Yes, and in most Los Angeles bathrooms it is the single cheapest thing you can add to a shower that you will still be glad of in twenty years. A built-in seat costs almost nothing as a line item once the shower is already being framed, waterproofed and tiled — the money is in the shower, not the bench. What it does cost you is floor area, and that is where seats go wrong. California requires a shower compartment to hold a minimum finished interior of 1,024 square inches and to encompass a 30-inch circle, and a permanent bench sits inside that footprint, not outside it. A seat belongs in the drawing from the first sketch, at 17 to 19 inches high and 15 to 16 inches deep, sloped to the drain, on a wall that can carry it. Retrofitted into a shower already sized to the minimum, it either shrinks the shower below code or ends up too shallow to sit on.
We are Green Design and Build, a licensed residential general contractor based in Van Nuys (CSLB #1110975), working across Los Angeles, Orange, Ventura and the western edges of Riverside and San Bernardino counties. We build tiled showers with benches most weeks of the year. The figures below are budgeting ranges, not a quote — the price of your shower depends on your room, your foundation and your tile, and the only honest number comes from a site visit.
The five kinds of shower seat, and who each one suits
"Shower seat" covers five quite different things. They are not interchangeable, and picking the wrong one is the most common regret we hear about.
| Type | What it is | Best for | The catch |
|---|---|---|---|
| Full-width tiled bench | A framed bench, usually 15–16 in deep, running wall to wall at one end of the shower | Larger showers; anyone who wants to sit properly, shave, or transfer sideways from a wheelchair | Eats the most floor area. Needs the shower designed around it. |
| Corner tiled bench | A triangular or L-shaped bench in one corner | Standard 36 × 60 in showers where a full bench would not fit | The usable seat is smaller than it looks; the point of the triangle is unusable. |
| Floating (cantilevered) bench | A tiled bench with no legs, carried entirely by framing in the wall | Small showers — the open floor underneath keeps the room reading larger and makes the floor easier to clean | Entirely dependent on the wall framing. Cannot be added later to a finished wall. |
| Fold-down seat | A hinged teak or phenolic seat mounted to the wall, folded flat when not in use | Small showers, and households where only one person needs to sit | Needs solid blocking behind the tile. Whether a plan checker counts it against your required floor area is a question for your building department. |
| Free-standing teak stool | A movable bench or stool, bought rather than built | Anyone wanting to try sitting before committing; renters; showers already finished | Moves underfoot when wet. No permanent support to lean on. |
If you are still deciding on the shower itself rather than the seat, start with our guide to walk-in and doorless shower sizes, layouts and rules, which covers the compartment dimensions, curbless construction and glass in more depth than this page does.
The dimensions that actually work
There is no building code in California that tells you how big a shower seat in a private house must be. The numbers everyone quotes come from the federal accessibility standards, which govern public buildings and commercial facilities — not your house. That is worth saying plainly, because a lot of remodeling advice implies the ADA applies to single-family homes. It does not.
What those standards are genuinely good for is as a benchmark. They were dimensioned around people who need to sit, and they are the closest thing the industry has to a tested set of figures. From the U.S. Access Board’s guidance on bathing rooms:
| Element | Federal accessibility benchmark |
|---|---|
| Seat height | 17 to 19 in, measured to the bathroom finish floor |
| Rectangular seat depth | 15 to 16 in from the seat wall |
| Rectangular seat length | Extends to within 3 in of the compartment entry |
| L-shaped seat | Rear edge 1½ in from the wall; front edge 14 to 15 in from the wall; the L-end 22 to 23 in from the main seat wall |
| Transfer shower compartment | 36 × 36 in, an absolute dimension rather than a minimum |
| Standard roll-in compartment | 60 in wide minimum × 30 in deep minimum |
| Threshold | ½ in maximum, beveled above ¼ in |
| Grab bars | 33 to 36 in above the floor, 1½ in clear of the wall |
| Structural strength | 250 lb applied at any point on the bar, fastener, mounting device or supporting structure |
Two of these matter more than the rest in an ordinary remodel. Seat height is the one people get wrong by building to the height of a dining chair — a shower seat at 17 to 19 inches is deliberately a little low, because you have to be able to get back up off it with wet feet. And depth: below about 15 inches a bench stops being somewhere to sit and becomes somewhere to put a leg while shaving. Both are perfectly legitimate purposes. Decide which one you are building before the framing goes in, because they are different benches.
