A camper van with a bathroom is a real vehicle rather than a compromise, and it is also the decision first-time buyers regret most often. A wet bath costs floor length, weight, water and ventilation, and it earns all four back only under a narrow set of briefs. Here is what each version costs, which American shops build one, and when the honest answer is a portable toilet.
The short answer
- Four answers exist: a wet bath, a separate dry cubicle, an outdoor shower off the rear doors, and no shower at all.
- A fitted wet bath adds $7,100 to $21,000 to a conversion, and lands most easily on a 170 inch wheelbase.
- Water decides it, not floor space. A standard showerhead moves 2.5 gallons a minute, so a 20 gallon tank is 8 minutes of showering.
- Full tanks are weight: 40 gallons fresh plus 40 grey is 667 pounds against a Sprinter 2500's published 3,450 to 3,814 pounds of payload.
- RVIA certified vans with real bathrooms start at $97,000 with DM Vans and run to $220,000 at Storyteller Overland.
- For 20 nights a year, a portable cassette toilet and a rear-door hot line beat a wet bath on every measure that matters.
The four ways to put a bathroom in a camper van
There are four, and they are separated by an order of magnitude in cost rather than by taste. Everything a shop will quote you is one of these or a hybrid of two.
| Option | What it gives you | Fitted cost | Who it suits |
|---|---|---|---|
| Wet bath | Shower and toilet in one sealed cubicle, usable indoors in any weather | $7,100 to $21,000 | Full-timers, cold and wet climates, 170 inch wheelbase |
| Separate dry cubicle | A shower stall with the toilet outside it, drier and easier to keep clean | $9,000 to $24,000 | Long-wheelbase vans where the floor can carry two fixtures |
| Outdoor shower | A hot line and a head at the rear doors or a side hatch | $600 to $2,200 | Warm climates, trailheads, weekend and shoulder-season use |
| Indoor toilet only | A cassette or composting toilet with no shower anywhere | $120 to $1,800 | Almost everyone under $50,000 of conversion work |
The wet bath
One sealed box. A moulded pan on the floor, waterproof walls, a drain, a shower head and the toilet in the same cubicle, so everything in there gets wet when you use it. That is the trade the name is describing, and it is the version almost every American shop builds when a customer asks for a bathroom, because it is the only one that fits without surrendering the whole rear of the van.
It usually goes behind the driver's seat or in a rear corner, and wherever it goes it takes floor that something else wanted. A fixed bed, a galley run, a garage and a wet bath all want the same square feet, which is why the bathroom decision belongs in the layout rather than in a fixtures list at the end. Shops that treat it as a late addition produce the vans where the door hits the swivel seat.
The separate dry cubicle
The shower gets its own stall and the toilet lives outside it, usually under a bench or in a cabinet. It is better to live with by a wide margin: the toilet paper stays dry, the toilet is usable while somebody is showering, and the stall dries out faster because it holds less. It also needs more floor than a van has unless the wheelbase is long. Ford's own listing shows the Transit in extended high roof configurations, and that length is what makes two fixtures possible on a chassis that costs less than a Sprinter.
The outdoor shower
A hot line run out of the rear doors or through a side hatch, a head on a hose, and either a pop-up privacy tent or nothing at all. It costs $600 to $2,200 fitted and takes no floor whatsoever, which is a genuinely different proposition from the other three.
What it costs you is weather and season. In Utah in July it is the better shower, not the cheap one. In Montana in October it is a shower you will not take. The other catch is drainage: with no grey tank, every gallon lands on the ground under the van, which makes it unwelcome at organised campgrounds.
Toilet only, no shower
The most common answer in the country and the one nobody photographs. A portable cassette toilet at $120 to $350, a gym membership, campground showers on the nights you are paying for a site anyway, and a solar bag for the rest. It solves the urgent half of the problem, which is the toilet, and leaves the half you can plan around.
What a van bathroom costs, and which shops build one
The fixtures are not where the money goes. A shower pan and a head are a few hundred dollars at retail. What you are paying for is tankage, waterproofing, extraction and the shop hours to make a wet box inside a steel shell stay dry for a decade.
What a wet bath adds to a conversion
Total$7,100 to $21,000
Tankage is the line that blows this budget. A shower sized for two people means a second fresh tank and a grey tank that has to go somewhere, and on a van already carrying a battery bank under the bed, finding that somewhere is a redesign rather than an add-on.
