Bathtub Replacement Cost Calculator
Estimate bathtub replacement costs including removal, new tub, plumbing, and tile work. Compare materials and styles.
Bathtub Replacement Cost Calculator
Calculator
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Formula: Total = (Tub Cost * Material Mult + Removal + Plumbing + Tile + Labor + Permits) * Regional Mult
Worked example — Estimated total: $4,025 (range: $1,950 - $6,100)
Formula
Total = (Tub Cost * Material Mult + Removal + Plumbing + Tile + Labor + Permits) * Regional Mult
The total replacement cost sums the tub price (adjusted by material), removal of old tub, plumbing work scope, tile or surround installation, labor, and permits, then adjusts for regional cost differences.
Worked Examples
Example 1: Standard Alcove Tub Replacement
Problem:Replace a standard alcove bathtub with a new acrylic model, including old tub removal, minor plumbing updates, and a tile surround, in an average-cost area.
Solution:Acrylic alcove tub: ~$600 (avg) Old tub removal: ~$450 Minor plumbing: ~$400 Tile surround: ~$1,400 Installation labor: ~$1,000 Permits: ~$175 Regional multiplier: 1.0x Total = $600 + $450 + $400 + $1,400 + $1,000 + $175 = $4,025
Result:Estimated total: $4,025 (range: $1,950 - $6,100)
Example 2: Luxury Freestanding Tub Upgrade
Problem:Install a stone resin freestanding soaking tub with major plumbing relocation, full-wall tile, in a high-cost metro area.
Solution:Stone resin freestanding tub: ~$6,270 (avg, 2.2x mult) Old tub removal: ~$450 Major plumbing: ~$2,750 Full-wall tile: ~$2,750 Installation labor: ~$1,000 Permits: ~$175 Regional multiplier: 1.4x Total = ($6,270 + $450 + $2,750 + $2,750 + $1,000 + $175) * 1.4 = $18,753
Result:Estimated total: $18,753 (range: $9,730 - $28,980)
Frequently Asked Questions
How much does it cost to replace a bathtub on average?
The average bathtub replacement costs between $2,500 and $7,000 for a standard alcove tub, including removal of the old tub, new tub purchase, installation, basic plumbing, and surround tile work. A budget-friendly fiberglass alcove tub replacement can be done for as little as $1,500 if plumbing remains unchanged and you use a prefabricated surround instead of tile. On the high end, a freestanding cast iron or stone resin soaking tub with full wall tiling and plumbing relocation can cost $10,000 to $15,000 or more. The tub itself typically represents 15 to 30 percent of the total project cost, with labor and finishing work accounting for the majority. Regional labor rates significantly impact the final price, with metropolitan areas costing 30 to 50 percent more than rural areas.
What factors most affect bathtub replacement cost?
The biggest cost drivers are the tub type and material, scope of plumbing work, and tile or surround installation. Switching from a standard alcove tub to a freestanding model often requires plumbing relocation, which alone can add $1,500 to $4,000. Tile work is frequently the largest single expense, especially if you opt for full-wall natural stone or large-format porcelain tiles that require waterproofing membranes and specialty installation. Structural modifications, such as reinforcing floor joists for a heavy cast iron tub or widening doorways for a walk-in tub, add substantial costs. Plumbing age matters too, as older homes with galvanized or corroded pipes may require extensive pipe replacement once walls are opened. Accessibility features like grab bars and non-slip surfaces add $300 to $1,500.
Should I choose a bathtub liner or full replacement?
A bathtub liner, which is a custom-molded acrylic shell placed over your existing tub, costs $1,500 to $3,000 and takes one to two days to install. This option works when the existing tub structure is sound but the surface is stained, scratched, or dated. Full replacement costs more but is necessary when the tub is cracked, the plumbing is old, you want to change tub size or style, or there is water damage or mold behind the walls. Liners have a lifespan of 10 to 15 years versus 20 to 50 years for new tubs. Liners can also trap moisture between the liner and old tub surface, potentially leading to mold issues. For homes being prepared for sale, a full replacement generally provides better return on investment than a liner.
How long does a bathtub replacement project take?
