The walk-in shower has displaced the tub-shower combo as the default primary bathroom configuration in mid and upper price tiers over the past 15 years. Buyers want spa-like primary bathrooms with frameless glass and large-format tile, and the tub in the primary bathroom often gets a few uses a year while consuming significant square footage. But the tub-shower combo is not obsolete; it is the right answer in specific scenarios that the design press underemphasizes. This guide walks through the practical tradeoffs and where each configuration is the right call.
The walk-in shower case
A walk-in shower allocates 100 percent of its footprint to showering, with no compromise for bathing. The standing area is larger, the floor is uninterrupted, the entry is easier, and the design vocabulary is contemporary.
Footprint efficiency at moderate to large sizes is significantly higher than a tub-shower combo. A 36 by 60 inch walk-in shower replaces a 30 by 60 inch tub-shower combo with the same overall envelope but adds 6 inches of width inside the showering zone (because the shower wall is closer to the wall than the curved tub wall is). The user has more room to turn, bend, and use a handheld.
Aesthetic flexibility is the highest of any bathroom configuration. Frameless glass enclosures, large-format tile or slab walls, bench seats, niches, multiple shower heads, body sprays, and curbless thresholds all integrate into the walk-in shower vocabulary. The visual range from clean minimal to luxurious spa is open.
Accessibility is the strongest case. A curbless walk-in shower with a fold-down bench, grab bars, and a handheld is the aging-in-place primary bathroom configuration. Anyone with mobility limitations gets a much better daily experience from a walk-in than from stepping over a tub wall.
The disadvantages: no bathing option, family-buyer resale impact in primary bathrooms of family-target homes, and water containment that depends on careful design and execution (a poorly designed walk-in shower lets water escape onto the bathroom floor).
The tub-shower combo case
A tub-shower combo is the standard residential configuration where a bathtub serves double duty as the shower pan, with a vertical wall surround and a shower head mounted to the wall above the tub.
The tub-shower combo retains the bathing option. For households with children, this is decisive. Young children get bathed in tubs through roughly age 5 to 7. Older children move to showers but the bathing option remains useful for sick days and for unwinding. Adults occasionally bathe (10 to 30 times a year for most who have a tub) and consistently rate the option as one they value even if they use it infrequently.
Resale appeal in family-friendly markets is significant. The single-bathroom home or the primary-bathroom-as-only-tub configuration loses meaningful resale value when the tub is removed. The dollar gap is 2000 to 10000 dollars depending on market and price tier.
Cost is the lowest of bathroom water-feature configurations. A standard 60 inch alcove tub plus a fiberglass or acrylic wall surround runs 800 to 2500 dollars in materials and 1500 to 4000 dollars installed. A tile-walled tub-shower combo runs 3000 to 7000 dollars installed.
The disadvantages: the bathing zone consumes shower space, the step-over to enter is a fall risk for older users, the design vocabulary is more conventional than a walk-in shower, and the tub wall surround tile or surround inevitably looks dated faster than a walk-in shower’s full tile run.
Footprint and space requirements
A walk-in shower needs 32 by 32 inches minimum to meet code, 36 by 48 inches for a comfortable standing zone, and 36 by 60 inches to match a typical tub footprint with room to use a handheld and turn around. Larger walk-ins (48 by 60 inches and up) accommodate benches, body sprays, and multi-user use.
A tub-shower combo needs the standard 30 by 60 inch tub footprint (60 inch length is the residential standard, 54 inch and 66 inch tubs also exist) plus access space in front of the tub for stepping in. Most tub-shower alcoves match the tub envelope exactly.
A bathroom with less than 60 inches of wall length in any direction usually cannot accommodate a tub and is walk-in only. A bathroom with 60 to 72 inches of wall length can accommodate either, but a walk-in feels more spacious. A bathroom with 72 inches or more can accommodate either generously, or both (a tub in one alcove and a separate walk-in shower).
Cost differences for new builds and remodels
A new-build tub-shower combo runs 1500 to 4000 dollars for a fiberglass or acrylic alcove system, 3000 to 7000 dollars for a tile-walled combo.
A new-build walk-in shower runs 2500 to 7000 dollars for an acrylic surround on a custom shower pan, 5000 to 12000 dollars for a tile-walled walk-in with a custom mortar pan or pre-fab base.
A tub-to-walk-in conversion runs 4000 to 12000 dollars depending on materials and the extent of plumbing rework. The drain has to be relocated or replaced with a linear drain. The wall surround is replaced. The tub is demolished and hauled away.
