Kitchen Sink and Tap Cost NSW 2026 - Get Free Quotes

Sink and Tap Costs in NSW

A basic stainless sink paired with a standard mixer starts around $400 supplied, while a fireclay farmhouse sink with designer tapware and a boiling water system runs past $4,000 before anyone touches a spanner. The sink itself sits between $150 and $1,200 depending on material and size, and the tap between $150 and $600 for a conventional mixer. Those two numbers are the part most people research, and they are also the part that varies least between suppliers. If this sits inside a larger project, the whole-of-kitchen picture is at kitchen renovation costs.

Installation labour depends almost entirely on what is already there. Dropping a new sink into an existing cutout with the existing waste and supply lines in place is a short visit, while a new sink in a new benchtop pulls in the fabricator for the cutout, the plumber for the connections and sometimes an electrician for a filtered system. That difference can be several hundred dollars on otherwise identical products. Which of the two applies to your kitchen is the first thing to pin down, before any prices get compared.

Most households underestimate the tap and overestimate the sink, which is the wrong way around. A cheap tap fails at the cartridge within a few years and starts dripping or grinding, while a mid range stainless sink will comfortably outlast the kitchen it sits in without any attention at all. Given a fixed budget for both, the money is better spent on tapware. That single reallocation is the most useful thing in this guide for most people.

There is also a hidden cost in the fittings that never makes it into the headline price. Basket wastes, plugs, traps and connection hardware add $50 to $300, and whether they are included varies from supplier to supplier without any obvious pattern. Two quotes that look $200 apart can be identical once the fittings are added to the cheaper one. Establishing what is actually in the box makes any comparison mean something.

The Cabinet Underneath

The sink determines the cabinet it sits in, not the reverse, and this is the sequencing point that catches people out. Bowl width sets the minimum cabinet size, so a 900 millimetre double bowl simply will not go into a 600 millimetre cabinet no matter how the elevation was drawn. Order the cabinets without settling the sink and the decision gets made for you by whatever will physically fit. Deciding at cabinet stage costs nothing and deciding afterwards costs a cabinet.

Bowl depth quietly consumes the storage beneath. A deep bowl looks generous from above and removes a substantial slice of usable cupboard space below, which matters enormously in a kitchen that is already short on storage and barely at all in one with a butler's pantry. Work out what you actually keep under the sink before settling on a depth. Cabinet pricing and internal fitout options are covered at kitchen cabinet costs.

Heavy sinks need a cabinet built from the outset to carry them. Fireclay and some of the larger composite sinks weigh enough that standard carcass construction is not sufficient, and the additional support has to be specified when the cabinet is made. A cabinetmaker told about the sink in advance will handle this without comment. One told on installation day will improvise, and improvised support is where sagging benchtops come from.

Farmhouse and apron front sinks need a cabinet built specifically for them. The front face of the sink is on show instead of sitting behind a door, so the cabinet has to be designed around that specific sink with the correct cutout height and a supporting deck at the right level. These are not adjustments to a standard unit. If an apron sink is the plan, the cabinetmaker needs the model number early.

The cupboard under the sink also holds far more than most plans allow for. Waste plumbing, the dishwasher connection, a water filter, sometimes a boiling water tank and usually a bin all compete for the same shallow space behind the door. Anything mounted in there reduces what is left for storage. A second sink elsewhere takes the pressure off entirely, which is one argument for butler pantry costs.

Access panels and pull out bins are worth thinking about at the same time. A bin unit under the sink has to clear the waste trap, and a trap positioned without reference to the bin will foul it, which is the kind of small conflict that only appears once everything is installed. Mention both to the plumber before the rough in. It takes one sentence and saves a rework.

Stainless Steel Sinks

Stainless at $150 to $800 remains the default kitchen sink, and for good reason. It shrugs off heat, resists staining, tolerates almost anything a domestic kitchen can produce and does not require any particular care to keep looking acceptable. Nothing else in this category is as forgiving of ordinary neglect. For a rental, a resale renovation or a household that would rather not think about the sink again, it is difficult to argue against.

