures, but we don't repair the walls, ceiling, and/or tile work.
Some plumbing companies claim they will do the complete job, but most, if not all of these companies sub contract out the non-plumbing work, and then mark those charges up also, which ends up costing the homeowner more $$$. We choose to work with our customers and their own sub contractors -
This way we only charge for the plumbing that we are the experts in.
We also of course make all kinds of repairs, by finding the leaks and professionally repairing them right the first time!
(even if we find out it's not plumbing related, we still can search for/and find the problem)
EYP does not install tub or shower stall walls - we do recommend tiled walls
Related links:
Borescope, a handy tool our customers really appreciate for making a much smaller hole in the wall or ceiling to find leaks.