A bench takes floor area that the code counts
This is the constraint that catches people, and almost nothing written about shower seats mentions it.
Under the California Plumbing Code, a shower compartment must have a minimum finished interior area of 1,024 square inches and must be capable of encompassing a 30-inch circle (California Plumbing Code section 408.7 in the 2025 edition; numbered 408.6 in earlier editions). Orange County Public Works states it in exactly those terms in its residential bathroom remodel handout, and every plan checker in Southern California applies the same rule.
A permanent bench is built inside that compartment. It is not bonus space bolted to the outside. So on a common 36 × 60 inch shower — 2,160 square inches — a 16-inch-deep bench across the 36-inch end removes 576 square inches, leaving 1,584. That still clears 1,024, but the 30-inch circle is now the binding test, and in a 36-inch-wide compartment with a 16-inch bench you have 44 inches of clear length left, which holds the circle comfortably. Shrink the shower to 32 inches wide and the same bench no longer works.
The practical rule: draw the bench and the 30-inch circle on the same plan before you order anything. If your shower is already at or near the minimum, a full-depth bench means enlarging the compartment, and enlarging the compartment usually means moving a wall — which is a different project with a different price. A fold-down seat is the usual way out of that corner, though whether your plan checker treats a folding seat as an encroachment on the required area is a question to put to your building department rather than to the internet; the answer is not uniform.
Where a bench can physically go
A tiled bench is a small piece of construction, not a fitting. Three things decide where it can sit:
- Framing. A floating bench transfers everything it carries into the studs. That means blocking installed before the substrate goes on, sized for an adult sitting down hard rather than lowering themselves gently. Once the wall is closed and tiled, a cantilevered bench is no longer an option.
- The wet wall. Benches want to be away from the showerhead, so you sit down dry and reach the spray rather than sitting under it. In a 60-inch shower that usually means the bench at one end and the valve at the other.
- The door swing and the glass. A bench under a hinged door is a shin injury waiting to happen, and frameless panels need a clean, plumb line to land on. Benches and glass have to be coordinated at the design stage; the glass is measured after tiling and cannot adapt to a surprise.
Waterproofing the bench is the whole ballgame
Benches leak more often than shower floors do, for a simple reason: a bench is a horizontal surface with corners, seams and fasteners in the wettest part of the room. Get this right and a bench is permanent. Get it wrong and it is a planter for mold inside the wall.
Three requirements, taken from manufacturer installation documentation rather than from habit. Schluter’s shower system installation handbook is explicit on all three:
- The top has to slope to the drain. The handbook’s wording is that all horizontal surfaces — benches, curbs, window sills, shelves — must be sloped toward the shower drain. Note what it does not do: publish a slope rate for a bench top. It publishes one for the shower floor (¼ inch per 12 inches of mortar bed) and none for benches. Anyone who quotes you a bench slope figure is quoting a shop habit, not a specification. What matters is that water runs off rather than sitting.
- The waterproofing runs across it, unbroken. Not up to the bench and restarting on the other side — across, with preformed corners at the inside and outside angles where a folded sheet cannot lie flat.
- Every seam and every fastener penetration gets treated. The handbook calls for banding with a 2-inch overlap. Each screw through a bench substrate is a hole through your waterproofing.
One more that is not in any manual: mix systems at your peril. A bench built from one manufacturer’s board, banded with another’s tape and bonded with a third’s membrane is not warranted by any of them. Ask which system your shower is being built in, and ask that every component inside the wet area belongs to it.
