Sink Installation Cost Calculator
Sink Installation costs $285 to $435 for a typical 1 fixtures job in 2026, against a national benchmark of $350. Labor runs 1.9 crew hours at $42.44 an hour. Enter a ZIP code to apply that area's measured wages for this work and its regional price level.
What makes up the price
Cost by size
National averages, before any local adjustment. Computed from the same model as the calculator above, so the two always agree.
| How many | Fixtures | Typical | Range |
|---|---|---|---|
| 1 fixtures | 1 | $350 | $285 to $435 |
| 2 fixtures | 2 | $550 | $440 to $675 |
What it costs
| Total | |
|---|---|
| One sink, straight swap | $350 |
| Replacing the shutoff valves too | $420 |
| Trap or drain work as well | $500 |
| Both | $600 |
| Two sinks on one visit | $275 each |
That is the plumber's time plus a drain assembly, a trap, supply lines, mounting clips or a rim seal, and silicone. The sink is not in it:
| Sink | All in | |
|---|---|---|
| Stainless drop-in, bathroom ceramic | $90–$200 | $440–$550 |
| Good stainless, 16–18 gauge | $200–$400 | $550–$750 |
| Fireclay, cast iron or workstation | $400–$600+ | $750–$950+ |
At 2.4 hours it is the slowest of the four small plumbing jobs, because it is a drain assembly, a trap, two supplies and a seal to the counter — with the old sealant to cut out and the counter to clean before the new one goes down.
Mounting type is not a style choice
It decides who has to be involved and when.
Drop-in, also called self-rimming, has a rim that sits on the counter. It is the only one of the three a plumber can fit on their own into an existing counter, it forgives a cutout that is not perfect, and the rim catches crumbs. It is the cheapest option by a distance and the right answer for a sink being replaced without changing anything else.
Undermount is fixed below the counter, so there is no rim and you can wipe straight into the bowl. In stone or quartz this is a fabricator's job, not a plumber's — the cutout is made in the shop, the inside edge is polished, and the sink is clipped to the underside with epoxy and brackets. In laminate it is usually not possible at all, because the exposed particleboard edge cannot be sealed reliably.
Farmhouse or apron front replaces the counter edge with the front of the sink. It needs the cabinet modified — a cut-down base, usually a support frame built inside it, and the sink set at exactly the right height before the counter goes on. It is a carpentry job with a plumber afterwards.
The practical consequence: if the counter is staying, a drop-in is the straightforward replacement. Anything else means the counter comes into it.
Choose the sink before the counter is templated
This is the sequencing mistake that costs real money, and it happens constantly.
When a stone or quartz counter is made, the sink cutout is cut in the shop from a template taken in your kitchen, using the actual sink. So:
- Buy the sink first, or at least pick the exact model, and have it on site for the template visit.
- A sink chosen afterwards means a cutout made to the wrong dimensions — and a stone counter cannot be enlarged on site without risking the slab.
- An undermount cutout is also a charged item: $100 to $250 for the cut and the polished inside edge, and a second cutout is charged again.
If a kitchen is being redone, the order is: cabinets, sink chosen, counter templated, counter fitted, sink and faucet fitted.
What to look for in a sink
Stainless gauge. The number is a thickness and lower is thicker: 16 or 18 gauge is what you want, and 22 gauge feels like a tin tray and drums under a tap. Good stainless sinks also have sound-deadening pads on the underside, which is the single thing that separates a cheap sink from a pleasant one in daily use.
Bowl configuration. A single large bowl takes a roasting pan; a double bowl lets you wash on one side and drain on the other. Single bowls have become the default in kitchens for a reason, but if you hand-wash dishes a lot, a 60/40 double is more useful.
Depth. Nine to ten inches is standard; some are twelve. A deeper bowl hides more and strains your back at the same time, and in a 30-inch base cabinet it eats the space a disposal needs.
Material. Stainless is forgiving and shows water spots. Fireclay and cast iron are heavy, beautiful, and chip if you drop a pan. Composite granite resists scratching and shows limescale. For bathrooms, vitreous china is the default and perfectly good.
Sound and radius. Zero-radius corners look sharp and are harder to clean than a small radius. Not a big deal either way, but worth knowing before being sold on it.
What goes wrong underneath
The job is slow because this part is unpredictable:
- The old sealant. A sink that has been in twenty years is cemented to the counter with silicone that has gone hard. Cutting it out without damaging a laminate counter is careful work.
- The trap. A plumber replacing a sink will not reuse a twenty-year-old chrome trap — it will not come apart cleanly and will not seal again. It is in the price here.
- The drain height. A new sink with a deeper bowl puts the drain lower, and sometimes below the trap arm in the wall. That means re-plumbing the drain, which is the +45% card.
- The shutoff valves, as always. A multi-turn stop untouched for twenty years often will not reseal once turned.
- The disposal. If one is coming out and going back, the mounting ring on an older unit may not fit a new sink's drain opening.
What you are paying for
One sink, straight swap, at $350:
| Labor, about 2.4 hours | around $140 |
| Drain assembly, trap and clips | $45 |
| The call-out | $75 |
| Overhead and margin | the balance |
Can you do it yourself?
A drop-in into an existing cutout is a realistic DIY job: disconnect, cut the sealant, lift out, clean the counter, fit the new drain assembly and clips to the new sink on the bench, bed it on silicone, lower it in, connect the trap and supplies, test twice.
An undermount in stone is not. It hangs from the underside of the counter on brackets and epoxy, and a sink that lets go takes the plumbing and your crockery with it.
A farmhouse sink is a carpentry job. The cabinet has to be cut down and a support frame built for 60 to 120 pounds of fireclay. Worth paying for.