Gauge is the specification that separates a cheap stainless sink from a good one. Thicker steel gives a solid note when something is dropped in it, resists denting under a heavy pot and simply feels more substantial in daily use, and that is most of the difference between a $200 sink and a $600 one. Suppliers do not always publish the gauge. If it is not stated, that absence usually tells you which end of the range you are looking at.

Sound deadening pads on the underside make a genuine difference to how a kitchen feels. Without them every dropped utensil and every burst of running water resonates through the bowl, which is a small irritation repeated several times a day for years. The pads cost the manufacturer very little, so leaving them out is a deliberate cost saving on a budget product. A quick look at the underside of the display sink in the showroom settles it.

A brushed or satin surface hides marks in a way a mirror polish never will. Water spotting and the fine scratches that every stainless sink accumulates are close to invisible on a brushed surface and obvious under a mirror finish, particularly in a kitchen with downlights above the sink. This is a purely practical choice with no real cost difference. Almost everyone is happier with brushed after a year.

Stainless does scratch and there is no avoiding it. What saves it is that the scratches accumulate evenly into a patina, so after a decade a stainless sink reads as worn in and not as damaged. Harder materials that resist scratching often show the one mark they do get much more starkly. Prep sinks dropped into an island are a separate line, priced at kitchen island costs.

Corner radius affects cleaning more than it affects appearance. A tight square corner looks contemporary and traps food residue and grime that needs a brush to shift, while a slightly radiused corner wipes out completely with a cloth. The visual difference between the two is minor and the maintenance difference is not. When comparing sinks, the corners tell you more than the overall shape does.

Granite Composite Sinks

Granite composite at $300 to $1,200 blends crushed stone with resin to produce a hard matte surface. It resists scratching and heat considerably better than the modest price step above stainless would suggest, and the surface has a depth and solidity that moulded materials usually lack. The bowl absorbs sound instead of amplifying it. For a kitchen that gets heavy daily use it is a genuinely durable option.

Colour is the main reason most people choose composite. It comes in blacks, greys, creams and sands that stainless cannot offer, and a sink matched or deliberately contrasted against the benchtop reads as a considered decision and not a default. In a kitchen where the benchtop is the feature, a matching sink lets it run uninterrupted. Benchtop material choices that pair with this are set out at kitchen benchtop costs.

Darker composites show water marks and limescale more than lighter ones. In a hard water area a black sink needs wiping dry to keep looking black, otherwise it develops a chalky film that reads as dirt even when the sink is clean. That is a thirty second habit and hardly a maintenance burden. It is still worth knowing before choosing black in a district with hard water.

Composite sinks are heavy and the weight has consequences. Both the cabinet and the mounting method have to account for it, particularly in an undermount installation where the benchtop carries the load through the adhesive and the brackets. A fabricator will specify the support they want. Following that specification matters more with composite than with stainless.

Very hot cookware straight off the burner is the one real caution with composite. Boiling water from a kettle is not a problem and manufacturers rate the material well above that, but a cast iron pan taken directly from a hot stove and set in the bowl can leave a mark. Run the tap before putting a hot pan down. That habit covers almost every scenario the material struggles with.

Chips in composite behave differently from dents in stainless. The material is consistent in colour through its thickness so a chip does not show as a bright spot the way a chipped enamel sink does, but it also cannot be polished or worked out the way a stainless mark can. Repair kits exist and produce a reasonable result, though never an invisible one. The material is durable without being indestructible, and it pays to think of it that way.

Ceramic and Fireclay

Ceramic and fireclay at $400 to $1,200 deliver a deep glossy finish that neither stainless nor composite can approach. The glaze is the entire appeal, and in a period, federation or country kitchen it is frequently the piece the rest of the room is built around. Nothing else in this category has the same presence. It is a design decision more than a practical one, and that is a perfectly reasonable basis for choosing it.

