The original alcove tub in a North Shore primary bathroom is one of the most common things homeowners want to change and one of the least often used fixtures left in the house. Most people climb over it twice a year to clean it, step around it every morning, and look at it for two decades before doing anything about it. The honest question is rarely “should I keep my bathtub?” It is “is now the right time to convert this tub into the walk-in shower I have actually wanted for years, and what will the room look like when we do?”
This article walks through when a tub-to-shower conversion is the right call, what it actually involves, how the room changes around it, and how to plan the project so the result is a bathroom you will keep using comfortably for the next 15 to 20 years.
Why Are North Shore Homeowners Swapping Tubs for Showers?
The story behind this trend in Northbrook, Glenview, Highland Park, and Glencoe is not that nobody bathes anymore. Plenty of homes still keep one soaking tub on the main floor or in a guest bath. The shift is happening in primary bathrooms, where the dated 1990s alcove tub-and-shower combination has become a daily friction point. Stepping over a 16-inch ledge first thing in the morning gets old, the surround tile is cracking, the sliding glass doors collect mildew where they meet the track, and the visual footprint of an unused tub eats up the space that could be a real shower.
The other factor is how primary bathrooms now read in the resale market. North Shore buyers walking through a $1.2M+ home expect a spa-style primary bath. A separate shower with multiple heads, a frameless glass enclosure, and a clean tile package is on almost every wish list. A 30-year-old fiberglass tub-shower combo is the opposite signal. You can see that decision play out across completed bathroom transformations across the North Shore, where the most-requested change is consistently swapping the unused primary-bath tub for a generous walk-in shower.
Aging in Place Without Looking Like It
The third reason homeowners pull the trigger is long-term safety. Climbing in and out of a tub becomes the largest fall risk in the house once you cross 60. A curbless or low-curb walk-in shower with a built-in bench and a handheld wand removes that risk entirely without making the bathroom feel medical. Done well, the design reads as luxury, not as accessibility. That balance, a beautiful primary bath that is also the room you can still use comfortably in 15 years, is the most common reason North Shore homeowners over 50 are converting now rather than later.
When Does a Tub-to-Shower Conversion Actually Make Sense?
The conversion makes sense when three conditions are true: the existing tub is rarely used, the bathroom has at least one other tub elsewhere in the house, and the layout of the room can comfortably hold a shower that is at least 36 by 48 inches without crowding the toilet or vanity. If all three are true, the conversion is almost always the right call and usually returns more than its cost at resale because it brings the room in line with current buyer expectations.
It does not make sense if your house has only one tub and you have young children, if your home’s primary bathroom is so small that pulling out the tub will not leave enough room for a real shower with proper clearances, or if your local resale comp shows that comparable homes still have tubs in the primary bath. In those cases, refreshing the existing tub-shower combo with new tile, a frameless enclosure, and updated fixtures is usually a better return on the spend than a full conversion.
Between those two clear answers is the gray zone most homeowners actually live in. The right move there is to plan the project as part of a professional bathroom remodel rather than treating it as a tub swap. Plumbing relocations, waterproofing, tile substrate, glass spec, and ventilation upgrades are all easier to budget and sequence when the room is being designed as a whole, not just patched around the new shower footprint.
What Tells You the Tub Has To Go
A few signals make the decision obvious. The tub has not held water for an actual bath in more than a year. The surround grout is cracking in more than one spot, suggesting the substrate behind it has movement or moisture. The faucet drips even after a cartridge replacement, which usually points to mineral damage in the valve body. The flooring under the tub apron is soft or warped. Any one of these alone is fixable. Two or three together mean you are about to spend serious money repairing a fixture you do not actually use, which is exactly the moment the conversion math starts working in your favor.
What Does a Quality Walk-In Shower Conversion Include?
A quality tub-to-shower conversion is not a kit. It is a small structural remodel of the wet area, sequenced like any other custom build. The steps are the same in almost every North Shore project we work on, even when the cosmetic finishes are very different.
First, the existing tub, surround tile, and any failing substrate come out. The shower drain location is moved or rebuilt because tub drains sit at one end of the alcove and shower drains usually want to be more centered, or set as a linear drain along the back or curb side. The supply lines and the rough-in valve are replaced with a new thermostatic mixing valve set to the height and offset that fits the new shower head, hand shower, and any body sprays. The subfloor under the wet zone is inspected and reinforced if any rot is visible. New pan, new waterproofing membrane on the walls (not just paper-faced cement board, but a fully waterproofed system like Kerdi or Wedi), and only then the new tile substrate goes on.
The visible build comes next: tile installation, niches framed and waterproofed before tile, a bench or curb formed if the design calls for one, frameless glass measured and ordered after tile is set so it fits the as-built opening exactly, and a high-quality vent fan rated for the room volume on a humidity-sensing switch. That order matters. The number-one reason walk-in showers fail in five years is that one of the waterproofing steps was skipped or rushed, almost always because the project was bid as a fixture swap rather than as a remodel. Understanding how a design-build project actually unfolds is what separates a conversion that lasts from one that has to be torn out again in seven years.
Curbless, Low-Curb, or Standard
The single biggest design choice inside the conversion is whether the shower will be curbless, low-curb, or have a standard 4-inch curb. Curbless looks the most contemporary, reads cleanly to the eye, and is the most accessible. It requires lowering the subfloor in the wet zone so the shower pan can slope to the drain while the finished floor stays flush with the rest of the bathroom. That is doable in most North Shore homes but adds cost and labor. A low-curb compromise (1.5 to 2 inches) gives most of the look with much less structural work. Standard 4-inch curbs are still the most cost-effective and most forgiving, and they keep more water inside the shower zone if the room’s ventilation is borderline. None of the three is wrong. The right answer depends on subfloor access, accessibility goals, and how often the rest of the bathroom needs to look perfectly clean.
