Tub-to-Shower Conversion: Is It Right for Your Austin Home?

Tub-to-shower conversions are one of the most requested bathroom projects we get in Austin. The standard builder tub-shower combo that came with most Austin homes, that fiberglass or acrylic insert with a shower curtain rod, is functional but uninspiring. Replacing it with a walk-in shower opens up the bathroom, looks more modern, and changes how you use the space every day.

But a tub-to-shower conversion is not the right move for every bathroom. There are resale considerations, plumbing logistics, building code requirements, and design decisions that should all factor into the decision. Here is a complete breakdown.

When a Tub-to-Shower Conversion Makes Sense

The strongest case for converting a tub to a shower is in a master bathroom where the home has at least one other bathtub. This is the scenario we see most often: a homeowner in Cedar Park, Round Rock, or Steiner Ranch has a master bath with a tub-shower combo that they never use as a tub. The hall bathroom has a separate tub that the kids use. The master bath tub just takes up space.

In this situation, converting the master tub to a walk-in shower is a clear upgrade. You gain a more functional shower, a more attractive bathroom, and the home still has a bathtub for families with young children or buyers who want the option.

Aging-in-place is another strong reason for the conversion. Walk-in showers with low or zero-threshold entries, grab bars, and built-in seating are dramatically safer and more accessible than climbing in and out of a bathtub. For homeowners in Dripping Springs, Lakeway, and other areas where people plan to stay in their homes long-term, this conversion is a quality-of-life upgrade that also increases the home's accessibility if it ever goes on the market.

Small bathrooms benefit from the conversion too. A standard bathtub is 60 inches long and takes up significant floor space. Replacing it with a walk-in shower that uses the same footprint but feels more open (especially with a glass enclosure instead of a shower curtain) makes the bathroom feel larger. We see this a lot in older Austin homes in East Austin, Crestview, and Brentwood where the bathrooms are compact.

When to Keep Your Tub

There is one firm rule in Austin real estate: a home should have at least one bathtub. If your home only has one bathroom, or if the only bathtub is the one you want to convert, we strongly recommend keeping it.

Families with young children need a bathtub. That is a fact of daily life that trumps aesthetics. Even if your household does not currently have small children, a home with zero bathtubs is harder to sell to families, which narrows your buyer pool.

Real estate agents in Austin consistently tell us that a home without any bathtub faces buyer resistance, especially in family-oriented neighborhoods like Avery Ranch, Circle C, Mueller, and the suburban communities in Williamson and Hays counties.

The resale impact of removing the only tub can outweigh the benefits of the new shower.

The Compromise

If your master bath is large enough, a freestanding soaking tub paired with a separate walk-in shower gives you the best of both worlds. This is the most popular master bath configuration in new Austin construction and in high-end remodels. The freestanding tub is a design feature, the walk-in shower is the daily-use workhorse, and the home retains its bathtub for resale purposes.

For smaller master baths where space does not allow both, keeping the tub in the master and converting the hall bath tub to a shower is another option, though this is less common because the hall bath usually serves as the children's bathroom where the tub is most needed.

Plumbing Considerations

Converting a tub to a shower involves plumbing modifications. The extent of those modifications depends on the existing layout and the new shower design.

Drain Relocation

A bathtub drain is located at one end of the tub, while a shower drain is typically centered in the shower floor. This means the drain pipe, which runs through or under the concrete slab in most Austin homes, usually needs to be relocated. Relocating a drain in a slab foundation involves cutting the concrete, rerouting the pipe, and patching the slab. It is standard work for an experienced plumber, but it is the most invasive part of the conversion.

If you choose a linear (trench) drain along one wall of the shower, the drain location may work without cutting the slab in some cases, depending on where the existing tub drain exits. We assess this during the planning phase and let you know whether slab work is needed.

Supply Line Repositioning

Tub faucets are typically mounted low on the wall, near the tub deck. Shower valves mount higher, usually around 48 inches from the floor, with the showerhead outlet around 78 to 80 inches. The hot and cold supply lines need to be extended and repositioned to the new valve height. This is done through the wall cavity and does not require slab work.

If you are adding features like a rain showerhead on the ceiling, body spray jets, or a handheld shower on a slide bar, each one needs its own supply line connection back to the mixing valve.

Multi-function shower systems are popular in master bath remodels across Westlake, Lakeway, and Tarrytown, and the plumbing for them is more complex than a simple single-head setup.

Water Heater Capacity

A walk-in shower with a large rain head and multiple spray functions uses more water per minute than a standard tub-shower combo. If your water heater is already borderline on capacity (common in older Austin homes with original 40-gallon tanks), the new shower may exhaust the hot water faster than expected. We evaluate your water heater capacity during the planning phase and recommend an upgrade if needed.