Two things first-timers get wrong: fitting the drain assembly and the faucet to the sink on the bench before it goes in — infinitely easier than inside a cabinet — and giving the silicone time to set before filling the bowl.
Questions worth asking
- Drop-in, undermount or farmhouse, and does the counter allow it?
- Will the existing cutout take the new sink?
- Is the trap being replaced?
- Will the new bowl depth clear the drain in the wall?
- Are the shutoff valves being replaced?
- Is the disposal being reused, and will its mount fit the new sink?
- What gauge is the stainless, and does it have sound-deadening pads?
- If a counter is being made: is the sink on site for the template?
- Is the old sink being taken away?
- Can the faucet go in on the same visit?
Common questions
How much does sink installation cost?
About $350 for the plumber's time and the parts — a drain assembly, a trap, supply lines, mounting clips and sealant — plus the sink itself at $90 to $600. All in that is $440 to $950. If the trap or the drain needs replacing as well it is $500, and two sinks on one visit come to $275 each.
What is the difference between a drop-in and an undermount sink?
A drop-in has a rim that sits on the counter; an undermount is fixed below it so you can wipe straight into the bowl. The difference that matters is who fits it: a drop-in is the only one a plumber can put into an existing counter alone, and it forgives an imperfect cutout. An undermount in stone or quartz is a fabricator's job — the cutout is made in the shop and the inside edge polished — and in laminate it is usually not possible at all.
Do I need to buy the sink before the countertop is made?
Yes, and this is the sequencing mistake that costs real money. A stone or quartz cutout is made in the shop from a template taken in your kitchen using the actual sink, so the sink has to be chosen — ideally on site — before the template visit. A sink picked afterwards means a cutout made to the wrong dimensions, and a stone counter cannot be safely enlarged on site. The order is cabinets, sink chosen, counter templated, counter fitted, then sink and faucet.
What gauge stainless steel sink should I buy?
16 or 18 gauge, where a lower number means thicker steel. A 22-gauge sink feels like a tin tray and drums under the tap. Just as important is whether it has sound-deadening pads on the underside — that single feature is most of what separates a cheap sink from a pleasant one in daily use, and it is easy to check on a display model by tapping the bowl.
Can a plumber fit a farmhouse sink?
A plumber connects it, but fitting it is carpentry. The base cabinet has to be cut down and usually have a support frame built inside it to carry 60 to 120 pounds of fireclay or cast iron, and the sink has to sit at exactly the right height before the counter goes on. It is worth paying for, and it is worth agreeing in advance who is doing which part — the gap between a cabinetmaker and a plumber is where apron sink projects go wrong.
Will a new sink fit my existing cutout?
A drop-in usually will if the new sink is the same size or very slightly larger, because the rim covers the edge. A smaller sink will not, since the cutout would show. Going from a drop-in to an undermount in the same counter is rarely possible without a new counter, as the cutout edge has to be polished and sealed. Measure the existing cutout and compare it with the new sink's specified minimum cabinet and cutout dimensions before buying.
Single bowl or double bowl?
Single bowls have become the default in kitchens because they take a roasting pan and a baking sheet, which a double cannot. A 60/40 double is genuinely more useful if you hand-wash a lot — wash on one side, drain on the other — and it lets one side keep working while the other is full. Consider the cabinet too: a deep single bowl in a 30-inch base eats the room a disposal needs.
Why does replacing a sink take longer than replacing a faucet?
Because it is four jobs rather than one: a drain assembly, a trap, two supply connections and a seal to the counter. On top of that, a sink that has been in for twenty years is cemented down with hardened silicone that has to be cut out without damaging the counter, and the counter has to be cleaned properly before anything new goes down. A plumber allows about 2.4 hours against 50 minutes for a faucet.
Does the trap need replacing with a new sink?
Almost always, and it is included in the price here. A twenty-year-old chrome trap will not come apart cleanly and will not seal again once disturbed, and a plumber will not stake their call-back on it. A modern PVC trap is a few dollars and will outlast the sink. The related question is whether the drain in the wall is at the right height for the new bowl, which a deeper sink can put it below.
Can I install a kitchen sink myself?
A drop-in into an existing cutout, yes: disconnect, cut the sealant, lift out, clean the counter, fit the new drain assembly and the faucet to the sink on the bench, bed it on silicone, lower it in, connect the trap and supplies, then test twice. Two things first-timers get wrong are doing the drain and faucet after the sink is in rather than before, and filling the bowl before the silicone has set. An undermount in stone and a farmhouse sink are both jobs to pay for.
How deep should a kitchen sink be?
Nine to ten inches suits most kitchens. Twelve-inch bowls hide more dishes and make you bend further, and in a standard 30-inch base cabinet a deep bowl competes for space with a garbage disposal and the trap. If anyone in the house is short or tall enough for it to matter, stand at a display sink and reach into the bottom before choosing.
Should the faucet be replaced at the same time as the sink?
Usually yes, for two reasons. The faucet has to come off anyway, so the labor overlaps almost completely — which is why two fixtures on one visit are much cheaper than two visits. And a new sink may have a different number of holes or spacing than the old one, so an old faucet may not fit it at all. Decide both together and check the hole count matches before either arrives.
Where these numbers come from
Nothing here is copied from a contractor directory. Labor is priced from what the trades are actually paid, materials from published producer prices, and both are adjusted to your area using federal cost-of-living data.
- Plumbing, heating and air-conditioning contractors, United States: $42.44/hour, August 2026 (BLS CES CES2023822003)
- Drain assembly, trap and clips: $45.00 per sink (price recorded October 2026, not index-adjusted)