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Installing in Mobile Homes, Condos, Upper Floors, and on Concrete Slabs

Updated September 2026

Yes, a walk-in tub can be installed in a mobile home, in a condo or upper-floor unit, and on a concrete slab. Ella walk-in tubs go into all of these settings regularly. Each one adds one or two planning steps, but the tub itself is the same: it needs a route into the home, a level and adequately supported floor, a working drain and water supply, and dedicated GFCI-protected power. This article covers what is different in each situation so you and your installer can plan ahead.

Mobile and Manufactured Homes

Many customers have installed an Ella walk-in tub in a mobile home or trailer home. The most difficult part is usually getting the tub into the bathroom, so the doorway is the first thing to measure. You need a door opening larger than 26 inches to fit our narrowest tub, and each model has its own requirement, so compare the shipping size and actual width on the model's spec sheet with every doorway and hallway on the path. Consider corners and turns along the way, not just the doorway. RVs, campers, and small trailers often lack doors wide enough, while manufactured, prefab, and modular homes usually do. Also verify that the existing plumbing can supply enough hot water and handle the drainage, and keep in mind that an outward-swing door needs clearance in front of the tub, which a compact bathroom may not have. Our doorway measurement guide walks through the measuring.

The models the team recommends most often for mobile homes are the Elite, Petite, Mobile, and Front Entry. The Capri, at 30 inches by 52 inches, and the Flow, at 28 inches by 48 inches, are also compact choices, while the Monaco is 32 inches wide and needs a wider passage. Whatever model you consider, the passage into the bathroom must be wider than the tub's actual width, and if your clearance is tight, please contact support with your measurements before ordering. Local mobile-home guidelines may apply, and a local plumber or general contractor can complete the installation.

White Ella Mobile 26 by 45 inch walk-in tub with the outward-swing door open showing hydro jets, chrome faucet, and grab bar
The Mobile, at 26 by 45 inches, is the compact choice for tight mobile-home bathrooms.

This tour of the Mobile shows why it is the usual starting point for a small bathroom: about 45 inches long and just under 26 inches wide with a 19 inch seat, an outward U-shape door with the three-latch lock, air and hydro jets with foot jets, chromatherapy, a 2-piece faucet, inline heater, ozone, and an oversized 2 inch drain with an emergency pull chain. The Mobile profile has the full specification.

Will My Floor Hold the Weight?

The supporting subfloor must be able to carry the total weight of the bathtub, the bather, and the water, and it must meet local construction code requirements. That is the same load a conventional bathtub carries. If it cannot, the shell can warp, the door can fall out of alignment, and leaks can follow, so have your contractor evaluate the floor structure before ordering. Our weights article lists net and shipping weights by model, and our water capacity article gives the gallons to add. The tub can be set on the subfloor or on tile, and either way the floor under it must be level.

As the video shows, many Ella tubs have as many as eight leveling legs to spread the weight evenly. Check that each foot is securely on the floor, because if it is not, the door will not seal correctly and could leak. Adjust each leg as necessary and check levels on all sides of the tub. This matters even more on floors that are less rigid than a slab.

Concrete Slabs

The default frame and threshold height is preset at the factory to allow the drain piping to pass under the tub and above the floor, so a slab installation normally does not require opening the concrete. There is approximately 3 inches of clearance beneath the tub, which is enough space to run a 2 inch PVC drain pipe from the tub drain to your existing house drain, even when the house drain is on the opposite side of the tub. Installing over an existing shower drain on a slab can be done; have your plumber confirm the connection, and if you want to be sure, open a ticket with photos of the drain location. Whether to keep the drain above the slab or cut into the slab to lower the tub is a decision for your installer based on your drain plumbing. Lowering the tub below the default height is a custom installation with warranty consequences, covered in our article on lowering the tub.

