This guide will not give you an average, because the average is the reason you are still searching. It gives you a ledger instead: the ten lines that make up a bathtub installation, what each one costs according to a named and dated source, and a way to total the ones your bathroom actually contains.
Every dollar figure below traces to a source that is named where it is used, with the date it was published and the date it was retrieved. Where no source publishes a number, this guide says so and leaves the line unpriced rather than filling it in. Two of the most expensive surprises in this job fall into that category.
One thing worth stating early, because it shapes everything that follows. Badeloft manufactures bathtubs. It does not install them, does not subcontract installation, and earns nothing whether your install comes to $2,000 or $12,000. Every other page competing for this search is written by a company that performs the work, sells the lead, or sells the tub and would prefer the installation look inexpensive. This one has no number it wants you to accept.
What this covers: the job of getting a tub out, a tub in, and the water flowing. What it does not cover is a full bathroom remodel, a like-for-like swap of one alcove tub for another, or converting a tub into a shower. Those are three different jobs with three different price structures, and each has its own guide, linked at the end.
Three people usually arrive here. The first is holding a quote and cannot tell whether it is fair, because there is nothing to check it against. The second is choosing between a freestanding tub and a built in one and has worked out that the installation difference matters more than the tub difference. The third is putting a tub where no tub has ever been, and has been told a number that sounded like it was made up on the spot.
By the end you will have a figure built from your own bathroom, a list of the lines a contractor should be quoting separately, and two questions that will tell you within a minute whether the person quoting you has actually thought about your floor.
The order is: why the published averages disagree, the ledger itself, the four lines a freestanding tub adds, what the tub costs relative to the job, where the labor hours go, three worked bathrooms, the code line nobody mentions, permits, what you can do yourself, and how to read the quote.
Start with the averages, because they are the reason none of this is obvious.
Why Every Published Bathtub Installation Average Disagrees With Every Other One
Four cost sources, all retrieved on 2 September 2026, all publishing a national figure for installing a bathtub in an American home.
| Source | Published figure | Date on the page | What it is actually averaging |
|---|---|---|---|
| Homewyse | starts at $1,388 to $2,443 per tub | May 2026 | Setting a tub with the connections where they already are. Unit costs for the fixture and the labor to hook it up. |
| This Old House | $2,100 average | Updated 03/05/2026 | Materials, labor and removal of the old tub. An alcove swap, essentially. |
| Badeloft's own replacement guide | $5,600 national average | 2026 | A full replacement including surround and fixtures. The page does not show a source for the figure. |
| HomeAdvisor | $5,923 average, normal range $2,102 to $9,745 | Updated June 20, 2026 | Every tub type pooled together, freestanding and walk in included, drawn from contractor-submitted job data. |
That is a 4.3x spread between the lowest headline figure and the highest, for the same four words typed into the same search box. None of the four is wrong. They are averaging different jobs.
Homewyse is pricing a fixture swap. This Old House is pricing an alcove replacement where the plumbing stays put. HomeAdvisor is pooling every kind of tub install its contractors report, so freestanding tubs on slab foundations and walk-in tubs with dedicated circuits are inside the same average as a $400 fiberglass unit dropped into an existing recess.
The practical consequence: there is no average you can apply to your bathroom. There is only your bathroom, and the lines it contains.
The Installation Ledger, Line by Line
Ten lines. Some of yours will be zero. The ones that are not zero are where the money is, and the sources for each band are named in the right-hand column so you can check any of them.