A straightforward alcove tub swap with a prefabricated surround and minimal plumbing changes typically takes 2 to 3 days for a professional crew. If tile work is involved for a standard three-wall surround, expect 4 to 5 days including tile setting and grouting cure time. More complex projects involving plumbing relocation, structural modifications, or full bathroom tile work can extend to 1 to 2 weeks. Walk-in tub installations often take 2 to 3 days due to the specialized plumbing and electrical requirements. During the project, your bathroom will be out of commission, so plan to use another bathroom. Weather can impact timelines if materials need to be delivered, and permit inspections may add waiting periods between project phases.
What are the best bathtub materials for durability and value?
Acrylic is the most popular choice, offering excellent value with a 15 to 20 year lifespan, lightweight construction for easy installation, good heat retention, and resistance to cracking and fading. It is available in virtually any shape and color. Fiberglass is the most budget-friendly at 30 percent less than acrylic but is less durable with a 10 to 15 year lifespan and is prone to surface cracking and fading. Cast iron with enamel coating is the premium traditional option, lasting 50 or more years with exceptional heat retention and a classic deep finish, but weighing 300 to 500 pounds it may require floor reinforcement. Stone resin offers a modern luxury look with excellent durability and heat retention at a premium price. For most homeowners, acrylic provides the best balance of cost, durability, design options, and ease of maintenance.
What is the difference between an alcove, drop-in, and freestanding installation?
An alcove tub is framed on three sides by walls and has one finished apron facing the room, which is why it is the cheapest to install: the walls hide the plumbing and the surround does the waterproofing. A drop-in tub is a shell with no finished side, lowered into a framed and tiled deck that you must build, so carpentry and deck tiling add cost. A freestanding tub is finished on all sides and stands clear of the walls, which usually forces the supply and drain to move to a floor-mounted or exposed feed. That relocation is the main reason freestanding conversions jump into the moderate or major plumbing tier.
Does a cast iron tub need extra floor framing?
A cast iron tub commonly weighs 300 to 500 pounds empty, and a filled 60-inch tub holds roughly 40 gallons at about 8.34 pounds per gallon, so the loaded weight with an occupant can approach half a ton, on the order of 900 to 1,000 pounds concentrated over a small footprint. On a typical wood-framed floor that is often within capacity, but joists that are undersized, long-spanning, notched for old plumbing, or weakened by past leaks may need sistering or added blocking. Have the framing inspected before purchase, since reinforcement is far cheaper while the floor is already open for the swap.
Why does the tile surround often cost more than the tub itself?
Tile is priced by labor-hours and waterproofing, not just by the tile. A proper wet-wall build-up means cement backer board or a foam panel, a bonded waterproof membrane, thinset, tile setting, and grouting, with cure time between steps. Large-format or natural stone tile adds substrate flatness work and slower setting, and every inside corner needs flexible sealant rather than grout. Because those hours scale with tiled area, moving from a three-wall surround to a full-wall or floor-and-wall scope multiplies the line item while the tub price stays fixed.
When is a permit and inspection required for a tub replacement?
Rules are set locally, so check with your building department rather than assuming. As a general pattern, a like-for-like swap that reuses the existing drain, trap, and supply connections is often treated as a repair, while work that relocates or extends drain, vent, or supply piping, opens structural framing, or adds electrical for a jetted or walk-in tub typically triggers a plumbing or building permit. Permits matter beyond compliance: unpermitted plumbing work can complicate a homeowner's insurance claim after a leak and can surface as a defect during a resale inspection.
How should I decide between keeping a tub and converting to a walk-in shower?
Keep at least one bathtub in the home if you have young children or expect to sell to family buyers, since many buyers treat a tubless house as a drawback. Favor a walk-in shower when mobility is the concern and stepping over a 15-inch tub wall is already difficult, or when the tub is never used for bathing. A walk-in tub is the middle path, offering a low threshold door and a seat, but it costs considerably more than a standard tub and adds a sealed door and faster fill and drain requirements. Bathtub Replacement Cost Calculator's accessibility toggle covers grab bars and non-slip work on any of these paths.
References
Reviewed for accuracy by Daniel Agrici, Founder & Lead Developer · Editorial policy
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