Bathroom Remodeling · Service

Tub to shower conversion, and what is really in the alcove

Taking a tub out and putting a shower in is one of the most-sold jobs in remodelling, which is why almost everything written about it is written by someone with a product to install. What decides the price is the drain, the substrate and how much of the wall comes off.

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In short

What is tub to shower conversion?

A tub to shower conversion removes a bathtub and builds a shower in the same alcove. Because the two fixtures use the space differently, the job almost always involves moving or reworking the drain, replacing the valve, and rebuilding the walls of the alcove — the tub does not simply lift out and a shower drop in. How much of that work is done, versus covered over, is the difference between a two-day job and a two-week one, and it is the question every quote should answer.

Triggers

Signs you need tub to shower conversion

Nobody in the household has taken a bath in years and the tub is functioning as an awkward shower tray
The tub surround is cracked, the tiles around it are loose, or the caulk line has been redone repeatedly and keeps failing
Getting in and out over the tub wall has become the difficult part of washing
The bathroom feels smaller than it is because a full-length tub is eating the only wall with any length to it
There is a second bathroom with a tub in it, so the household is not giving up bathing entirely
You are already replacing the valve or chasing a leak in that wall, which is when the marginal cost of converting is lowest

Seeing something not on this list? Browse bathroom remodeling problems by symptom →

The job

How tub to shower conversion actually works

Establish what happens to the drain

A bathtub drains at one end through a waste and overflow assembly; a shower drains through a centre or linear drain in a floor built to fall toward it. Those are rarely in the same place, so most conversions involve opening the floor to move or extend the drain. Where the floor can be accessed from below it is straightforward; on a slab it means cutting concrete.

Watch for: A quote that never mentions the drain. Either they have found a base whose outlet lines up — worth confirming — or they have not looked, and the number will change once the floor is open.
Decide prefab base or tiled pan, because everything follows from it

A one-piece acrylic or solid-surface base is fast, factory-formed to fall correctly, and has no grout. A tiled pan is built on site over a waterproofed, sloped bed and can be any size or shape, including curbless. The base decides the timeline, the price and how much of the job is craft versus assembly.

Watch for: A tiled pan quoted at prefab prices. Building a shower floor by hand and waterproofing it properly is skilled work, and a suspiciously cheap tiled pan usually means the waterproofing is where the saving came from.
Strip the alcove back and look at the walls

The tub, its surround and the wall covering come out. In older bathrooms this is where soft or blackened substrate around the tub flange appears, along with any framing damage under the old waste. Everything found here has to be dealt with before the new shower goes in.

Watch for: A crew willing to install straight onto whatever they find. If the reason you are converting is that water has been getting in, the substrate is the thing that must be replaced, not covered.
Rework the plumbing — the valve, not just the pipe

A tub-and-shower valve has a diverter and a tub spout outlet; a shower-only valve does not. The valve typically gets replaced and reset at shower height, and this is the moment to fit a pressure-balancing or thermostatic valve if the existing one is not one. Adding a handheld on a slide bar is far cheaper now than later.

Watch for: The old valve reused with the tub outlet capped off inside the wall. It works, and it leaves a capped fitting buried behind new tile forever. Ask what is being left in the wall.
Waterproof, then build the enclosure

Backer board goes up, the wet area gets a continuous waterproofing layer, the base or the sloped pan is set and tested, and the wall covering — tile or panel — goes on. On a tiled installation the membrane, the corners and the drain detail are the whole job; on a panel system the joints and the base flange are.

Watch for: Shower walls left at tub height. A shower wets the wall far higher than a bath does, and stopping the waterproofing or the tile where the old surround stopped is a defect you will discover as a stain on the other side of the wall.
Glass, screen or curtain

A fixed glass panel with an open entry is the common answer and needs no track to clean. A hinged or sliding enclosure contains water better in a small alcove. A curtain costs almost nothing and is easier to move around. Frameless glass is measured after the walls are finished, so it arrives a couple of weeks behind everything else.

Watch for: The lead time on custom glass being left out of the schedule. It is the single most common reason a "finished" shower stays unusable for another fortnight.
Make good the room around the alcove

A tub is longer and taller than most shower bases, so removing it exposes floor and wall the tub used to hide. Floor tile may need patching, the skirting line changes, and the wall above the old surround usually needs making good and painting.

Watch for: This work not appearing in the quote at all. It is genuinely easy to overlook at the walkthrough and it is genuinely not free.

Money

What does tub to shower conversion cost?

Tub to shower conversions commonly run between $4,000 and $15,000. A prefab base into an existing alcove with the drain reused sits at the bottom; a tiled pan, a relocated drain, and frameless glass push toward and past the top. The drain and the base type move the number more than the tile does.

See the full tub to shower conversion cost guide — by material, size and region →

Straight answer

When tub to shower conversion is the wrong call

Everyone else ranking for this is paid when you say yes. Here's when you shouldn't.

