Walk-in showers and bathroom remodels in Houston, TX: costs and rules

What a walk-in shower costs in Houston

These are 2026 estimates for Houston from Angi. Angi builds them from national averages and then applies a local price index, so treat them as a starting point, not a quote^[1].

Project in Houston	Typical range	Average
Walk-in shower, installed	$5,916 to $11,832	$8,874[1]
Tub to shower conversion	$1,479 to $7,888	$2,958[2]
Full bathroom remodel	$6,899 to $18,688	$12,794[3]

Angi gives about $300 per square foot for a prefab walk-in shower and about $600 per square foot for a custom one in Houston^[1]. Bathroom remodelers in the city charge $50 to $150 per hour, and plumbers $45 to $200^[3]. A partial bath remodel can start near $2,500, while an upscale full renovation can pass $30,000^[3].

What pushes a Houston job up is usually not the tile. It is moving the drain in a concrete slab, rotted subfloor or framing behind an old tub, and adding a fan that actually vents outside. For national ranges, see the walk-in shower cost guide.

Does a shower remodel need a permit in Houston?

Almost always, if plumbing is touched.

Texas law requires cities over 5,000 people to make you get a permit before plumbing work. The only exceptions are repairing leaks and replacing faucets, ballcocks, water control valves, garbage disposals and toilets^[7]. A shower valve, drain or shower pan is not on that list.

Houston's residential repair permit flyer says the same thing in plain words: permits are not needed to replace faucets, ballcocks or valves, disposals or toilets, and "permits are required for all other plumbing work, including sinks"^[4].

What usually does not need a permit in Houston: painting, tiling, cabinets, countertops and similar finish work, and drywall patches up to 100 square feet that are not part of a fire-rated wall^[4].

Which permit?

• Plumbing permit. Pulled by a licensed plumber who is registered with the city, or by a homeowner (see below). Trade inspections must be scheduled by the registered licensed contractor^[5].
• Residential remodel permit. For a larger remodel, such as moving walls. It needs a floor plan of the existing building, wall sections showing bearing walls and a materials list, and the city lists a processing time of 1 to 15 business days^[5]. Removing a load bearing wall brings extra requirements^[5].
• Electrical. All electrical work, including a new fan circuit or heated floor, needs a permit and a licensed electrical contractor registered with the city^[4].

Can a homeowner pull the permit?

Yes, for plumbing, if you own and occupy the home, it is registered as your homestead, and you do the work yourself^[6]. The city's January 2026 homeowner permit form sets the minimum at $131.12, admin fee included^[14]. Texas law backs this up: an owner does not need a plumbing license for work in their own homestead^[7]. You cannot use this permit to bring in an unlicensed helper.

Who licenses plumbers and contractors in Houston?

• Plumbers: the Texas State Board of Plumbing Examiners (TSBPE), which runs a public license search^[8]. Houston's guidance also points homeowners to TSBPE to verify master plumbers^[4]. Some cost guides send readers to the state's general licensing agency for this; for plumbing, TSBPE is the right place.
• City registration: a plumbing contractor must register with any city that requires it before working there^[7], and Houston says electrical, mechanical and plumbing contractors must buy a permit and be registered with the city^[4].
• General contractors and remodelers: not licensed in Houston, per the city^[4]. That makes references, insurance and a written contract more important. The city also recommends getting three bids^[4].

Houston factors that change the job

Slab foundations and drain moves

Nearly all new homes in this part of the country sit on a concrete slab: 97.9% of new single-family homes started in the West South Central states in 2024^[11]. On a slab, the shower drain and its trap run below the concrete. Keeping the new walk-in shower drain where the tub drain was is the low-cost path. Moving it, or lowering the floor for a curbless entry, usually means cutting a trench in the slab, rerouting the pipe, and patching the concrete. Ask each contractor to price the drain location as a separate line.

Houston soil adds a second reason for care. By our calculation from USDA soil survey data, about 42% of rated soil area in Harris County has high or very high shrink-swell potential^[13]. Engineers list leaking sewer or water lines under a slab as a cause of moisture change that can move a foundation on expansive soil^[12]. After any slab cut, ask the plumber to pressure test the drain before the concrete goes back.

Humidity and mold

EPA advises keeping indoor humidity below 60% and ideally 30% to 50%, running a fan or opening a window while showering, and drying wet materials within 24 to 48 hours^[9]. In Houston's damp climate, three things matter most in a shower remodel:

• A fan ducted to the outside, not into the attic.
• A continuous waterproof layer behind the tile, inspected before tile goes on.
• Removing any wet or moldy wall material found during demolition rather than covering it. EPA says areas over about 10 square feet call for more than a homeowner cleanup^[9].

Older homes

Houston's housing is younger than most big cities. The median home was built in 1982, but about 47% of homes were built before 1980 (our arithmetic from Census data)^[10]. In homes that age, many plumbers expect to find older drain materials and tile set in a thick mortar bed, which can add demolition time. Ask for an allowance in the quote for what is found behind the walls.

Flood-prone areas

The city tells owners of homes in the floodplain to contact the Floodplain Management Office before making repairs^[4]. If your bath remodel follows water damage, call them first.

When to call a pro

• Any shower valve, drain or pan replacement: a TSBPE-licensed plumber registered with the City of Houston, unless you are doing your own homestead under a homeowner's permit^[6][8].
• A curbless shower or a drain move on a slab: get the slab cut, patch and drain test written into the quote.
• Mold or soft framing found behind the old tub: have it removed and dried before new walls go up^[9].
• Signs of a slab leak (warm spots, a running meter with taps off, new cracks): a licensed plumber for a leak test before the remodel.