Plenty of companies will replace your shower. Far fewer will finish the rest of the room. The result is a brand-new tiled shower sitting next to a dated vanity, a stained ceiling, and walls that still show the old towel bar holes.
A complete remodel treats the bathroom as one project. That means demolition of everything that's being replaced, waterproofing behind the new shower, new or repaired drywall, and fresh paint on walls and ceiling before anything else goes in.
Then come the pieces you use every day: a new vanity and sink, faucet, toilet, mirror, lighting, and hardware. Floor tile ties it all together and should be planned with the shower tile, not picked separately.
Doing all of this with one crew saves time and headaches. There's no waiting on a drywall guy before the painter can start, no finger-pointing between trades, and one person to call with questions.
When you get estimates, ask each contractor what's actually included. A written estimate that lists drywall, paint, vanity, and toilet installation alongside the shower is a good sign you're getting the whole room done.