Walk-In Shower Design Options

The beauty of a tub-to-shower conversion is the range of design possibilities. Here are the most popular options we install in Austin.

Tiled Walk-In with Glass Enclosure

This is the most common configuration. We build a waterproofed shower pan, tile the walls and floor, and install a frameless or semi-frameless glass enclosure. The glass can be a full enclosure with a hinged door, a half-wall with a fixed glass panel, or a doorless walk-in design with a glass splash panel. Subway tile, large-format porcelain, and natural stone are all popular wall tile choices in Austin.

Doorless Walk-In Shower

Doorless showers eliminate the glass door entirely and use the shower layout to contain water. They require a larger footprint (at least 36 by 60 inches, though 42 by 60 is more comfortable) and a sloped floor that directs all water to the drain. The open feel of a doorless shower is striking, and the lack of a door or curtain makes cleaning easier. These work best in master baths with enough space for the larger footprint.

Prefabricated Shower Bases with Tile Walls

For a faster, more budget-friendly option, we can install a solid-surface shower base (Swanstone, Kohler, or similar) with tiled walls above. The prefabricated base eliminates the custom mud-bed construction and waterproofing steps, which saves time and reduces the risk of future leak issues. This is a popular choice in hall bath conversions and in rental property upgrades.

Accessible Showers

For aging-in-place conversions, we install zero-threshold (curbless) showers that are wheelchair-accessible and eliminate the step-over barrier entirely. The entire bathroom floor slopes gently toward the shower drain.

Grab bars, fold-down seats, and handheld showerheads on adjustable slide bars make the shower safe and usable for people with limited mobility. These showers meet ADA guidelines and are becoming increasingly popular in Austin even among younger homeowners who value the clean, open look.

Austin Building Code Requirements

The City of Austin and surrounding municipalities follow the International Residential Code with local amendments. Here are the key code requirements that apply to shower installations.

Minimum interior shower dimensions are 30 by 30 inches, measured wall to wall at a point 70 inches above the shower floor.

Most walk-in shower designs exceed this minimum significantly, but it matters for small bathroom conversions where space is tight.

Shower floors must slope toward the drain at a minimum of one-quarter inch per foot. This ensures water drains completely and does not pool.

Waterproofing is required on all shower wall and floor surfaces. The code specifies that the waterproof barrier must extend at least 72 inches above the finished floor on walls above the shower pan.

Shower valves must be pressure-balanced or thermostatic to prevent scalding if someone flushes a toilet or runs water elsewhere in the house. This is a safety requirement that we always meet regardless of code, because a sudden burst of hot water in a shower is dangerous.

GFCI protection is required for all bathroom electrical circuits. Any outlets, lights, or exhaust fans in the bathroom must be on a GFCI-protected circuit.

If your conversion involves cutting the slab for drain relocation, a plumbing permit is required. The City of Austin requires inspections of all permitted plumbing work before it can be concealed. We handle all permits and inspections as part of the project.

Timeline for a Tub-to-Shower Conversion

A straightforward tub-to-shower conversion in an existing bathroom typically takes two to three weeks.

• Days 1-2: Demolition of existing tub surround and tub removal. Plumbing rough-in, including drain relocation if needed.
• Days 3-5: Waterproofing, cement board installation, and shower pan construction.
• Days 6-9: Tile installation on walls and floor.
• Days 10-11: Grouting, curing, and caulking.
• Days 12-14: Glass enclosure installation, fixture trim-out, paint, and cleanup.

Add one to two weeks for permit processing if slab plumbing work is involved. Add time if you are doing additional bathroom upgrades (new vanity, flooring, lighting) alongside the shower conversion.

Making the Decision

Here is our framework for deciding whether a tub-to-shower conversion is right for your home.

• Convert if: the home has at least one other bathtub, the bathroom is a master bath used primarily for showering, you want aging-in-place accessibility, or the tub takes up space you could use better.
• Keep the tub if: it is the only bathtub in the home, you have young children who use it daily, or your target buyer pool includes families who will want a tub.
• Consider both if: your master bath is large enough for a freestanding tub and a separate walk-in shower, which gives you the best design, the best functionality, and the strongest resale position.

We do free consultations for tub-to-shower conversions across the Austin metro area, from Georgetown to Kyle and everywhere in between. We will look at your bathroom, discuss your goals, evaluate the plumbing, and give you a clear plan with a realistic timeline. Give us a call or fill out the form on our site to get started.