Materials: what to sit on
| Bench surface | How it behaves | Maintenance |
|---|---|---|
| Tile matching the walls | Visually quietest — the bench disappears into the shower | Grout joints on a horizontal wet surface; sealing and occasional regrouting |
| Single slab of stone or quartz | No grout joints at all on the seat itself; the usual upgrade | Natural stone needs sealing; quartz does not. One joint at the wall to maintain |
| Large-format porcelain slab | Stone look, no sealing, no joints across the seat | Lowest of the three. Fabrication has to be right — big pieces are unforgiving |
| Teak on a tiled base | Warm to sit on, which matters more than people expect | Needs to dry between uses; oiling once or twice a year |
The temperature point is underrated. Tile and stone at 6am in a Valley house in January are cold, and a seat you flinch from is a seat you stop using. A slab bench with a teak insert, or simply a teak bath mat kept on the bench, solves it for very little money.
You can see large-format tile, linear drains and a tiled bench and niche in the same room on our Diamond Bar bathroom remodels project page, and more tile and glass detailing across our West Hollywood bathroom and Inglewood primary bathroom.
What a walk-in shower with a seat costs in Los Angeles
Direct answer: the seat is not what you are paying for. A tiled bench inside a shower that is already being demolished, framed, waterproofed and tiled adds framing, a little substrate, a little more waterproofing and a few more square feet of tile. It does not appear as a meaningful line on an estimate, and we do not price it as one. What you are paying for is the shower, and the shower lands in one of three tiers.
| Scope | Typical Los Angeles range | What the bench looks like at this level |
|---|---|---|
| Basic refresh — prefab pan and surround dropped into the existing footprint, drain left in place | $8,000–$18,000 | A molded seat in the prefab unit, or a fold-down seat on blocking. No tiled bench. |
| Mid-range — tiled, waterproofed shower, frameless glass, new exhaust, some layout change | $18,000–$40,000 | A tiled corner or full-width bench, designed in. The normal case. |
| High-end — curbless, fully tiled, drain relocated, heated floor, stone | $40,000–$80,000+ | A floating slab-topped bench, coordinated with a linear drain and frameless glass. |
These are the same ranges we publish in our bathroom remodel cost guide and our tub-to-shower conversion cost guide, because a shower with a seat is not a separate category of job. The line items that actually move the number:
| Line item | Typical range | Why it moves |
|---|---|---|
| Prefab shower pan | $500–$2,500 | Size, material and whether it is a stock footprint |
| Relocating the drain — raised foundation | $2,500–$6,000 | Access from below; how far the trap has to move |
| Relocating the drain — slab | $5,000–$12,000+ | Cutting, trenching and re-pouring concrete |
| Frameless glass | $1,000–$3,000 | Panel count, height, hardware finish |
| Tile | $12–$25 per sq ft installed | Tile size and layout; large-format costs more to set flat |
Adding a bench to a shower you were not otherwise rebuilding is a different proposition, and usually a poor one. You cannot bond a bench onto finished tile and call it waterproof; doing it properly means opening the wall, which means retiling, which means you are doing the shower anyway. If the shower is sound and you simply need somewhere to sit, buy a teak stool and spend the money elsewhere. Budgeting ranges throughout, not quotes — and financing options are available if the timing is awkward.
The aging-in-place case, with the actual numbers
Most articles on this topic gesture at safety. Here is what the federal data says. Analyzing a year of U.S. emergency-department records for people aged 15 and over, CDC researchers counted an estimated 234,094 nonfatal bathroom injuries. Falls caused 81.1% of them, and 68.3% happened in or around the tub or shower — by a wide margin the most dangerous place in the room. The injury rate climbed from 58.8 per 100,000 among 15- to 24-year-olds to 515.3 per 100,000 among people aged 85 and older. The study drew on 2008 data and remains the standard national count; the full report is published in CDC’s MMWR. The shower is only one room, though: for entries, doorways, kitchens, lighting and a ground-floor bedroom, see our aging-in-place remodeling checklist for the whole house.
What follows from that, practically:
- A seat is only half of it. The risk is in transitions — stepping in, standing up, turning around. A seat plus a grab bar plus a handheld on a slide bar addresses the transitions; a seat alone addresses one of them.
