Bathtub to Shower Conversion Cost in 2026: What to Expect

A prefab acrylic or fiberglass shower surround costs $400-$1,000 for the unit and can be installed in a day. A fully custom tile shower in the same footprint costs $2,500-$8,000 for materials alone, plus 3-5 days of labor. The tile option looks better and lasts longer, but it's a significant cost jump.

A tub drain sits at one end of the alcove; a shower drain needs to be centered or repositioned for proper flow. If the drain can stay close to its current spot, expect $500-$800. Moving it across the room or through a slab costs $1,500-$2,000 or more.

A basic framed sliding glass door runs $400-$800 installed. A semi-frameless pivot door costs $700-$1,500. A fully frameless hinged door runs $1,200-$2,500. Custom frameless panel systems for large walk-ins can reach $3,000-$4,500.

A standard 3x3 alcove shower conversion is the cheapest option. Expanding to a 3x4 or adding a corner entry point requires additional framing, more tile, and a larger glass enclosure. Every extra square foot of shower adds $100-$200 in tile and labor.

“Does your quote include drain repositioning, or does it assume the drain stays in its current location?”

Why this matters: Drain work is one of the most common sources of change orders in tub-to-shower conversions. Get this in writing before any demo starts.

“What waterproofing system do you use, and can you walk me through it?”

Why this matters: Shower waterproofing is where cheap work fails. Ask specifically whether they use a sheet membrane (Schluter Kerdi, Wedi) or a liquid membrane (RedGard, Hydro Ban) and where it gets applied.

“Will you need a permit, and do you handle the permit application?”

Why this matters: Converting a tub to a shower typically requires a plumbing permit in most jurisdictions. Unpermitted plumbing work can require removal and redo when you sell the home.

“Who installs the glass door - your crew or a subcontractor?”

Why this matters: Some tile contractors hand off glass work to a sub. This can create scheduling gaps and accountability gaps if the door doesn't fit properly. Know who is responsible for the full project.

“What is your process if the subfloor is rotted or damaged once we open things up?”

Why this matters: Tub surrounds frequently hide years of slow water damage. You need to understand how the contractor handles unexpected subfloor rot - both procedurally and in terms of pricing.