A bathtub installation costs $1,620–$2,240 for a like-for-like alcove swap at BathCalc’s 2026 model rates, $4,100–$5,700 with a tub-and-surround rebuild, and $5,800–$8,000+ for freestanding or walk-in specialty installs. Tub material and plumbing moves move the total most.
| Like-for-like swap | Tub + surround rebuild | Freestanding / walk-in |
|---|---|---|
| $1,620–$2,240 | $4,100–$5,700 | $5,800–$8,000+ |
| Tub unit & materials | $855 |
| Labor (demo, set, connections) | $1,045 |
Range shows the model’s planning allowance for this scope. Hold a 10% contingency for subfloor surprises.
What a bathtub installation costs by project type
Baseline model rates — the same model the calculator runs, before your region and material adjustments.
| Project type | Fiberglass tub | Acrylic tub | Cast iron / steel |
|---|---|---|---|
| Like-for-like alcove | $1,620 – $2,240 | $1,870 – $2,600 | $2,640 – $3,660 |
| Tub + surround rebuild | $4,080 – $5,660 | $4,340 – $6,020 | $5,100 – $7,080 |
| Freestanding / walk-in | $5,780 – $8,020 | $6,040 – $8,380 | $6,800 – $9,440 |
Ranges include removal of the old tub, setting, and plumbing connections in the contiguous U.S. See methodology.
What the tub itself costs (unit only)
| Material | Typical unit price |
|---|---|
| Fiberglass | $200–$1,000 |
| Acrylic | $700–$1,000 |
| Copper | $2,000–$5,000 |
| Stone resin / marble | $1,500–$6,200 |
What moves the price most
- Scope of work. Keeping the walls and drain location keeps it a swap; new surround or a relocated drain multiplies the labor.
- Tub material. Fiberglass to cast iron is a $1,000+ unit jump; natural stone and copper run higher still.
- Specialty tubs. Freestanding, jetted, and walk-in models need extra rough-in, bracing, or a GFCI circuit — $4,000–$15,000+ installed.
- Subfloor condition. Opening an old tub recess regularly surfaces rot — the 10% contingency exists for this.
- Regional labor rates. The same install runs −10% in the Midwest to +18% in the Northeast.
Typical timeline
| Project type | Typical duration |
|---|---|
| Like-for-like alcove swap | 2–3 days |
| Tub + surround rebuild | ~1 week |
| Freestanding / walk-in specialty | 1–2 weeks |
Bathtub installation questions
How much does it cost to install a bathtub?
A like-for-like alcove replacement runs $1,620–$2,240 installed at BathCalc’s 2026 model rates. A tub-and-surround rebuild is $4,100–$5,700, and freestanding or walk-in specialty installs run $5,800–$8,000+.
How much does a walk-in tub cost to install?
$4,000–$15,000+ installed, with $6,000–$10,000 typical. The tub itself is most of the cost, plus a dedicated GFCI circuit and often a larger water heater.
How long does a bathtub installation take?
A like-for-like alcove swap takes 2–3 days; a rebuild with new surround about a week; freestanding and walk-in installs 1–2 weeks including prep.
Is it cheaper to reglaze or replace a bathtub?
Reglazing runs $300–$600 and buys 3–5 years; replacement starts around $1,600 but resets the clock 15–20 years. Reglaze to sell, replace to stay.
Do I need a permit?
Like-for-like swaps usually don't need one. Drain relocation, new circuits, or structural work does — $100–$500, typically pulled by your contractor.
What does moving a bathtub drain cost?
About $2,500 per move — the same rule of thumb as any bathroom fixture — before the new tub is even purchased.
How we price these estimates
Midpoint = install base + material upgrade + selected options, then multiplied by the regional factor. Install bases are $1,900 for an alcove swap, $4,800 for a tub-and-surround rebuild, and $6,800 for a specialty tub. Material upgrades add $0, $300 or $1,200; jets add $1,500; a plumbing move adds $2,500.
These are BathCalc model assumptions, not a survey of contractor bids. The range is 85%–118% of the midpoint, rounded to the nearest $10; it is a planning allowance, not a statistical confidence interval. Regional factors are baseline 1.00, Northeast 1.18, West 1.12, South 0.92 and Midwest 0.90; they do not replace ZIP-code quotes.
Scope reference: Homewyse bathtub installation scope. Reference scopes and dates can differ from this model; the linked page does not independently validate every BathCalc rate. Compare demolition, disposal, waterproofing, tax, permits and structural repairs explicitly when requesting itemized quotes. Model documentation updated . Report a pricing or scope correction.
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