How Should You Budget and Plan a Tub-to-Shower Conversion?
Quality tub-to-shower conversions in North Shore primary bathrooms typically land in the mid-five-figure range when done as part of a proper waterproofed remodel with frameless glass, full tile walls, a new vent fan, and a new mixing valve. National “one-day bathroom” advertising at a few thousand dollars is selling something completely different: a fiberglass or acrylic shell snapped over the existing rough plumbing with no real waterproofing, no tile, and no glass. Those products solve a different problem and almost always need to come out and be rebuilt properly within ten years. They are not the same project.
The biggest drivers of cost variation inside a real conversion are the tile package, the glass package, the curb decision, and how much of the existing plumbing has to move. A 6 by 8 alcove tub area being converted into a 36 by 60 shower with the existing supply lines staying roughly in place is the easy version. The same conversion in a bathroom where you want to relocate the toilet, expand into a hall closet, or add a freestanding tub elsewhere in the room is a much bigger project with a budget to match. Walking through selecting tile, fixtures, and finishes as a structured exercise before any work starts is what keeps those numbers from drifting.
Sequencing the Project Around Your Household
The other practical question is how to live in the house while the work happens. A primary bath conversion typically takes three to five weeks on site once the tile and glass are in hand, with another four to eight weeks of lead time before that for ordering and design. Most North Shore households shift to the hall bath or guest bath during the construction window, which is one of the reasons we recommend keeping at least one functioning tub elsewhere in the house. Scheduling the project for a stretch of the year when no out-of-town family is visiting and no major work travel falls inside the window saves more stress than people expect.
Frequently Asked Questions
Is replacing a bathtub with a shower a good idea?
It is a good idea when the existing tub is rarely used, when you still have another tub somewhere else in the house, and when the bathroom is large enough to hold a properly sized walk-in shower without crowding the rest of the room. In primary bathrooms where those three conditions are met, the conversion almost always improves daily use, long-term safety, and resale value. It is a poor idea when the home has only one tub and you have young children, or when the room is so small that removing the tub will still not leave space for a comfortable shower.
How much should a tub-to-shower conversion cost?
A properly built conversion with waterproofed walls, full tile, frameless glass, a new mixing valve, and a new vent fan generally lands in the mid-five-figure range in the Chicago North Shore market. The wider quote spread between contractors usually comes from differences in tile spec, glass spec, the size of the new shower, whether the curb is standard or curbless, and how much plumbing has to move. The very-low quotes you see advertised on national television are almost always for a snap-in acrylic shell, which is a different product with a much shorter useful life.
Will I lose resale value by removing the only tub in my house?
You can, depending on the market. In neighborhoods where buyers are mostly young families, having at least one bathtub somewhere in the house still matters. In neighborhoods skewing toward downsizers and empty-nesters, a beautifully done walk-in shower in the primary bath plus no other tub is fine and sometimes preferred. The safest move in mixed markets like much of the North Shore is to keep at least one functioning tub in the home, whether that is in a guest bath, a hall bath, or a kids bath, while converting the primary.
How long does a tub-to-shower conversion take?
On-site work for a quality conversion typically runs three to five weeks once materials are on hand. Order and design lead time before that adds another four to eight weeks for tile, glass, and any custom plumbing fittings. Total project window from contract to finished shower is usually two to three months. Faster timelines are almost always a sign of skipped waterproofing or a snap-in acrylic product rather than a real tile shower.
Can you put a walk-in shower where the tub used to be without moving plumbing?
Sometimes. The shower drain almost always has to be moved or rebuilt because tub drains sit at one end of the alcove while shower drains are usually centered or set as a linear drain along the back wall. The supply lines can sometimes stay close to where they were if the new shower head is at one end of the enclosure, but most quality conversions replace the rough-in valve with a new thermostatic mixing valve at the correct height for the new fixture layout. Plan for at least some plumbing work as part of any real conversion.
What is the difference between a tub-to-shower conversion and a one-day bathroom remodel?
A real conversion rebuilds the wet area: full demo, new waterproofing membrane, new tile, new glass, new valve, new vent. A one-day product fits a molded acrylic or fiberglass shell over the existing alcove with new fixtures bolted to it. The one-day product is faster and cheaper up front. It also has a shorter useful life, less design flexibility, and lower resale impact, and it typically needs to be removed and rebuilt properly inside ten years if the underlying waterproofing was not addressed. They are two different products that solve two different problems.
Do I need a permit to convert a tub to a walk-in shower in Northbrook?
In most North Shore municipalities, yes. Any project that relocates plumbing, changes the drain, or alters the rough-in valve falls inside the local plumbing code and needs a permit and inspection. Your remodeler should pull the permit and schedule the inspections as part of the job. Confirm the permit history at closing so a future buyer does not run into an open permit during their inspection.
Ready to Plan Your Tub-to-Shower Conversion?
The right answer for your bathroom depends on what is behind the tile, how the room flows, and how long you plan to live with the result. A walk-through with a designer who can read the existing plumbing, identify the realistic shower footprint, and quote the conversion as a full remodel (not a fixture swap) is the fastest way to know whether this is the right project for your home and what it will actually cost. Kitchen Design Partners works with homeowners across Northbrook and the North Shore on bathroom design-build projects of every size. Book a complimentary consultation and we will walk your bathroom with you, talk through the conversion as a real project, and give you a written quote you can compare against any other bid.