Walk-in Shower Cost: Tub-to-Shower Kits vs a Full Remodel, Curbs, and Doors

“Mom can’t step over the side of the tub anymore, but she doesn’t want a walk-in tub. Can we just turn the tub into a walk-in shower, and what does that cost?”

Two routes: conversion kit vs full remodel

For comparison, a walk-in tub costs $4,000–$15,000 installed (see the walk-in tub cost guide). Families pricing a bathroom change for the same reason often compare the two side by side, so ask for both quotes.

What drives the price

• Tub removal. A cast-iron tub is heavy and often has to be broken up to come out. Removal, haul-away, and wall repair are usually separate lines on the quote.
• The drain. A shower drain in the same spot as the tub drain keeps the cost down. Moving it, or switching to a linear drain, means opening the floor.
• The curb. A standard shower base has a low curb built in. A curbless (zero-threshold) shower needs the floor recessed or sloped, which is real structural and waterproofing work.
• Walls. Panels or a one-piece surround install faster than tile. Tile costs more labor but can be laid out around grab bars and a seat.
• Blocking. If the walls are open, this is the cheapest time to add solid wood blocking for grab bars and a fold-down seat. See the grab bar installation guide.
• Valve and fixtures. A handheld shower on a slide bar and an easy-to-reach valve are common choices for a seated shower.

Door and curb options

• Curtain on a low curb. It costs the least and leaves the widest opening. A weighted curtain helps keep water in.
• Swinging glass door. It needs clearance to swing out into the bathroom. Check that it won’t hit the toilet or vanity.
• Sliding glass doors. They need no swing space, but the bottom track is one more thing to step over and clean.
• Fixed glass panel, no door. It’s an open entry with a single splash panel. This works best with a curbless floor and enough room for the water to stay in.
• Curbless (zero-threshold) entry. There’s no step at all, so a shower chair or rolling chair can roll in. It has the highest build cost, and it needs careful floor sloping so the water goes to the drain.

Whichever route you choose, ask each installer for an itemized quote that lists removal, plumbing, the base or floor, walls, the door, and blocking as separate lines.

Medicare and shower conversions

Original Medicare generally does not cover home modifications such as walk-in tubs or stair lifts. A tub-to-shower conversion is a home modification. Some Medicare Advantage plans and state Medicaid waiver programs have offered home-modification help, but that varies by plan and by state, so ask the plan or program directly. This site is not affiliated with Medicare, CMS, or any government agency.

Honest Downsides

• Resale: some buyers want a tub. Many families with young children, and some buyers in general, look for at least one bathtub in a house. Converting the only tub can narrow the pool of buyers.
• The bath-only-house caveat. If this bathroom has the only tub in the home, removing it means nobody in the house can take a bath. That matters for small children, for anyone who prefers a soak, and for future owners. If there’s a second bathroom, consider keeping or adding a tub there.
• Kits fit standard sizes. Conversion kits are made for common tub footprints. An odd-sized alcove may need a custom base, which takes away much of the kit’s savings.
• Curbless showers are hard to retrofit. Getting the floor to slope correctly in an existing house can mean cutting joists or building up the rest of the floor. Some bathrooms can’t do it at a reasonable cost.
• Water on the floor. Low curbs and open entries let more water out. Plan the drain, the slope, and the splash panel carefully, and expect a bath mat outside the shower.
• In-home sales visits. Some bath-conversion companies quote only during an in-home presentation. Take the written quote, don’t sign on the spot, and compare it with another installer’s itemized bid.

Rule of thumb: if the tub’s footprint is standard and the drain can stay where it is, price a conversion kit first. Go to a full remodel when you need a curbless entry or a different layout. Before you remove the house’s only tub, think about who lives there next.

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