| # | Line | Published range | Source |
|---|---|---|---|
| 1 | The tub itself | $200 to $10,000 and beyond | This Old House gives $200 to $800 for a standard tub and $2,500 to $10,000 for a freestanding one. Block Renovation gives $2,000 to $8,000 for stone resin and $1,500 to $5,000 for cast iron. |
| 2 | Removing the old tub and hauling it away | $200 to $1,200, or $350 to $4,500 if walls and tile come out with it | This Old House for the first band, HomeAdvisor for the second. |
| 3 | Moving the drain | $500 to $1,500 on a framed floor, $1,000 to $3,000 on a slab | Block Renovation. HomeAdvisor gives $400 to $1,900 for plumbing relocation generally, which brackets the framed figure. The assembly itself is covered in the guide to how a bathtub drain goes together. |
| 4 | Filler and water supply | $0 if you reuse the existing valve. $300 to $2,000 for the fixture. Add $400 to $900 if supply has to be roughed in through the floor. | Block Renovation. |
| 5 | Floor structure | $300 to $1,200 for reinforcement. $4,000 to $12,000 if joists or subfloor need repair. | Block Renovation for the first, HomeAdvisor for the second. HomeAdvisor gives $300 to $800 for reinforcement, a narrower band than Block Renovation's. |
| 6 | Floor finish around the tub | $200 to $600 to patch, $800 to $3,500 for a new bathroom floor | Block Renovation. Sequence matters here, and the question of whether the floor or the tub goes in first changes what this line costs. |
| 7 | Surround or tiled walls | $1,100 to $2,100 installed, $1,550 to $3,200 for cultured marble | This Old House. Applies to alcove and drop-in tubs. Usually zero for a freestanding tub. |
| 8 | Hot water capacity | $800 to $2,500 to upgrade | Block Renovation. Whether you need it depends on your tub's capacity against what your heater can actually deliver. |
| 9 | Permit and inspection | $50 to $500 for plumbing, $10 to $500 for electrical | This Old House and HomeAdvisor agree on both. |
| 10 | Installation labor | $100 to $2,000 generally. $800 to $3,000 for most full freestanding installs. | This Old House and HomeAdvisor for the first, Block Renovation for the second. |
Two lines are missing from that table on purpose. Getting the tub into the room, and building the access opening the code requires at the drain. Neither appears with a dollar figure in any cost guide retrieved for this piece. Both are covered below, priced in the only honest unit available, which is hours.
The calculator below totals whichever of the ten lines apply to you and shows the source against each one.
Four Line Items a Freestanding Tub Adds That an Alcove Tub Does Not
The choice between an alcove tub and a freestanding one is usually made on how the bathroom will look. It is also, quietly, the largest cost fork in the project, and not because of the tub. It is because an alcove tub borrows four things from the walls around it, and a freestanding tub borrows none of them.
A homeowner on Houzz put the question plainly: is a $1,000 extra charge for installing a freestanding tub normal? Here is what that charge is usually made of.
1. The drain has to come to the tub
An alcove tub's waste outlet sits at one end, against a wall, roughly where the last tub's outlet sat. A freestanding tub's outlet is under the middle of the tub, in open floor. The two almost never line up.
On a framed floor the waste line runs between joists, so the cost depends on whether the new outlet lands in a bay or on top of a joist. Parallel to the joists is cheap. Across them is not. Block Renovation puts that work at $500 to $1,500.
On a slab the line is buried in concrete. Moving it means cutting the slab, trenching, re-running and patching, which is why the same source puts slab relocation at $1,000 to $3,000 and upward. This is the single biggest reason ground-floor and condo installs come in higher than upstairs ones, and it is the exact scenario behind the Houzz threads about slab homes and high-rise concrete floors.
2. The filler needs its own rough in
An alcove tub uses a valve in the wall behind it. A freestanding tub has three filler options, and they do not cost the same to install. A wall-mounted filler can often reuse supply that already runs in that wall. A deck-mounted filler sits on the tub rim or a plinth. A floor-mounted filler, the tall freestanding kind most people picture, needs hot and cold brought up through the floor at an exact location, decided before the tub is set and before the floor finish goes down.
Block Renovation prices the fixture at $300 to $2,000 and the supply rough in at $400 to $900. Get the location wrong and it is not a $400 fix, because the floor is finished by then.
3. The floor carries the load with no wall to help
An alcove tub transfers a good part of its weight into the framing at its ends. A freestanding tub stands on its own base in the middle of the room, so the whole filled weight lands on a small footprint.
The arithmetic is simple and worth doing. Water weighs 8.34 pounds per gallon. A 72 gallon tub holds about 600 pounds of water. Add the tub, which for a stone resin tub is a few hundred pounds, and a bather at 200, and you are near 1,100 pounds over roughly 13 square feet. That is about 84 pounds per square foot.
The number to compare it against is 40 pounds per square foot, the minimum design live load for habitable rooms other than bedrooms in Table R301.5 of the International Residential Code. Exceeding it over a small area does not mean the floor is failing. Live load is a uniformly distributed design assumption with a safety factor built in, and bathroom framing routinely carries tubs. It does mean you are outside what the span tables assumed, and only someone who can see your joists can tell you whether that matters. Reinforcement between joists runs $300 to $1,200 according to Block Renovation, and $300 to $800 according to HomeAdvisor. Both are small numbers. Discovering you need it after the floor is finished is not.
