Tub-to-Shower Conversions: Cost, Benefits, and Resale Impact

It has been four years since you last bathed because of the dangerous stepover into the tub, dust collector, and the use of sixty square feet in a tight bathroom. What is holding you back is a vague impression that tearing out the bathtub will reduce the value of your home drastically.

This impression is largely mistaken, and where there is any truth to it, it has nothing at all to do with the bathtub. Rather, it is connected to the way bathrooms are listed. Get that single fact right, and the choice will be easy.

The cost of conversion on the Eastside, the impact it has on your resale position, and the test of three questions to determine your next move are below.

How much does a tub-to-shower conversion cost?

A tub-to-shower conversion costs $3,500 to $12,000 nationally in 2026, with prefab acrylic swaps at the low end and tiled walk-in showers at the high end. Eastside projects usually land in the upper half of that band, because King County labor rates, finish expectations, and Washington sales tax on the full contract all push the number up.

The spread is enormous because “tub-to-shower conversion” describes five different jobs.

Conversion type	What you get	Typical installed cost (Eastside)	Timeline
Tub cut	A section of the tub wall removed, low threshold added, tub stays	$1,200 – $2,500	1 day
Prefab acrylic swap	Tub out, one-piece or three-piece acrylic base and surround in	$4,500 – $8,000	3 – 5 days
Tiled walk-in, curbed	Tiled walls and pan, glass panel or door, standard curb	$8,000 – $14,000	2 – 3 weeks
Curbless / zero-entry	Recessed pan, linear drain, floor framing modified, frameless glass	$12,000 – $20,000	3 – 4 weeks
Full three-quarter bath rebuild	Conversion plus vanity, toilet, flooring, lighting, ventilation	$20,000 – $38,000	4 – 6 weeks

The line that catches people out is curbless. It reads on a plan as a design choice and behaves on site as a framing job. To get a zero-entry floor you have to drop the subfloor between the joists or build the rest of the bathroom up to meet it, and in a 1970s Eastside rambler on a crawlspace that is a different trade, a different inspection, and a different number. Decide on curbless before anyone quotes, not after.

Two costs sit outside the fixture budget and surprise almost everyone:

Washington charges retail sales tax on the whole contract, labor included. In most states you pay tax on materials only. Here, residential remodeling is treated as a retail sale, so the combined rate (around 10.3% in Bellevue in 2026) applies to the full invoice. On a $12,000 conversion that is roughly $1,240 that does not appear in any national cost calculator.
What is behind the tub? Cast iron tubs in Eastside homes built before 1985 frequently sit on subfloor that has been quietly wet for a decade. Galvanized supply lines, rotted framing at the wet wall, and no blocking anywhere in the stud bays are the three most common discoveries. Budget a 10% to 15% contingency and you will usually not need all of it.

Ask for the waterproofing system by name in writing. A tiled shower fails at the pan and the corners, not at the tile, and the difference between a sheet membrane like Schluter-Kerdi and a bucket of liquid membrane applied thin on a Friday afternoon is the difference between twenty years and four.

What you actually gain, beyond the look of it

Usable floor area. A standard 60-inch alcove tub gives up its footprint to a 60-inch shower, so you gain nothing in square footage and everything in perceived space. Take the tub out of a 36-inch-deep alcove and swap in a shower with a glass panel instead of a curtain and the room reads two feet wider than it measures.

Safety that arrives before you need it. Stepping over a 15-inch tub wall onto wet acrylic is the most dangerous thing most people do in their own home. A curbless or low-curb shower removes that step permanently. The move that matters here is cheap and invisible: have blocking installed in the walls for grab bars during framing, even if you have no intention of mounting grab bars now. It costs almost nothing while the walls are open and it is a small demolition project later.

Less moisture, which matters more here than almost anywhere. Pacific Northwest bathrooms run humid eight months of the year. A tub and curtain traps water against the wall and the floor; a properly detailed shower with a glass enclosure and a correctly sized exhaust fan moves it out. If you have already found dark growth at the base of the tub surround, treat that as its own job before anyone installs tile over it. Sealing a wet cavity behind a new shower is the single most expensive mistake available in this category, and it is why black mold remediation sometimes has to come first.

A bathroom that matches how the market actually bathes. Buyers who want a spa shower are no longer a niche, and a well-built walk-in shower photographs far better than a builder-grade tub surround.

Does removal of the bathtub affect the resale value?

Removal of a bathtub does not mean that you have decreased the value of your property. You have altered the classification of the bathroom in the house. If a bathroom has only a shower but no bathtub, then it is a three-quarter bathroom, not a full bathroom, and hence, if it was a 2.5 bathrooms home earlier, now it is a 2.25 bathrooms property. Having one bathtub in any part of the house makes it neutral or even more valuable.

This is the entire process, and this needs to be understood because this is what everyone misses in their articles.

In a full bathroom, you have four items, a toilet, a sink, a shower, and a bathtub. Now, remove any of them and it becomes a three-quarter bathroom, worth 0.75. The Northwest MLS uses such classification publicly, which is why houses in Eastside are offered as 1.75 or 2.25 bathrooms instead of rounding off to 2 bathrooms. While searching for “2+ bathrooms” on portals, you will find a house that has 2.25 bathrooms. However, a family with toddlers will not be able to see the house without the tub.

So the risk is not an appraised value. Appraisers care about fixture count, condition, and comparable sales, and a well-built tiled shower supports value at least as well as the tired tub it replaced. The risk is a buyer pool. And the buyer pool only shrinks meaningfully when you remove the last tub in the house.