Under $50,000 of conversion work, no American shop is fitting you an indoor shower, and the good ones will tell you so on the first call. Glampervan builds the ProMaster 136 inch high roof at $30,000 to $65,000 and the short wheelbase settles the question before the budget does. Vertical Vans runs $35,000 to $95,000 out of Salt Lake City, Custom Coach Creations does full conversions from $18,695, and at all three the bathroom in the brief becomes a portable toilet and an outside line.
Between $50,000 and $100,000 the wet bath appears, usually as a package option rather than a drawing. Ready.Set.Van publishes fixed prices from $65,000 to $95,000. VanDOit runs $58,000 to $108,000 on the Transit. DM Vans publishes $97,000 to $105,000 on the ProMaster and is RVIA certified, which means the build has been inspected against the industry's electrical, propane and egress standards rather than self-attested, and that inspection matters more in a room with water and a propane heater in it than anywhere else in the van.
Above $100,000 the bathroom stops being a compromise and starts being a specification. Storyteller Overland builds RVIA certified Sprinters and Transits at $160,000 to $220,000. Outside Van runs $125,000 to $250,000. Brooklyn Campervans starts at $92,000 and fits an Infinity Shower that recirculates and UV sterilises a single gallon of water instead of draining a tank, which changes how long the van stays out more than another battery would. If the bathroom is the reason for the whole purchase, comparing the ten American shops at that level is faster than asking ten budget shops the same question.
The toilet is a decision of its own
Buyers collapse the toilet and the shower into one item and shops let them, because the wet bath puts both in the same box. They are separate purchases with separate failure modes, and the toilet is the one you will interact with twice a day. Four types are actually fitted in American builds.
| Type | How it works | Cost | The catch |
|---|---|---|---|
| Composting | Separates solids and liquids, fan vented through the wall | $900 to $1,300 | The liquid bottle needs emptying every 2 to 4 days, and the solids need somewhere to go |
| Plumbed cassette | Sealed tank pulled out through an exterior service hatch | $900 to $1,800 fitted | You need a dump point, and the hatch is a permanent cut in the van's side |
| Portable cassette | Self-contained unit that lifts out and carries to a toilet | $120 to $350 | Small capacity, and it lives in the way of something |
| Dry urine diverting | Separates at the bowl, no fan on some models | $500 to $1,200 | Same solids question as composting, with less hardware to fail |
The word composting oversells what those units do. What you empty is not finished compost, where you may put it is a local question, and the liquid bottle is the part that governs your week. Owners who love them accepted that up front. Owners who hate them expected a septic system.
For a van used 20 to 40 nights a year, a portable cassette at $120 to $350 does everything a $1,300 composting unit does, comes out of the van when you sell it, and costs nothing in floor space that was not already going to be a cupboard. It is the single most cost-effective piece of hardware in this whole category.
Water is the constraint, not floor space
The reason a van shower feels different from a house shower is arithmetic. The EPA puts a standard showerhead at 2.5 gallons a minute, and a WaterSense labelled head at no more than 2.0. A 20 gallon fresh tank at 2.5 gallons a minute is 8 minutes of showering, total, for everybody aboard, before the tap runs dry and the galley has nothing left either.
Then it goes the other way. Every gallon you shower with becomes a gallon of grey water you are carrying until you find somewhere to put it, so a van with a real bathroom needs two tanks of roughly equal size rather than one. Shops that fit a 30 gallon fresh tank and a 12 gallon grey tank have built you a van that fills up its grey before it empties its fresh, and you will discover that on day three.
Hot water is the third tank-shaped problem. A 6 gallon electric heater draws hard on the battery, an on-demand propane unit needs a vented enclosure and a propane locker, and a hydronic loop off a diesel heater is the neat answer and the expensive one. Sizing the tanks, the pump and the heater around a shower is a different water system from a galley tap, and it is specified at the start of a build or not at all.
Recirculating showers are the one piece of genuine innovation in this category. They filter and reuse a small volume rather than draining it: Brooklyn Campervans runs a single gallon through UV sterilisation on the Elevate v4, and owners have built the same idea themselves with a 3 gallon loop and a five-stage filter. Neither is cheap, and both change the shower from a tank problem into a power problem, which is usually the easier of the two to solve.
From the desk
Ask a shop how many wet baths they built last year, not whether they build them. A wet area is the one part of a van where a first attempt is visible: the seal where the pan meets the wall, the door catch, the way the panel returns into the floor. We would take the fifteenth wet bath a shop has built over the first one drawn specially for us, every time.
Ventilation, and how van bathrooms actually fail
A van bathroom does not fail at the shower head. It fails at the wall panel, 18 months later, because nobody moved the water vapour out of a sealed insulated box fast enough.