Condos and Upper Floors

Customers have installed our tubs in third-story condos and similar units. Before ordering, have a local professional confirm the path through the building, including stairs, elevators, and doorways, and the floor's weight capacity. A few things are commonly different in a condo:

  • Approvals and permits. Many buildings require HOA approval and permits with drawings and electrical details. An experienced installer can prepare that paperwork during the site visit.
  • Delivery. If the building cannot accept a freight delivery, the tub can be shipped to your installer's business address instead. See preparing for delivery day.
  • Electrical. Condos rarely have basement or attic access, so pulling the dedicated circuits your package requires through finished walls and existing conduit takes more time and material. Circuit counts are in electrical requirements by model.
  • Water shut-off. Shut-offs often control a whole tier or floor, so the shutdown must be scheduled with building management and neighbors notified.
  • Construction and logistics. Steel studs, metal door frames, remote parking, and elevator trips all add time and material, so expect a condo project to involve more of both than the same tub in a single-family home.
Ella Petite walk-in tub installed in a bright marble bathroom
The Petite, at 27.5 inches actual width, is one of the narrowest Ella tubs and a frequent choice for mobile homes and small condos.

Common Questions

Can it go in a mobile or manufactured home?
Yes. Many customers have installed an Ella walk-in tub in a mobile or manufactured home, and the tub itself is the same as one going into any other house. What matters is that the doorway and the path into the bathroom allow the tub in, the floor supports the weight of the tub, water, and bather, and the plumbing and dedicated GFCI power can be provided. Measure every doorway, hallway, and turn carefully and have a local contractor confirm before you order.
Which models fit a mobile-home bathroom?
The Elite, Petite, Mobile, Front Entry, Capri, and Flow are the usual starting points for a mobile-home bathroom, and the Transfer26 and Lounger are also narrow-doorway options. The Mobile, at 26 by 45 inches, is the compact choice for the tightest spaces, and the Petite at 27.5 inches actual width is one of the narrowest tubs in the line. Compare each model's shipping size and actual width on its spec sheet to your doorways, and remember that an outward-swing door needs clearance in front of the tub.
Can it be installed on a slab without breaking concrete?
Usually, yes. The frame and threshold height is preset at the factory to leave approximately 3 inches of clearance beneath the tub, which is enough to run a 2 inch PVC drain pipe above the slab to your existing house drain, even when that drain is on the opposite side of the tub. Your plumber decides the routing, and cutting into the slab to lower the tub is a custom installation with warranty consequences.
How much weight can my floor handle?
That depends on your floor framing, so have a contractor evaluate the structure before you order. The load is the tub's net weight plus the water and the bather, which is comparable to what a conventional bathtub carries, and the subfloor must meet local construction code requirements. Our weights article and water capacity article give the figures for your model so your contractor can do the math.
Does Ella install in mobile homes or condos?
Ella's Bubbles manufactures the tub and does not perform installation, so the work is done by a licensed installer you choose, such as a local plumber or general contractor. Local mobile-home guidelines may apply, and an experienced installer can also prepare any HOA paperwork a condo requires. If you need help locating an installer, the team at (800) 480-6850 can point you in the right direction.
What size water heater does a mobile home need?
The same guidance applies in a mobile home as anywhere else: a 75 gallon or larger tank gives the best experience, and if you prefer a tankless unit it needs a high flow rate. Start by checking the water capacity for your model, since a larger tub needs more hot water, and confirm that the existing plumbing can supply it. Our hot water heater requirements article covers the details.
Can the tub go in a third-floor condo?
Yes, customers have installed our tubs in third-story condos and similar units. Before the tub ships, have a local professional confirm the route through stairs, elevators, and doorways, the floor's weight capacity, and any HOA approvals or permits the building requires. Schedule the water shut-off with building management, since shut-offs often control a whole tier or floor, and plan for the tub to ship to your installer's business address if the building cannot accept a freight delivery.
Can I install over an existing shower drain on a slab?
Often, yes. The approximately 3 inches of clearance under the tub allows the drain piping to run above the slab to the existing drain location. Have your plumber confirm the connection, and if you would like the team to look before you commit, open a ticket with photos of the drain location.

Have a question that depends on your exact model or configuration? Open a ticket at ellasbubbles.com/support or call (800) 480-6850 and our technical support team will be glad to help you and your installer.

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