Fireclay is fired at a higher temperature than standard ceramic, and that difference matters. The extra heat fuses the glaze more completely into the body, producing a harder surface that resists chipping and crazing noticeably better over a long life. In a working kitchen the price step from ceramic to fireclay usually pays for itself. In a second sink or a laundry the cheaper option is easier to justify.

These sinks are genuinely heavy in a way that surprises people handling one for the first time. A large fireclay sink needs two people to lift and a cabinet designed to carry it, and the installation takes longer than a stainless equivalent for that reason alone. The extra labour belongs in the quote, since this is not a like for like installation cost. Higher end fitouts that carry this kind of labour are at luxury kitchen renovation costs.

The glaze can chip under a heavy impact and that is the material's real vulnerability. A dropped cast iron pan or a heavy stoneware dish will mark a fireclay sink in a way it would never mark stainless, and the repair is a filler job at best. Households that cook with heavy cookware should weigh this honestly. It is not a reason to avoid fireclay, only a reason to choose it knowingly.

Metal cookware can also leave grey marks on the glaze through simple rubbing, with no impact involved. These look alarming and are usually surface deposits with no damage beneath, coming off with a gentle cream cleaner and a little patience. Knowing that saves a certain amount of panic in the first month. Harsh abrasives will dull the glaze permanently and should stay away from it.

Farmhouse and butler sinks are usually fireclay and usually the centrepiece of the kitchen. If that look is the reason for the renovation, the sink justifies the purpose built cabinet and the extra installation labour that comes with it. If it is a late addition to an otherwise contemporary kitchen, the cost is harder to defend. Which of those two situations you are in tends to decide whether the price is defensible.

Undermount and Top Mount

Top mount sinks drop into a cutout with the rim sitting on the benchtop surface. That rim covers a slightly imprecise cutout, which makes the installation simpler, cheaper and compatible with any benchtop material including standard laminate. It is the pragmatic choice and by far the most common. The visible rim is the only real drawback, and in most kitchens nobody notices it.

Undermount sinks sit beneath the benchtop with no rim at all, so the machined benchtop edge becomes the visible edge of the bowl. That lets you sweep crumbs and water straight off the bench into the sink without a lip catching them, which is a small daily pleasure and the main practical reason people choose it. The look is cleaner and more contemporary. It costs more in both fabrication and product.

Undermount requires a benchtop material that can carry an exposed cut edge. Stone, engineered stone and solid surface all work, while standard laminate generally does not because the exposed particleboard core will swell once water reaches it. Some specialist laminate products are rated for it. Put the question to the benchtop supplier directly, because this failure is slow, invisible and expensive.

The fabricator needs the physical sink in hand before templating an undermount installation. The cutout is machined to that specific bowl with the correct offset, so the sink has to be purchased, delivered and sitting there at the measure, well before the plumber arrives. This is the single most common sequencing failure in kitchen fitouts. The sink is worth ordering early even while everything else is still being decided.

That sequence is not reversible once the benchtop is cut. Once the stone is machined to one bowl, a different model will not drop into it, and correcting it means paying for the benchtop a second time. The cost difference between those two outcomes is substantial. Stripping out and starting again is the expensive alternative, priced at kitchen demolition costs.

Flush mount is the third option and the most demanding. The sink sits perfectly level with the benchtop surface with a fine reveal all round, which requires precise fabrication and a tolerance most workshops charge a premium to hold. Done well it is the best looking of the three. Done poorly the reveal is uneven and reads worse than a plain top mount.

Bowl Configuration

A single large bowl suits households that regularly wash bulky items. Roasting trays, oven racks, baking sheets and stockpots all fit comfortably in one large bowl and none of them fit at all in a divided one, which is why single bowls have become the default in new kitchens. The trade off is that you cannot separate washing from rinsing. For most households with a dishwasher that separation no longer matters.