4. The waste connection has to stay reachable
This one is a code requirement rather than a preference, and it is the least-quoted line in the whole job. It gets its own section below.
The check below prices the first three of these for your specific tub and floor, and rules on the fourth.
What the Tub Itself Costs, and Why It Is the Line You Control Least
Most people spend weeks choosing the tub and an afternoon choosing the contractor. The ledger suggests that is backwards.
On a straightforward freestanding install, the tub is roughly a third of the midpoint total. On an alcove swap with a builder-grade tub, it can be under fifteen percent. The rest is the job, not the object, and the job is priced by decisions about your floor that the tub has no say in.
For a real reference point rather than a range: the 24 models in the Badeloft freestanding collection listed at $3,290 to $3,590 on 2 September 2026, with capacities from 62 to 140 gallons. A $300 spread across an entire catalog, next to a drain relocation line that can swing $2,500 on its own, tells you where the leverage in this project actually sits.
Material is the one part of the tub price worth studying, because material drives weight and weight drives line 5. The economics of freestanding tub pricing are covered separately.
Labor, and Where the Hours Actually Go
Two sources agree closely on trade rates, which is unusual enough to be worth noting.
| Trade | Hourly rate | Source |
|---|---|---|
| Plumber | $45 to $200 | This Old House and HomeAdvisor, independently |
| Electrician | $50 to $100 | HomeAdvisor |
| Plumber | $50 to $200 | Badeloft's own guide to hiring for this work |
| Handyman | $60 to $125 | Badeloft's own guide to hiring for this work |
Three independent sources landing on roughly $50 to $200 an hour for a plumber is about as solid as consumer cost data gets. What to ask a plumber before hiring one is covered separately.
Where the hours go, in rough order: demolition and removal, drain rough in, supply rough in, structural work if any, setting and leveling, connection, floor and finish work, and inspection. On most jobs the plumber is on site for two separate visits, rough in and final connection, with everyone else in between. That is why a tub install stretches across days rather than filling one of them, and why the labor band is wide.
The line that reliably escapes every quote is getting the tub into the room. No cost guide retrieved for this piece prices it. A tub of 250 to 550 pounds, a stair, a landing turn and a 30 inch door casing is a real problem with a real cost, and it is worth asking for as its own line, in hours, before anyone is standing in your hallway with it.
Three Bathrooms, One Tub, Three Very Different Totals
Same $3,390 tub in the first two. The totals below reconcile exactly with the calculator above, so you can reproduce any of them.
| Upstairs hall bath | Ground floor on slab | Alcove for alcove | |
|---|---|---|---|
| The job | Alcove tub out, freestanding tub into the same corner. Framed floor. Drain moves a short distance. Existing wall filler reused. Tile patched where the old tub sat. | New tub where none existed. Slab foundation. Floor-mounted filler. New floor across the room. Heater upgraded for a 140 gallon tub. | Builder-grade alcove tub replaced like for like. Nothing moves. New tiled surround. |
| Tub | $3,390 | $3,390 | $600 |
| Removal | $200 to $1,200 | nothing to remove | $200 to $1,200 |
| Drain | $500 to $1,500 | $1,000 to $3,000 | stays put |
| Filler and supply | reused | $700 to $2,900 | reused |
| Floor structure | none needed | slab, not applicable | none needed |
| Floor finish | $200 to $600 | $800 to $3,500 | untouched |
| Surround | none | none | $1,100 to $2,100 |
| Hot water | existing heater | $800 to $2,500 | existing heater |
| Permits | $50 to $500 | $60 to $1,000 | $50 to $500 |
| Labor | $800 to $3,000 | $800 to $3,000 | $100 to $2,000 |
| Total |
$5,140 to $10,190 midpoint $7,665 |
$7,550 to $19,290 midpoint $13,420 |
$2,050 to $6,400 midpoint $4,225 |
The third bathroom costs less than a third of the second, and the tub accounts for under a fifth of that difference. Everything else is floor, drain and supply. If your budget is fixed and your heart is set on a freestanding tub, the lever that moves is not the tub. It is where you put it.
Worth noting on the middle column: it sits above HomeAdvisor's normal range and inside its luxury tier, and every line in it is ordinary. Nothing there is an upgrade. That is what a slab, a new drain run and a floor-mounted filler cost when they stack.
The 12 Inch Opening Your Quote Does Not Mention
Residential plumbing code requires that slip-joint connections be accessible. The wording, from Section P2704.1, is that the access "shall provide an opening that is not less than 12 inches in its smallest dimension".