A primary bathroom remodel that adds a separate walk-in shower alongside a retained or upgraded tub runs 12000 to 30000 dollars depending on materials. This is the resale-optimal configuration when the bathroom has the footprint for it.
Aging-in-place considerations
Anyone who plans to stay in their home into their 70s and 80s benefits from at least one curbless walk-in shower with grab bar blocking in the walls and a fold-down or built-in bench. The primary bathroom is the natural location for this.
A tub remains useful for some aging-in-place users (warm bathing helps arthritis), but the step-over of a standard tub becomes a fall risk past a certain age. Walk-in tubs (the door-sealed type) are the solution that retains both the bath and the step-in safety, at a cost of 5000 to 15000 dollars installed.
For homeowners over 55 planning a long-term remodel, prioritize the walk-in shower configuration with accessibility features in the primary bathroom. The investment outlasts the renovation by 20 to 30 years.
Picking for your bathroom
For a primary bathroom in a multi-bathroom home where another bathroom has a tub, install a generous walk-in shower with curb or curbless threshold, frameless glass, and a bench. This is the resale-optimal and use-optimal configuration.
For a primary bathroom in a single-bathroom home or where the primary bathroom is the only tub location, keep the tub. A tub-shower combo in the primary plus a walk-in shower elsewhere is the family-buyer optimal layout if the home has room.
For a guest or secondary bathroom in a family-friendly market, keep a tub-shower combo. The resale appeal compounds across bathrooms.
For aging-in-place primary bathroom remodels at any home configuration, install a curbless walk-in shower with grab bar blocking and a bench. Retain a tub elsewhere if the home has space.
For deeper planning see our shower tile guide and our bathroom flooring guide. Methodology at /methodology.
Frequently asked questions
Will removing my only bathtub hurt the resale value of my home?+
Yes, in most family-friendly markets, by 2000 to 10000 dollars on the appraised value. The convention is that a single-family home needs at least one bathtub for households with young children, and homes without a tub get filtered out of family-buyer searches. The exception is downsizer markets, retirement communities, and high-end urban condos where a tub is not expected. If your home has two or more bathrooms and at least one tub remains, removing a tub from one bathroom to install a walk-in shower has no resale penalty and often adds value. If your home has only one bathroom and one tub, removing it is a resale liability.
How much space does a walk-in shower actually need?+
32 by 32 inches is the absolute minimum that meets code (some jurisdictions allow 30 by 30 inches but the experience is cramped). 36 by 48 inches is the comfortable minimum where the user has room to turn and bend without hitting walls. 36 by 60 inches matches the standard tub footprint and is the most common walk-in replacement size when converting an existing tub alcove. 48 by 60 inches and larger enters the spacious zone and supports a bench, multiple shower heads, or two users. Plan for at least 36 inches of width in any direction to feel like a real shower.
Is a curbless walk-in shower worth the install premium?+
For aging-in-place primary bathrooms, yes. For young-buyer-target houses, often not. A curbless shower (zero-threshold, the floor of the shower flush with the bathroom floor) requires the subfloor to be lowered in the shower area, a linear drain instead of a center drain, and meticulous waterproofing to keep water in the shower zone. The install premium is roughly 1500 to 4000 dollars over a curbed walk-in. The aesthetic and accessibility benefits are real. The complexity of the install means it has to be done by a contractor who has built curbless showers before. Skip the curbless if your contractor has not.
Can a walk-in shower replace a tub in the same footprint?+
Yes, this is the most common bathroom remodel of the past decade. A standard 30 by 60 inch tub alcove converts to a 30 by 60 inch walk-in shower with minimal plumbing changes (the shower drain moves from one end of the alcove to the middle or to a linear drain at one end, and the tub spout is removed). The shower wall surrounds are different from tub wall surrounds (a shower needs floor-to-ceiling waterproofing and a sloped floor). Cost runs 4000 to 12000 dollars for a tub-to-shower conversion depending on materials and finish level.
Do tub-shower combos still make sense for adults without kids?+
For a primary bathroom in a multi-bathroom home, often not, the daily routine is showers and the tub gets used a handful of times per year if that. The space is better allocated to a generous walk-in shower. For a guest bathroom or a secondary bathroom in the same home, retaining the tub-shower combo preserves the family-buyer resale appeal and adds the optional bathing capacity. The household that already has young children or that hosts grandchildren regularly benefits from at least one tub in the home, ideally in the primary or a shared bathroom rather than only in a guest bath.
Riley Cooper
Riley Cooper writes for The Tested Hub.