- Put blocking in for grab bars now, even if you do not want bars yet. Plywood backing across the shower walls during framing costs almost nothing and means a bar can be fitted anywhere, any time, without opening tile. This is the single highest-value thing you can do in a bathroom remodel you may want to age in.
- Towel bars are not grab bars. A grab bar and its fixings are designed for a 250 lb load applied in any direction. A towel bar is designed for a towel.
- Slip resistance is a tile decision. A small-format floor tile with more grout joints gives more grip than a polished large-format one. The bench matters here too — a polished stone seat is slippery when soapy.
Will Medicare or insurance pay for it?
No, and it is worth knowing before you plan around it. Medicare’s national coverage determination for durable medical equipment — the CMS DME Reference List — lists these items individually and denies each one:
- Bathtub seats — denied as a "comfort or convenience item; hygienic equipment; not primarily medical in nature"
- Bathtub lifts — denied as a "convenience item; not primarily medical in nature"
- Grab bars — denied as a "self-help device; not primarily medical in nature"
- Raised toilet seats — denied as a "convenience item; hygienic equipment"
A built-in shower bench, being part of the building rather than equipment at all, is further outside the definition still. Original Medicare does not pay for home modifications. Some Medicare Advantage plans and some state or veterans’ programs do offer home-safety benefits, and those vary by plan, by year and by county — check your own plan documents rather than a contractor’s website, including ours. We are contractors, not benefits advisors, and we will not tell you a job is covered.
Common mistakes we get called in to fix
- The bench that was decided on after framing. Added once the walls were closed, so it sits on legs rather than floating, and the shower floor is now awkward to clean around.
- A flat bench top. Water pools, sits in the grout joints, and the front edge of the seat discolors within a year. No slope, no drainage, no exceptions.
- A bench where the shower needed the floor. A full-depth bench in a compartment already at the minimum leaves a shower you shuffle sideways in.
- The niche directly above the bench. Convenient, and it means the two most penetrated details in the shower stack vertically in the same plane of waterproofing. It can be done properly; it frequently is not.
- Fold-down seat into tile and nothing else. Anchors in tile and backer board with no blocking behind them. It holds, until the day it matters.
- Bench built, exhaust fan left alone. More tiled surface and more standing water in the same room, moved by the same undersized fan. See the ventilation section of our walk-in shower guide.
Permits, and what a plan checker looks at
The bench itself is not what triggers a permit — the shower is. Rebuilding a shower involves plumbing, waterproofing and usually electrical, and in Los Angeles that is permitted work. Because the bench changes the compartment’s clear floor area, it is one of the things a plan checker will measure, which is a further reason to have it on the drawing rather than adding it on site.
We cover the process, the inspections and what the city actually asks for in our guide to bathroom remodel permits in Los Angeles. The sequencing — demolition, rough plumbing, inspection, waterproofing, tile, glass — is set out in the order of a bathroom remodel, and the bench is built during the framing and waterproofing stages, well before anything looks like a bathroom.
What to ask before you sign
- Show me the shower on a plan with the bench drawn and the 30-inch circle marked.
- What height and depth is the bench, and is it built for sitting or for a raised leg?
- Which waterproofing system is the shower built in, and does every component inside the wet area belong to it?
- How is the bench top sloped, and where does that water go?
- Is the bench floating or supported, and what blocking is going into the wall?
- Are you putting plywood backing in for future grab bars while the walls are open?
- Is the glass measured after tiling, and who is responsible if it does not fit around the bench?
- What is the tile allowance, stated in dollars per square foot rather than as a grade?
Ask for the license number and check it on the California Contractors State License Board site. Ours is CSLB #1110975. More about how we work is on our about page, and our customer reviews are public.
Where we build walk-in showers with seats
We work across Los Angeles County, Orange County, Ventura County and the western parts of Riverside and San Bernardino counties, on residential projects only. Locally that includes Van Nuys, Sherman Oaks and Woodland Hills, and the wider bathroom remodeling service covers the rest. Recent work is on our projects page — including the Ontario hall bathroom and an Irvine bathroom built around a freestanding tub — and tile and fixture combinations we have used are collected in our bathroom design ideas.
