“Replace the shower” is one of the vaguest requests in remodeling, and it’s the reason quotes for it vary so wildly. Three contractors can hear that sentence and price three completely different jobs, all of them honestly.
The useful first step isn’t getting numbers. It’s deciding which of three jobs you actually want.
Three different projects with the same name
1. A like-for-like swap
The old unit comes out, a new one of similar type and size goes in, in the same position. If you have a moulded acrylic or fibreglass surround, this means a new surround. The plumbing stays where it is, the walls stay where they are, and the finished result is a new version of what you had.
This is the fastest and least expensive route. It’s a sensible choice when the existing shower is sound structurally and the problem is purely age and appearance.
2. A retile in the existing footprint
The shower stays where it is and stays the same size, but the surfaces are rebuilt: old tile off, substrate assessed and prepared, waterproofing installed, new tile set, new glass.
This is where a shower usually becomes properly custom without becoming a large construction project. It’s also where the quality of the work behind the tile starts to matter, because you’re rebuilding the assembly rather than covering it.
3. A full rebuild
The footprint changes, or the type changes: a tub alcove becomes a walk-in shower, a small stall grows into the space next to it, the entry becomes curbless, or the drain moves. Now you’re into framing, plumbing relocation, floor structure and often inspections.
This is the most involved version and frequently the most worthwhile, because it’s the one that fixes what was actually wrong with the room. It just needs to be recognised as a different category of work.
Most disappointing quotes come from a homeowner picturing option three and a contractor pricing option one.
What drives the price within each option
Whether the drain moves
The single most consequential technical question. Keeping the drain where it is keeps the floor closed. Moving it — which converting a tub alcove to a larger shower usually requires — means opening the floor, reworking the drain line and its venting, and repairing what was opened. If the bathroom is above a finished room, that includes the ceiling below.
Base: prefabricated or built on site
A prefabricated base with tiled walls above is efficient and reliable. A custom pan, built and sloped on site, allows any size or shape, a linear drain and a curbless entry, and gives a continuous tiled floor. More labor, more skill, more flexibility.
Waterproofing
The part you’ll never see and the part that determines whether the shower lasts. Tile and grout are the wear surface, not the water barrier. What matters is that a complete, defined system is specified and that corners, the curb, the niche and the drain connection are all detailed properly — that’s where failures start.
It’s also the most common place for a low quote to be low. Ask specifically what method is being used.
Tile choices
Format, material and pattern all change the labor. Large formats need a flatter substrate; mosaics mean many more pieces; natural stone needs more care; herringbone and stacked layouts generate more cuts than a simple offset. None of this is a reason to avoid a choice you love — it’s a reason to know what it costs before you commit.
Glass
Often the largest line after tile. A fixed panel is simplest, framed doors sit in the middle, and custom frameless enclosures are the most expensive — heavier glass, made to measure, and usually templated only once the tile is finished, so it affects the schedule too.
Valves and fittings
Swapping a valve in place is modest. Adding a second head, a hand shower, body sprays or thermostatic control means more valve bodies, more supply runs and open walls.
What’s behind the old shower
Nobody can price with certainty what they can’t see. Old showers are the most likely place in a house to be hiding damage, because they’ve been wet for decades. Failed waterproofing, deteriorated backer board, a soft subfloor at the pan, or damaged framing are all realistic finds. A good estimate says how that will be handled; a quote that ignores it hasn’t removed the risk.
Which option is right for you?
A rough guide:
- The shower works but looks dated, and you’re happy with its size and position. A swap or a retile in place is likely the sensible spend.
- There are signs of a leak — loose tile, persistent damp, staining on an adjacent wall or ceiling below. Rebuild rather than resurface. Covering over a failing assembly is the most expensive form of saving money.
- The shower is too small, or you want to lose the tub. That’s a rebuild, and it’s usually the one that changes how the bathroom is used every day.
- Step-free access matters now or later. Raise curbless early, because it’s a structural decision rather than a fitting choice.
Making quotes comparable
For each estimate, establish: which of the three options it describes; whether the base is prefabricated or custom; what waterproofing system is specified; whether the drain is moving; how much tile and in what format; what glass is included and when it’s measured; and what happens if damage is found once the old shower is out.
Answer those and the numbers become genuinely comparable. Without them you’re comparing a total against a different total for different work.
For more detail on the shower itself, what a walk-in shower really costs breaks the assembly down piece by piece, and what a walk-in shower actually is explains the curbed and curbless choice. Our guide to what a bathroom remodel costs covers how the shower fits into a whole-room budget. You can also read about our bathroom remodeling services or get in touch.
