Converting a bathtub to a walk-in shower is one of the most popular bathroom remodeling projects. It modernizes the space, improves accessibility, and often makes the bathroom feel larger. It also costs $3,000-$8,000 for a quality job because it involves demolition, plumbing modification, waterproofing, tile work, and a glass enclosure. The tub comes out easy. Everything that follows is where the money goes. Here is what to budget for each component.