A freestanding tub's waste and overflow assembly sits under the tub, on the floor, hidden by the tub's skirt or base. If there is no basement or crawl space beneath it, and no opening is built, that connection is sealed inside the floor assembly. When it eventually leaks, and slip joints eventually do, the way to reach it is through the finished floor.
None of the cost guides retrieved for this piece prices an access opening. Not one. It is a small carpentry item when it is planned and a large one when it is not, and the reason it goes unquoted is that it falls between the plumber and the finish carpenter.
Two questions, and the answers tell you a lot about whoever is quoting you. Where is the access to the tub waste connection, and who is building it. A contractor who answers immediately has done this before. One who has to think about it has not.
Permits, Inspection, and What Skipping Them Costs Later
Moving a drain line is permitted work in most jurisdictions. Setting a tub back on an existing drain frequently is not. This Old House and HomeAdvisor both put a plumbing permit at $50 to $500, and an electrical permit, needed for a jetted, heated or walk-in tub, at $10 to $500.
Which category your job falls into is local, and the guide to which bathroom work needs a permit covers how to find out.
The case for pulling one is not really the fine. It is that unpermitted plumbing work surfaces during a sale, an inspection or an insurance claim, at a moment when you have no leverage and no time. A permit is a few hundred dollars now against an unknown number later, and the inspection is a free second opinion on work you cannot see once the floor is down.
Which Parts You Can Actually Do Yourself
The useful question is not whether to do it yourself. It is which lines you can take off the quote without taking on risk you cannot price.
Genuinely doable. Removing the old tub, which is line 2, a $200 to $1,200 item. Hauling it away. Demolition of the old surround. Clearing the room and protecting the route in. On the ledger those are real savings for a weekend and a truck.
Doable with care. Setting and leveling the tub, if the drain and supply are already correct and the tub is light enough to move safely. The step by step for setting a freestanding tub walks through what that involves.
Not worth it. Anything on lines 3, 4 or 5. Drain relocation, supply rough in and structural work are the three items where a mistake is hidden, expensive and often not covered. They are also the three that an inspector will look at. A leak inside a floor assembly is the single most expensive outcome available in this project, and it is reached by saving a few hundred dollars in labor.
How to Read an Installation Quote Before You Sign
A quote that says "install freestanding tub, $6,500" is not a quote. It is a number. Ask for these as separate lines and compare bids line by line rather than total by total.
- The tub, listed by model, with the price you are being charged for it.
- Removal and disposal of the old tub, stated separately from installation.
- Drain relocation, with the distance it moves and whether the run crosses joists or the slab is being cut.
- Filler type and supply rough in, with the filler location dimensioned on a drawing rather than described.
- Any structural work, with what triggered it.
- Floor finish, patch or full, with the material named.
- Access to the waste connection, with a location.
- Permit, who pulls it, and whether the fee is in the number or extra.
- Delivery and access into the room, in hours.
- Labor, by trade, with an estimate of days on site.
Two bids with the same total and different line structures are quoting different jobs. The one that has thought about line 7 and line 9 is usually the one that has done this before, and it is often the higher of the two for exactly that reason.
What This Guide Does Not Price
Three adjacent jobs get confused with this one, and each costs differently.
- Replacing a bathtub is a like-for-like swap where the drain, supply and surround mostly stay. It has its own price structure and a city-by-city breakdown.
- Converting a tub to a shower removes the tub rather than installing one, and adds waterproofing, a pan and glass. Different lines entirely.
- A full bathroom remodel absorbs the tub install into a much larger scope, where the drain is already open and the floor is already coming up. The marginal cost of the tub inside a gut remodel is far lower than any figure on this page.
If you are doing one of those three, the figure you want is on one of those pages, not this one.
Planning the Install Around the Tub You Actually Want
The order that saves money is the reverse of the order most people follow. Decide where the tub goes and how it will be filled, get the drain and floor questions answered while the floor is still open, and choose the tub last, because by then you know what it has to weigh and where its outlet has to be.
Every tub in the Badeloft freestanding collection publishes its capacity and dimensions, which are the two numbers the surcharge check above needs and the two your contractor will ask for. Fillers are worth choosing at the same time rather than later, because the filler decides where the supply comes up through the floor and that decision has to be made before anything is closed.
Take the ledger to the walkthrough. A contractor who can price every line on it is quoting your bathroom. One who gives you a single number is quoting an average, and you already know what those are worth.