The Last Tub Test

Three questions. Answer them honestly and the decision resolves itself.

After this conversion, does the house still have at least one bathtub? If yes, stop here. Convert it. The resale conversation is over, and industry guidance is consistent on this point: converting a secondary or primary bath while retaining a tub elsewhere is neutral to positive. If not, keep going.
Is this a three-bedroom-or-larger house in a school-driven neighborhood? Somerset, Newport, Lake Hills, Education Hill, most of Sammamish. If yes, your most likely buyer is a family with young children, and you are about to remove the fixture they use to bathe them. If it is a two-bedroom, a townhome, a condo, or a downsizer-oriented property, this concern largely disappears.
Are you selling within three years? Under three years, the tub decision is a marketing decision and you should weigh the buyer pool heavily. Beyond three years, it is a lifestyle decision, you will get roughly a thousand more showers out of it, and the next remodeling cycle will have come and gone before the house is listed.

Two or more answers pointing to risk? Convert a different bathroom, or convert this one and add a compact 54-inch or 60-inch soaking tub to the hall bath while the plumbing is already open. That second option costs less than most people assume when the walls are already down.

Which bathroom you convert changes the answer

Bathroom	Conversion is the right call when	Resale effect if it was the only tub
Primary / en suite	A hall bath tub remains, and buyers here expect a large shower	Low risk. Primary suites without tubs are common in newer builds
Hall or guest bath	You have a tub in the primary suite	Highest risk. This is the bath family buyers inspect first
Basement or ADU bath	Almost always, tubs down here go unused for decades	Negligible. Rarely the fixture a buyer evaluates
The only bathroom	Rarely. A single-bath home should keep its tub	High. This one genuinely narrows your buyer pool

The pattern in that table is consistent enough to act on: the bathroom a buyer emotionally evaluates is the one where the tub earns its keep. Everywhere else, an unused tub is dead space you are paying property tax on.

Do you need a permit for a tub-to-shower conversion on the Eastside?

Eastside cities require a plumbing permit when a tub-to-shower conversion moves the drain, changes supply lines beyond a like-for-like swap, or alters framing. A straight swap that keeps the drain in place often does not. Bellevue, Kirkland, Redmond, Issaquah, and Sammamish all take applications through MyBuildingPermit.com, so confirm with your city before demolition starts.

Where it gets specific:

Drain relocation triggers a plumbing permit everywhere on the Eastside. A tub drain and a shower drain do not sit in the same place, so most tiled conversions involve moving it, and most therefore need the permit.
Curbless designs usually add a framing review, because dropping the subfloor is a structural alteration.
Heated floors, a relocated fan, or a new circuit require an electrical permit, and in Washington electrical permits and inspections run through Labor & Industries rather than the city.
Shower pan replacement in Bellevue is described by some local sources as an exception to the like-for-like rule that always requires a permit.

The reason this matters is not the fine. Unpermitted bathroom work discovered during a home inspection turns into a price reduction, a repair credit, or in the worst case an order to open the walls back up for inspection. A permit on a conversion costs a few hundred dollars and a couple of weeks of calendar time. Discovering the missing one at closing costs considerably more.

How to spec the conversion so it holds its value

Six decisions separate a conversion that ages well from one that dates in five years:

Use the full tub footprint. If the alcove is 60 inches, build a 60-inch shower. Shrinking to a 48-inch stall to save a few hundred dollars leaves a dead strip of floor and reads as cheap to every buyer who walks in.
Put blocking in the walls for grab bars. Two-by-ten backing at 33 to 36 inches on the long wall and the control wall. It is an hour of carpentry now.
Size the exhaust fan properly and vent it outside. Aim for a minimum of 50 CFM for a small bath and confirm the duct terminates through the roof or wall, not into the attic. Humidity-sensing models run themselves, which matters because nobody remembers to.
Choose glass over a curtain. A clear panel is the single change that makes the room look larger, and it is what buyers photograph.
Build in a niche and, if the footprint allows, a bench. A recessed niche costs almost nothing during framing and removes the plastic caddy hanging from the shower head.
Keep the tile ordinary and the fixtures interesting. Large-format porcelain in a neutral tone will look current in a decade. A strongly patterned feature wall will not, and it is far more expensive to change than a shower head.

The conversion that fails at resale is almost never the one that costs too little. It is the one that was specified for a magazine rather than for a house. Match the finish level to your street, not to your Pinterest board.

If the conversion turns into a full room rebuild once the walls are open, and it often does, scope it that way from the start rather than discovering it at week two. That is a normal conversation to have at the estimate stage with anyone doing bathroom remodeling in Bellevue or across the wider Eastside.

Actions to take to get started

Do an audit of your house and count the number of tubs you have. If it comes up to two or more, schedule for the estimate and stop thinking about resale because classification is not a problem for you anymore.

In case the answer is one, conduct The Last Tub Test on all three questions mentioned above before quoting from any contractor. You should then settle on which bathroom you want to install a shower. Get the shower pan detail, waterproofing and permit responsibility included in the estimate and not on a doorstep.

Two issues to clear before signing any document; which bathroom and who will pull the permit. In case you are still deciding between different bidders, the questions you need to ask before hiring a general contractor will guide you through the verification process in the state of Washington.

J Hanby LLC has been doing tub conversions all over Bellevue, Kirkland, Redmond, Issaquah, Bothell, Woodinville, Sammamish, and Edmonds for more than twenty-five years. You can reach us at (425) 244-4307 for a free estimate, or go for home remodeling services in case the bathroom is one aspect of your project.