Double bowls exist for the habit of washing in one side and rinsing in the other. That workflow made sense before dishwashers were standard and still suits people who prefer to hand wash, and it also allows one bowl to be used while the other holds soaking dishes. Each bowl is necessarily smaller than a single equivalent. The workflow is the reason to choose it, and the extra bowl only looks more capable.

One and a half bowl configurations attempt to have both and partly succeed. The large bowl handles bulk items while the small one takes rinsing, food scraps or a colander, which works well provided you understand that the small bowl is genuinely small and not a second usable sink. In a compact kitchen it can be the best compromise. In a large one a single bowl plus a separate prep sink is usually better.

Integrated drainer boards take bench space that many kitchens cannot spare. A drainer adds several hundred millimetres to the overall sink length, which in a galley or a small kitchen is space that could have been usable bench. Weigh it against a drying rack that can be put away. Where bench space is the binding constraint, see small kitchen renovation costs.

Accessories increasingly replace the drainer altogether. Racks, cutting boards and colanders sized to sit across the bowl turn the sink into working bench space when it is not full of dishes, which in a compact kitchen is worth more than a fixed drainer ever was. These typically run $50 to $200 for a matched set. Buy them with the sink, since sizing is model specific.

Bowl depth is worth thinking about physically, not as a line on a specification sheet. A very deep bowl means bending further to reach the bottom every time you wash something, which over years of daily use matters to some people considerably and to others not at all. Try reaching into a display sink in a showroom. It is a more useful test than reading the millimetres.

Mixer Taps

Standard mixer taps at $150 to $600 cover the requirements of most kitchens comfortably. Across that range the meaningful differences are cartridge quality, the durability of the finish and how the lever feels to operate, with nothing much between them on water delivery. A tap at the top of that band is not delivering better water. It is delivering a mechanism that will still feel the same in ten years.

The cartridge is what fails on a cheap tap and it fails predictably. A quality ceramic disc cartridge operates smoothly for many years, while a poor one develops a drip or a gritty action within a few and replacing it means either sourcing a proprietary part or replacing the whole tap. That is the entire argument for spending more upfront. Check at purchase whether replacement cartridges are still made for the model.

Pull out spray mixers at $300 to $800 earn their premium in most households. Filling a stockpot on the bench, rinsing the far corner of a wide bowl and cleaning the sink itself all become straightforward with a hose, and the convenience compounds daily. The retracting weight system is the part that wears. A good one retracts cleanly for years and a cheap one starts sagging into the cupboard.

Spout height and reach have to be checked against your actual sink. A tall gooseneck over a shallow bowl splashes water across the bench every time it runs, and a short spout over a wide double bowl will not reach the far side at all. The showroom display is rarely paired with the sink you are buying. The measurements are published, and comparing them yourself takes a minute.

A window behind the sink limits how tall the tap can be. Many kitchen mixers need clearance above the spout for the lever to lift fully, and a tap that fouls the window sash or the sill when opened is a common and easily avoided mistake. Side lever models solve this neatly. Splashback interactions around windows are covered at kitchen splashback costs.

Finishes beyond chrome cost more and mark in their own particular ways. Matte black hides water spots and shows grease, brushed nickel is forgiving of both, and living brass is intended to change appearance over time. None of them is low maintenance in the way chrome is. Pick the finish whose failure mode you can live with, which is seldom the one that photographs best.

Filtered and Boiling Taps

Filtered and boiling water taps at $1,200 to $2,500 installed are the largest single upgrade available in this category. The convenience is real for households that make tea and coffee constantly or cook with boiling water regularly, and largely wasted on households that boil a kettle twice a day. Be honest about which one you are. The running costs continue long after the novelty has worn off.

These systems need a dedicated power point in the cupboard under the sink. That is electrical work, not plumbing, and adding an outlet inside a finished cabinet after the kitchen is complete is far more disruptive and expensive than including it at rough in stage. Decide before the electrician's first visit if you possibly can. Rough in scope and pricing is covered at kitchen electrical costs.