It is the only bathtub in the house. Homes with a single tub and no second bathroom lose something real: some buyers actively look for a tub, and households with small children need one. If there is a second bathroom, convert that one and this concern disappears entirely.
The tub is sound and the actual complaint is the surround. Re-tiling or replacing a cracked three-piece surround around a good tub is a fraction of a conversion, and it fixes the thing you are unhappy with. Get that priced before committing to removing a working fixture.
Your reason is accessibility and nobody has assessed what the person can actually do. A shower is often the right answer, but that decision is about transfer, seating and reach rather than about the fixture — see converting a tub for accessible bathing before you choose a product.
The bathroom is going to be gutted within a couple of years anyway. Doing the alcove now and the rest later means paying twice for demolition, twice for making good, and living with a shower specified before the room was designed.
You are being sold on the speed rather than on the scope. "Done in a day" is a real capability of panel-and-base systems fitted into a sound alcove. It stops being true, and stops being safe, the moment there is water damage behind the old surround — because the entire method depends on not having to look.
You want curbless and the floor cannot take the recess. Curbless needs depth beneath the shower floor to fall properly. Where that is not available, a low threshold is honest and a shallow fall that ponds is not.

Your options

Types of tub to shower conversion

Tub vs walk-in shower

The comparison to read before you get quotes — including what you give up.

Shower surfaces and surrounds

Acrylic, solid surface, tile and glass, by where each one belongs.

Walk-in shower layouts

What fits in the alcove you have, and where the entry ends up.

Accessible bathing decision

If the driver is mobility, start here rather than with a product.

Compare bathroom remodeling options side by side →

Before you sign

What to check when hiring for tub to shower conversion

Is the drain being moved, and is that in this price?

The item most likely to turn a fixed price into a variation. If they intend to reuse the existing drain position, ask them to confirm the base they have specified actually outlets there.
Prefab base or site-built tiled pan — and which are you quoting?

Two different products at two different prices, frequently compared as though they were the same job. Get the answer in writing before you line quotes up against each other.
How high does the tile and the waterproofing go?

A shower wets the wall much higher than a tub does. Stopping at the old surround line is a common shortcut with a slow, expensive consequence.
Is the valve being replaced, and is it pressure-balancing or thermostatic?

A tub valve and a shower valve are not the same fitting. Replacing it is the moment to solve scalding when someone flushes, and it is very cheap now versus later.
What are you doing with the floor and wall the tub was covering?

Removing a tub exposes surfaces nobody has seen. Making good is real work, it is easy to leave out of a walkthrough quote, and it is awkward to argue about afterwards.
If there is water damage behind the surround, what happens?

Especially important with fast-install systems, whose speed depends on not opening things up. Agree in advance whether the job pauses and is repriced, or proceeds regardless.
When does the glass get measured and how long does it take to arrive?

Custom glass is measured after the walls are finished. Knowing the lead time up front is the difference between a planned wait and an unpleasant surprise.

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Local pros

Tub to Shower Conversion near you

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Related work

Often done at the same time

Shower Remodel

When there is already a shower there

Bathtub Replacement

Keeping the tub and swapping it

Bathroom Tile Installation

What goes under a tiled pan

Bathroom Remodel

If the whole room is in scope

All bathroom remodeling services →

FAQ

Tub to Shower Conversion — questions people ask

Still have a question? Talk to our team →

Does converting a tub to a shower hurt resale value?

It depends entirely on how many bathrooms the house has. Removing the last tub in a family home narrows your buyer pool, because some buyers with young children will not consider a house without one. In a home with two or more bathrooms, converting the one nobody bathes in is generally neutral or positive — a well-built shower reads better than a tub used as an awkward shower tray. The question is never "tub or shower" in the abstract; it is what the rest of the house still offers.

Can a shower go in the same space the tub occupied?

Usually, and the resulting shower is often generous, because a standard tub alcove is longer than most people build a shower. The two things to settle are the drain position and the finished floor height of the base or pan relative to the bathroom floor. Some alcove widths also mean a stock base does not fit exactly, which is one of the honest reasons a site-built pan sometimes wins.

How long does a tub to shower conversion take?

A panel-and-base system fitted into a sound alcove with the drain reused can genuinely be done in one to three days. A tiled conversion with a site-built pan runs one to two weeks of working time, because the waterproofing and the setting materials have to cure between stages and the pan should be water-tested before tiling. Custom glass adds a further wait after the tiling is finished, and that wait is the part most often left out of a schedule.

What is actually different about the one-day bathroom companies?

They install an engineered system — a moulded base and wall panels — over the existing alcove, which removes the trades and the cure times that make a tiled job slow. The panels are easy to clean and have no grout, which is a real advantage. The trade-offs are equally real: it is a manufactured finish rather than a tiled one, the existing substrate is typically not removed or inspected, and this is the part of the market where in-home selling with a price that expires that evening is most common. Sound walls and a wish for speed make it a reasonable choice. Suspected water damage makes it the wrong one.

Do I need a permit for a tub to shower conversion?

Often yes, because the work usually involves altering drain and supply plumbing, and requirements vary by jurisdiction. Swapping like for like in the same position sometimes does not. Your contractor should know the local answer and pull it — and the inspection, which happens with the alcove open, is the only independent look anyone will get at the pipework and the framing before they are closed up.

Should I add a bench, a niche and a handheld while it is open?

Yes to all three, and add solid blocking in the walls for grab bars whether or not you want bars today. A niche costs almost nothing while the wall is stripped and saves a shelf hanging off the tile forever. A handheld on a slide bar makes the shower easier to clean and easier to use seated. Blocking is the cheapest item in the whole project and the only one that is genuinely impossible to add later without reopening the wall.