Two fans is the working rule: the main roof fan for the living space and a dedicated extractor for the wet area, ideally on a humidity switch so it runs whether or not anyone remembers. The pan has to be a moulded piece or a properly sealed tray rather than a lined floor, the wall joints need to be bonded rather than screwed through, and every penetration through the shell has to be sealed from the outside as well as the inside.
Costs money to get wrong
A wet box with one fan rots the van from the inside
Two people showering indoors put several pounds of water vapour into a sealed steel shell every week. With one roof fan and no dedicated extraction, that water condenses behind the wall panels where nobody can see it, and the first symptom is a soft patch of floor or a smell that will not leave. Stripping a wall back to bare metal to treat rust and replace insulation runs 20 to 40 shop hours plus every cabinet that has to come out first, and no builder warranty covers moisture the owner introduced. A humidity-triggered extractor, a sealed pan and a second vent cost $400 to $900 at build time.
A van with an outdoor shower and no indoor wet area is easier to keep dry over ten years, because nothing asks the insulation to survive a warm fog twice a day. That is not a reason to skip a bathroom, but it belongs in the sum.
What a bathroom costs in weight and in floor
Water weighs 8.34 pounds a gallon and it is the heaviest thing most owners ever add to a van. Forty gallons of fresh and 40 of grey is 667 pounds of payload gone before the tanks, the pan, the walls, the heater and the toilet are counted, and payload is the number that decides the build once a bathroom is in the brief.
Set that against what the chassis gives you. Mercedes publishes 3,450 to 3,814 pounds of payload on the 170 inch high roof 2500, which is the most common camper platform in the country, and a four-season conversion with a bathroom, two adults and a full set of tanks can eat most of that. The 3500 on the same wheelbase is published at 4,269 pounds and the 4500 at 6,382, which is why heavy builds with real bathrooms go on the heavier chassis. Off Highway Van attacks the same problem from the other end, building in aluminium rather than timber at $165,000 to $245,000 to take several hundred pounds out of the conversion itself.
Floor is the second bill. The cubicle takes its space from whatever was in that corner, and in most layouts that is the garage under the bed, so a garage that loses a third of its length stops holding two bikes and starts holding one. Nobody quotes that trade in dollars because it does not have a price, and it is the trade owners actually complain about in year two.
When the answer is no
A van with a bathroom is the right answer for a real set of buyers: full-timers, families, anyone travelling in cold or wet country for months, anyone with a medical reason to need a private toilet on demand. For everybody else it is an expensive way to lose a garage. Five briefs where we would talk a buyer out of it:
- 20 nights a year. At $7,100 to $21,000 fitted, that is $355 to $1,050 a night in build cost alone before you have paid for the van.
- A 144 inch wheelbase already carrying a fixed bed, a galley and a garage. Something has to leave, and the bathroom is the newest arrival.
- Warm, dry country. The rear-door shower is the better shower in July, not the budget substitute for one.
- A conversion budget under $50,000, where the same money buys a lithium bank and a diesel heater that get used every single night.
- A van that lives in a city and rarely passes a dump point, because a full grey tank with nowhere to go is a van you stop using.
What those buyers do instead is not a hardship. It is a portable cassette toilet, a plumbed hot line at the rear doors, a privacy tent for the two or three times a year it matters, and a gym membership that costs less than the extractor fan.
The no-bathroom van, costed for a year
Total$1,320 to $3,890
Every line except the plumbed one comes back out at resale, and none of it costs floor. The version of this that fails is the one with no plan for grey water, so budget a 5 gallon portable tote and use it.
The reversible route keeps the door open. A buyer who spends two seasons without a bathroom knows exactly what they missed, and Contravans retrofits systems into a van you already own at $45,000 to $130,000, with modular jobs turned around in 4 to 6 days.
How to specify a bathroom with your builder
Every shop will say yes. The useful information is in how precisely they answer the follow-up, because a shop with a settled wet-bath process has the numbers ready and a shop improvising will give you adjectives.
Six questions before the bathroom goes on the drawing
- Fresh and grey capacity in gallons, and exactly where each tank sits in the van
- Finished weight with both tanks full, and the payload that leaves on this chassis
- How the wet area is extracted, and whether the fan runs on a humidity switch
- What the pan and the walls are made of, and who warranties the seal between them
- How the grey tank empties, and whether it can be dumped without a hookup
- What the identical van costs without the bathroom, quoted as a line rather than a discount
The last one is the question that does the work. A shop that can price the same van both ways in an afternoon has built both, and the gap between the two numbers is the honest cost of the decision. Put that figure next to the number of nights you actually plan to sleep in the van, and the answer usually stops being difficult.