The under sink unit takes up real and often underestimated space. A boiling water tank plus a filter housing plus the waste plumbing fills a standard sink cupboard quickly, and what is left is frequently not enough for the bin that was also planned for that spot. Get the dimensions from the manufacturer and mark them out. It is a five minute exercise that prevents a genuinely annoying outcome.

Filter cartridges are an ongoing cost that rarely features in the purchase decision. Replacement intervals and cartridge prices vary considerably between brands, and a system with cheap hardware and expensive proprietary cartridges can cost more over five years than a dearer one with standard filters. Ask what a cartridge costs and how often it needs changing. Multiplying that out over five years frequently reverses which system looks cheaper.

Filtered only systems cost dramatically less than boiling ones and deliver most of the benefit for many households. If better tasting drinking water is the actual goal and instant boiling is not, a simple under sink filter with a dedicated small tap achieves it for a fraction of the price and takes far less cupboard space. The boiling function is the expensive part. Separate the two goals before you shop.

Retrofitting either system later is possible but consistently more expensive. The tap hole has to be created in a finished benchtop, the power has to be run into a completed cabinet and the under sink space has to be found somewhere in an already full cupboard. None of that is impossible and all of it costs more than doing it during the build. Deciding these things at specification stage is part of kitchen appliance costs.

Installation and Plumbing

Connecting water supply and waste is licensed plumbing work in New South Wales. This is not a formality, since an unlicensed installation can affect an insurance claim if a connection fails and floods a cabinet or the unit below, quite apart from the compliance question. Ask for the licence number and check it. Licensing requirements and how to check them are administered by fairtrading.nsw.gov.au.

On most installations the tap holes go into the benchtop, not the sink. The number, diameter and spacing of those holes has to be decided before fabrication, which is another reason the tap gets chosen alongside the sink and not at the end. A single mixer, a mixer plus a filtered tap and a mixer plus a soap dispenser are three different fabrication briefs. The fabricator needs that final combination in writing.

Adding a hole afterwards is possible in some materials and impossible in others. Stone can often be core drilled in place by a competent fabricator, laminate is straightforward, and any toughened glass or certain solid surfaces cannot be modified at all once finished. That makes the tap layout more permanent than it appears at the time. Assume it is final and you will not be caught out.

Existing plumbing rarely sits exactly where a new sink wants it. Moving supply and waste even a short distance is routine work, but it is still work involving opening the cupboard, cutting into existing pipework and testing the result, and it appears in the quote as labour. In older homes it can uncover pipe that needs replacing outright. In an older property that possibility deserves a contingency.

The dishwasher connection usually shares the sink waste and needs to be positioned sensibly. The connection point has to exist, be accessible and sit where the dishwasher hose can reach it without kinking behind the cabinet, which sounds obvious and is missed regularly. Confirm it explicitly on the plan. Flat pack installations where this is often self managed are covered at flat pack kitchen costs.

WaterMark certification applies to plumbing products supplied and installed in Australia. A licensed plumber should be installing certified products, and the certification is worth verifying on anything purchased online or imported directly, where compliance is far less reliable than in a local showroom. The technical framework sits with abcb.gov.au. A plumber who declines to install an uncertified tap is protecting you, however inconvenient it feels.

Waste and Accessories

Waste fittings at $50 to $300 are the item most frequently missing from a quote. The basket waste, the plug and the trap are all necessary for the sink to function, and whether they come with the sink, with the plumber or not at all varies without any consistent industry convention. This is the single most common source of a surprise line on a final invoice. That question needs asking explicitly, with the answer in writing.

Basket waste quality varies far more than the modest price range suggests. A good basket seals reliably, lifts out cleanly and holds water overnight without dropping, while a cheap one sticks in the housing, leaks slowly enough that you blame something else and irritates every single day. It is a small part with a disproportionate effect on how the sink feels. Upgrade it if the supplied one feels flimsy.

