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Houston Metro · Residential & Commercial

Bathroom Accessible Remodel in the Houston Metro

An accessible bathroom is a different job depending on which Houston you live in. In a 1968 ranch off Bissonnet the room sits on a shallow slab with cast iron under it, the walls are 2×4 with no blocking anywhere, and the door is…

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In short

What the work involves

In the older house, demolition goes to studs and slab, then the drain branch gets inspected while it is open. Cast iron that has scaled down or lost its bottom is a decision point, and replacing it with PVC means cutting the slab. Galvanised supply that has narrowed gets repiped in PEX or CPVC, because a thermostatic valve cannot balance flow it never receives. Framing follows: full-height plywood blocking in every wall that might ever carry a bar or a seat, a widened door opening with a header if that wall carries load, and often a furred wall to hide a carrier if a wall-hung toilet is planned. In the 2000s house the framing is usually square and the drain is plastic, so the first move is scanning the slab for post-tension tendons before any recess is cut; building the floor up is sometimes the better answer instead. From there the two converge. Electrical, pan pre-slope, waterproofing membrane, a flood test held overnight, tile set with movement joints at the perimeter, valve trim, fixtures, then bars and seat landed into blocking that was mapped and photographed before the drywall went on.

What gets specified, and why

Grab bars are stainless, 1-1/4 to 1-1/2 inch, in a peened or knurled finish that stays grippable wet; plated finishes pit in a humid bathroom. They anchor to plywood ladders, not to drywall toggles. Shower seats are phenolic or teak on a rated folding frame, or a built-in bench with a sloped top and the same waterproofing as the walls. For the pan, a mud bed with a proper pre-slope over a sheet or liquid-applied membrane handles slab movement and odd shapes better than a foam tray, particularly in a recessed slab. A linear drain lets the whole floor fall in one plane, which matters if a wheelchair rolls in. Small-format porcelain gives more grout lines and more grip; polished natural stone in a wet zone is a poor choice here anyway, since hard water spots it. Valves should be pressure-balancing or thermostatic with the high limit stop actually set, paired with a handheld on a slide bar. Cabinets get plywood boxes. Particleboard swells at the toe kick the first time water sits.

Why the Gulf Coast changes this job

Two local realities shape this work. Expansive clay under a slab-on-grade moves with the seasons, which is why a curbless pan gets soft joints where tile meets wall and at every plane change: a rigid grout line across a moving joint is the crack you will see in year three. Second, post-1985 stock in Katy, Cypress and Fulshear is commonly post-tension. Recessing that slab for a zero-threshold shower is possible, but only after a scan locates the tendons, and a hit is not a patch job. Inner-Loop and Spring Branch homes from the sixties and seventies bring the opposite set: cast iron drains, galvanised supply, sometimes aluminium branch wiring at the receptacles. And year-round humidity means the exhaust fan is structural to the design, not a fixture choice. It has to be sized for the room, ducted in insulated pipe, and terminated through a roof or wall cap, not dumped into the attic or a soffit vent.

Where these jobs go wrong

The failure we see most is grab bars into tile with anchors and no wood behind. Blocking must be installed, mapped and photographed before board goes up, and it should run wider and taller than the plan, because needs change. Second is the barn door. It looks like an access solution and is not: the slab overlaps the opening, the track sits proud, and it seals nothing in a humid room. A pocket door with the right jamb or swing-clear offset hinges on the existing door usually buy more clear width for less money. Third is waterproofing that stops at the old curb line. Without a curb, water travels, so the membrane has to extend well out onto the bathroom floor and up behind the door casing. Fourth is a pan sloped in several directions at once, which is fine for a standing shower and awkward for wheels. Fifth, on newer slabs, cutting before scanning. Sixth, ordering a wall-hung toilet after framing is closed, when the carrier had to be set inside the wall.

What moves the price

Whether the drain has to move is the biggest single lever, because it decides if the slab gets opened. Post-tension scanning and any engineered repair adds to that. Door widening is cheap in a partition wall and not cheap in a bearing wall that needs a header. Room size drives everything downstream, so annexing a linen closet or a hall corner to get real turning space changes the number more than fixture selection does. Roll-in shower footprint, mosaic tile (more labour per square foot), a wall-hung toilet and carrier versus a floor-mounted comfort-height unit, and a custom vanity with knee clearance and an offset drain all move it. In older homes, repiping galvanised supply or replacing a failed cast iron branch is common enough to plan for. Permitted plumbing and electrical work carries fees set by the jurisdiction, and unincorporated Harris and Fort Bend do not handle it the same way the City does.

How a project runs

We start by talking about the person using the room, not the fixtures: what they use now, what they may use in three years, which side they transfer from. Then we measure, look in the attic and under the sink, and put the scope in writing. Permits are pulled where the work requires them. Demolition, then rough plumbing and electrical, inspected before anything is covered. Blocking gets photographed. The membrane is flood tested before tile. Tile, trim, fixtures, then a punch walk with the person who will actually use the shower. To have a layout looked at before anything is ordered, call (281) 235-6971.

Common questions

Does my house have to meet ADA?

No. ADA governs public accommodations, not private homes, so nothing in your bathroom is legally bound by it. The dimensions in those standards are still a useful starting point because they came from real clearances. But the fit should be to the person who lives there, including their transfer side and their equipment, which sometimes means departing from the published numbers on purpose.

Can a curbless shower be done on a slab?

Usually, by one of two routes: recessing the pan area of the slab, or building the whole bathroom floor up and ramping the doorway. On a post-tension slab, common in post-1985 Katy and Cypress homes, the area has to be scanned for tendons before any saw cutting. Where recessing is not sensible, a very low-profile ramped threshold is the fallback.

Will grab bars hold if they are screwed into tile?

Not reliably. Tile and drywall anchors are not a substitute for wood. The bar has to land in solid blocking, typically 3/4 inch plywood run full height between studs, installed during framing. That is why blocking goes in wider than the current plan needs and gets photographed before the walls close, so a bar can be added later without opening tile.

Do we need a permit for this?

Inside Houston, plumbing, electrical and structural work is permitted even though the city has no zoning, and moving a drain or adding circuits falls in that group. Unincorporated Harris and Fort Bend County handle permitting differently. We confirm with the authority having jurisdiction for your address rather than assuming, and inspections are scheduled around their calendar, not ours.

Bathroom Accessible Remodel by location

We cover 102 ZIP codes across the Houston metro. Pick the area closest to you:

Planning bathroom accessible remodel?

We measure, look at the slab and the existing rough-in, and give you a scope you can actually compare against another bid.

Call (281) 235-6971

MS Home Remodeling · 1530 W Sam Houston Pkwy N, Houston, TX 77043 · (281) 235-6971

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Kitchen remodeling

Cabinets & counters

Planning

Start with a measured visit

Bathroom remodeling

Planning

Start with a measured visit

Whole-home renovation

Additions

Interior

Start with a measured visit

Exterior

Outdoor living

Flooring

Start with a measured visit

Commercial remodeling

Build-out & occupancy

Start with a measured visit

Building in Houston

Planning a project

Start with a measured visit

Company

Start with a measured visit

Where we work

Bathroom Accessible Remodel in the Houston Metro

In short

What the work involves

What gets specified, and why

Why the Gulf Coast changes this job

Where these jobs go wrong

What moves the price

How a project runs

Common questions

Bathroom Accessible Remodel by location

Planning bathroom accessible remodel?

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