Much of the San Fernando Valley housing stock we work on is 1950s to 1970s, on raised foundations with original cast-iron waste lines. That matters for a bench project in one specific way: raised-foundation access makes relocating a drain markedly cheaper than cutting a slab, which widens what is affordable when the shower has to grow to fit a seat.
Walk-in shower with seat FAQs
How much does a walk-in shower with a seat cost?
In Los Angeles, $18,000 to $40,000 for a mid-range tiled, waterproofed walk-in shower with frameless glass and a built-in bench. A basic prefab shower with a molded or fold-down seat can land in the $8,000 to $18,000 refresh tier, and a curbless, fully tiled shower with a relocated drain and a slab-topped floating bench runs $40,000 to $80,000 or more. The seat itself is not a separate line item of any size — the shower is what you are buying. These are budgeting ranges, not quotes.
Will Medicare pay for a walk-in shower or a shower seat?
No. The CMS durable medical equipment reference list denies bathtub seats as a comfort, convenience and hygienic item not primarily medical in nature, and denies grab bars as a self-help device on the same grounds. Original Medicare does not cover home modifications at all, and a built-in bench is part of the building rather than equipment. Some Medicare Advantage plans and some veterans’ or state programs offer home-safety benefits, but these vary by plan and county — check your own plan documents.
Is a seat in a shower a good idea?
In a shower large enough to take one without dropping below the required floor area, yes. It costs very little inside a shower you are already building, it is useful daily for shaving and washing feet, and it is the difference between a bathroom you can stay in and one you cannot as mobility changes. In a compartment already at the code minimum it is a poor trade — you lose usable standing room for a seat you may rarely use. Size decides it, not preference.
How high should a shower seat be?
17 to 19 inches above the finished shower floor. That is the federal accessibility benchmark for public buildings, measured to the bathroom finish floor, and it works well in a house. It is deliberately a little lower than a dining chair, because you have to be able to stand back up from it with wet feet. Build to the finished height, remembering that tile and setting bed add to whatever the framing measures.
How deep should a shower bench be?
15 to 16 inches from the seat wall if it is meant for sitting — the accessibility benchmark for a rectangular seat. Below about 15 inches you have a ledge rather than a seat: fine for resting a leg while shaving, uncomfortable to sit on properly. Decide which one you want before framing, because the two are different benches and the shallower one is chosen by accident far more often than on purpose.
Does a built-in bench make my shower too small for code?
It can. California requires a shower compartment to have a minimum finished interior area of 1,024 square inches and to encompass a 30-inch circle, and a permanent bench sits inside that area rather than outside it. A 16-inch bench across the end of a 36 by 60 inch shower still clears both tests; the same bench in a smaller compartment may not. Have the bench and the 30-inch circle drawn on the plan before anything is ordered, and confirm the treatment of a fold-down seat with your building department.
Can you add a bench to an existing shower without retiling?
Not a built-in one, properly. A tiled bench has to be tied into continuous waterproofing, which means opening the wall and the floor junction, which means retiling. A bench bonded onto finished tile has no waterproofing continuity and will eventually put water behind the wall. The two honest options for a shower you are not rebuilding are a fold-down seat anchored into blocking — which still means opening tile to add blocking if none exists — or a free-standing teak stool.
Teak bench or built-in tiled bench — which is better?
Different jobs. A built-in tiled or slab bench is permanent, carries weight, can be leaned on and adds to the room’s value; it has to be designed in from the start and cannot be undone cheaply. A teak stool costs a fraction, needs no construction, suits a finished shower and can be removed — but it moves underfoot when wet and gives nothing to steady yourself on. If the shower is being rebuilt, build the bench. If it is not, buy the stool.
Get a shower designed around a seat, not one with a seat squeezed in
The difference between a bench that gets used every day and one that quietly makes the shower worse is decided on paper, before the first tile is ordered. We measure the room, draw the compartment with the bench and the required clear area on it, and give you a written scope you can compare against anyone else’s. Site visits take about two hours and proposals follow within 48 hours.