Overflow provision differs between sink models and the fitting has to match. Some sinks have an overflow channel and some do not, and a waste fitting bought generically may not suit the sink it is going into, which is a problem that surfaces at installation, long after purchase. The plumber needs the sink model number. Supplying it in advance avoids a second trip to the supplier.

Cutting boards, racks and colanders sized to the bowl add real utility and are not merely accessories. They cost $50 to $200 and effectively convert the sink into preparation space when it is not in use, which in a kitchen short on bench is worth considerably more than the outlay. They have to be bought for the specific sink to fit properly. Ordering them alongside the sink avoids a sizing problem later.

Soap dispensers mounted through the benchtop need their own drilled hole. That is another fabrication decision belonging to the same conversation as the tap holes, and adding one later has the same material limitations as adding a tap hole. Most people who want one decide late. Deciding early costs nothing extra at fabrication stage.

Waste disposal units are less common in Australia than overseas and carry their own requirements. A unit needs power under the sink, physical space beneath the bowl, a compatible waste outlet and in some council areas there are restrictions worth checking. None of that is difficult if planned. All of it is awkward if raised after the cabinet is built, and design coordination is covered at kitchen designer costs.

Replacing Without Renovating

Replacing the tap alone is among the cheapest meaningful kitchen updates available. The work takes a plumber under an hour in most cases, the disruption is negligible and a good tap changes how the sink feels to use every single day in a way that is disproportionate to the spend. For a kitchen that is otherwise sound it is the obvious first move. It also tells you whether the sink itself actually bothers you.

Replacing a sink without changing the benchtop is more constrained but frequently possible. The new sink has to work with the existing cutout, which in practice means matching the outside dimensions closely or accepting a model designed to cover a slightly larger opening. Manufacturers publish cutout dimensions as well as bowl sizes. Those are the numbers to compare, since the marketing dimensions describe the bowl.

Going larger is achievable where the cabinet allows it. A cutout can be enlarged in most benchtop materials by a fabricator working in place, and provided the cabinet beneath is wide enough the result is clean. This is fabrication work, priced accordingly, and no longer a simple plumbing swap. A fabricator should look at it before anyone assumes it is straightforward.

Going smaller is generally not an option at all. A cutout cannot be reduced, so a smaller sink leaves an exposed gap that no amount of sealant or trim will make look deliberate, and the only real fix is a new benchtop. This rules out a surprising number of otherwise appealing replacements. Measuring the existing opening first saves falling for a model that cannot fit.

Switching from top mount to undermount almost always requires a new benchtop. The existing cutout was finished on the assumption that a rim would cover it, and that edge is neither machined nor sealed to sit exposed beneath a benchtop as an undermount installation demands. Occasionally a fabricator can rework a stone top. More often the answer is that the benchtop has to be replaced, as set out at budget kitchen renovation costs.

Doing the tap and the sink together refreshes the part of the kitchen people actually touch. It costs a small fraction of a renovation, takes a day instead of weeks, and improves the surfaces a household touches dozens of times daily. For a kitchen with sound cabinetry it is excellent value. It also defers the bigger decision without foreclosing it.

Sydney Metro Costs

Expect to pay more for the same installation in Sydney than anywhere else in the state, almost entirely because plumber call out rates and the cost of running a trade business across the metropolitan area are higher. Product prices are broadly national since sinks and taps are manufactured goods sold through national distribution, so almost all the geographic variation sits in labour. Apartment work adds building access requirements that a suburban house never presents. Strata notice periods and restricted work hours both push a straightforward swap into a longer booking than the job itself warrants.

Unit blocks impose conditions a freestanding house never will. Shutting off water may affect other units and require building notice, work hours are often restricted by strata rules, and some buildings require certificates of currency from every trade before granting access. None of this is unusual and all of it takes time. Tell the plumber it is an apartment when you first make contact.

