Tub to Shower Conversion Cost (2026)

The short answer

Converting a tub to a shower in 2026 costs $2,000–$12,000 depending on the method: a prefab kit runs $2,000–$5,000, a one-day install $4,000–$10,000, and a custom tile walk-in $6,000–$12,000. The drain staying put is the cheapest variable in the whole project — moving it through a slab adds $1,000–$3,000. Most conversions take 1–2 days for kits, 1–3 weeks for custom tile.

This is a sub-project of a full bathroom remodel — read that guide for the whole-room math. If the shower tile is the big-ticket line, the shower tile installation cost guide has the per-square-foot detail. If keeping a tub is on the table, the bathtub replacement cost guide prices the other side of that decision.

Cost by conversion method

The honest way to present this to a client: the kit and the custom job are different products, not cheap and expensive versions of the same thing. A kit is a fast, clean, sealed insert. A custom tile shower is a rebuild with a 25-year waterproofing system. Quote them as separate options with separate timelines and the client will self-select — most pick based on how long they plan to stay.

Line-by-line: the custom tile conversion

One-day conversions: honest pros and cons

The one-day services have real appeal — no demo dust for weeks, no second bathroom needed — and for a clean, standard alcove they do finish in a day. The honest trade-offs: you're getting an acrylic system, not tile; the footprint can't change; and anything hidden (rot, mold, bad plumbing) gets covered, not fixed — most services exclude concealed-damage repair from the flat quote. They're a great fit for rentals, flips, and accessibility-driven speed jobs. They're the wrong bid for a forever-home primary bath where the client wants tile and a 20-year system.

The accessibility angle

A large share of conversions are aging-in-place projects, and they have their own line items: a low-threshold or curbless entry ($500–$1,500 over standard), grab bars ($100–$300 each installed, into blocking — never into tile alone), a fold-down or built-in bench ($200–$600), and a handheld shower on a slide bar ($150–$400). Note the blocking: grab bars need wood blocking in the wall, which means planning their positions before the tile goes up — the single most common retrofit failure is a grab bar anchored to tile with no blocking behind it.

The conversion process, step by step

• 1. Measure and decide the drain. Confirm the alcove dimensions and whether the existing drain can serve the new pan. This decision drives the whole bid.
• 2. Demo. Remove the tub, surround, and any compromised substrate. Inspect for rot and mold — plan the contingency.
• 3. Plumbing. Set the new drain and valve, pressure-test, and get the rough inspection if the permit requires it.
• 4. Waterproofing. Pan liner or bonded membrane, wall membrane, flood test. Non-negotiable and unskippable.
• 5. Tile and grout. Walls, pan floor (small-format tile for slope), niches, then cure time.
• 6. Glass and fixtures. Enclosure measured after tile (never before), valve trim, shower head, caulk, final inspection.

What moves the bid

• Drain relocation: $1,000–$3,000, the single biggest swing. Through-slab moves are the expensive end.
• Glass: a framed slider ($800–$1,500) vs. frameless custom ($2,000–$3,500) — and frameless must be measured after tile, adding a week.
• Tile choice: large-format porcelain walls are fast; mosaics and patterns are slow. The shower floor needs small-format tile for the slope — budget accordingly.
• Concealed damage: the tub you're removing has been leaking for years, probably. Budget 10–15% contingency on every conversion bid.
• Second-bathroom logistics: no second bath means the client needs the shower back fast — that's a scheduling premium, price it.

Costly mistakes to avoid

• Skipping the flood test. Plug the drain, fill the pan, mark the waterline, wait 24 hours. A leaking pan discovered after tile is a $5,000 redo.
• Ordering glass before tile. Frameless glass is measured to the finished tile — order it early and it won't fit. The week of waiting is part of the schedule, not a delay.
• Grab bars into tile only. Blocking in the wall, planned before tile. A bar that pulls out of the wall is a lawsuit, not a callback.
• Converting the only tub in a family home. Flag the resale implication in writing. In a 2+ bath home it's usually a plus; in a one-bath home it narrows buyers.
• Flat-rate bids that exclude concealed damage. The rot behind the old tub is the rule, not the exception. Exclude it in writing or include a contingency — don't pretend it won't happen.
• Wrong pan slope. 1/4 inch per foot toward the drain, minimum. Flat spots pond water and grow mildew; over-sloped pans feel wrong underfoot.

DIY vs. hiring a pro

Conversions split hard on DIY feasibility:

• DIY-friendly: a prefab kit install for a handy homeowner — the kit is designed for it, and the drain usually stays. Demo and haul-away too. Realistic savings: $1,500–$3,000.
• Hire a pro: anything involving the drain or supply lines, the waterproofing system, and all tile work in the wet zone. A leaking DIY shower conversion is the most expensive bathroom mistake there is — it rots the structure below.
• The gray zone: setting the glass enclosure. The panels are heavy, the tolerances are tight, and one dropped panel is a four-figure loss. Most DIYers hand this to the glass company.

Do you need a permit?

Yes, in most municipalities. A tub-to-shower conversion changes the plumbing fixture and the waterproofing system — that's plumbing-permit territory nearly everywhere, typically $150–$500. The permit buys you the rough-plumbing inspection, which is exactly the checkpoint you want on a wet-area rebuild. A kit swap with no plumbing changes sometimes skirts the requirement, but “sometimes” isn't a plan — check with the building department before demo. Unpermitted wet work is the first thing a buyer's inspector flags at resale.

Price the tile work with the tile calculator and send the itemized quote the same day you measure. Conversion clients are usually deciding between two or three methods — the contractor who prices all of them wins the job.