Older Sydney housing frequently hides plumbing that turns a simple job into a longer one. Terraces, semis and pre war homes can have pipework that is undersized, corroded or configured in ways nobody would choose today, and none of that is visible until the cupboard is opened and the old sink comes out. A good plumber will flag that possibility upfront and decline to promise a fixed price sight unseen. Older properties warrant a contingency for exactly this.

The city showroom advantage exists to be used. Handling a tap, working the lever and feeling the cartridge action tells you more in ten seconds than any amount of online specification reading, and cartridge feel is close to impossible to judge from a photograph. Sink gauge is similarly a hands on assessment. An hour in two showrooms usually changes what people buy.

Regional NSW Costs

Regional labour rates generally run below Sydney, though call out distances can offset the saving on a short job. A tap swap that takes forty minutes plus an hour of driving each way is priced to cover the travel, which is why a small job in a country town can cost the same as a larger one in a city suburb. Ask how travel is charged before booking. It is a normal question and plumbers expect it.

The real regional constraint is product availability, not price. A specific sink or tap frequently has to be ordered in, and that lead time matters enormously when the sink is holding up a benchtop template. Order well ahead of the measure date. A fortnight of margin removes most of the risk.

Water quality varies considerably across regional New South Wales and it affects the decision. Hard water leaves visible deposits on dark composite sinks and on matte tap finishes, and it shortens the life of cartridges and aerators in some districts noticeably. That makes a filter more worthwhile and a forgiving finish more sensible. A local plumber will know what the water does to tapware in that area.

Tank water changes the filtration conversation entirely. A household on rainwater has different treatment requirements from one on town supply, and the right system depends on what is actually in the water. Raise it with the plumber early. Lighting and other trades that share the same rough in visit are covered at kitchen lighting costs.

Coordinating with other plumbing work makes obvious sense outside the metropolitan area. Where a plumber is already attending for a bathroom, a hot water service or a leak, adding the kitchen sink to that visit avoids a second call out charge and a second block of travel entirely. Keeping a list of small jobs and calling once beats calling for each one. It is the simplest saving available regionally.

What to Look Out For

Choose the sink at the same time as the cabinets, well before the kitchen is nearly finished. Bowl width sets the minimum cabinet it can sit in, bowl depth eats the storage beneath it, and heavy fireclay or composite sinks need the cabinet built to carry the load. Farmhouse and apron front sinks need a purpose built cabinet entirely since the front is on show instead of sitting behind a door. By the time cabinets are built, the sink choice has effectively been made whether you made it deliberately or not.

Undermount sinks have to be bought before the benchtop is templated. The fabricator machines the cutout to that specific bowl, so the sink must be physically in hand at measuring stage. A benchtop already fabricated for one sink cannot accept a different one, which means a late change of mind costs a new benchtop, not just a new sink. Undermount also needs a benchtop material that supports it, so stone and solid surface work while standard laminate generally does not.

Decide the tap before the benchtop is cut as well. Tap holes are drilled during fabrication on most installations, and the number and spacing has to be final at that point. Adding a hole later is possible in some materials and impossible in others, so the layout is more permanent than it looks. Check spout height and reach against your actual sink too, since a tall gooseneck over a shallow bowl splashes and a tap under a window can foul the glass when the handle lifts.

Budget more for the tap than instinct suggests. The cartridge is what fails on a cheap tap, usually starting to drip within a few years, while a mid range stainless sink will outlast the kitchen around it. Most people spend the opposite way, putting money into the sink and economising on the tap. A pull out spray mixer at $300 to $800 earns its premium for most households, since filling pots and rinsing the bowl both become considerably easier.

Confirm what the quote actually includes at the waste end. Basket wastes, plugs and traps run $50 to $300 and are the item most commonly left out of a sink price, and overflow provision differs between sinks so the fitting has to match the specific sink. If you are considering a boiling water tap, it needs a power point under the sink, which is electrical work best included at rough in stage and awkward to add inside a finished cabinet later. Consumer guarantees that apply to both products and installation are explained at accc.gov.au, and disputes that cannot be resolved directly are heard by ncat.nsw.gov.au.