Quick answer
A benchtop can be quoted off plans and fitted onto cabinetry anybody built, and it is a normal job rather than a favour. What the supplier needs is a dimensioned setout, the material and edge, and the cut-out details — sink model, tap holes, cooktop, and whether the sink is dropped in or undermounted. What they cannot do is cut to the drawing. The top is templated on site once the cabinets are fixed and level, because a top is cut to the room, not to the plan.
Key points
- Supply-only and supply-and-install onto someone else's cabinets are both routine. Say which you want up front.
- To quote: linear metres, depth, material and finish, edge profile, joins, and every cut-out.
- To fit: cabinets fixed, level and square first, then a site template. Nobody good cuts stone or laminate off a drawing.
- The cut-out is where the risk sits. Give the supplier the actual sink and tap model, not a description.
- For a tender, a marked-up plan plus a schedule of cut-outs gets you a firm price. A photo and a rough length gets you a range.
Plenty of benchtop work has nothing to do with a new kitchen. A landlord replacing a swollen top in a Māngere unit. A builder whose cabinetry came from one supplier and who needs a top before the plumber can connect. A property manager going out to tender across forty units where the carcasses are sound and only the tops have gone. In all three the cabinets exist and somebody else made them.
This is ordinary work and it is priced the same way as any other benchtop. The only thing that changes is that the supplier did not build what the top is landing on, so a couple of checks that would otherwise be internal now have to be asked out loud.
What a supplier needs to give you a real price
A benchtop price is mostly linear metres of a given material, plus the work in the ends and the holes. So the quote gets accurate as soon as you can say how long, how deep, what it is made of, how the corners are handled and what is being cut out of it.
| What | Why it moves the number |
|---|---|
| Linear metres and depth | The base of the price. Standard depth is 600mm; anything over that may change the sheet or slab you can use |
| Material and decor | Laminate, engineered stone and solid surface are different jobs with different fabrication, not just different prices per metre |
| Edge profile | A square edge, a postformed roll and a built-up edge are three different amounts of fabrication |
| Joins and corners | Where a join has to land is a fabrication decision and a durability one — it is the first place a top fails |
| Cut-outs | Sink, tap holes, cooktop, waste. Each one is labour and each one is a place the top can be lost |
| Access and floor | A top going up to a first-floor apartment is a different install from one wheeled through a garage |
Why nobody cuts to the drawing
A plan says the wall is 3000mm. The wall is 3008mm at the back and 2994mm at the front, because it is a real wall in a real Auckland house and the gib stopper had a Friday. Cabinets get scribed to that. A benchtop cut to 3000mm in a factory will either bind or leave a gap, and on a stone top there is no adjusting it afterwards.
So the sequence is fixed and it is not negotiable: cabinets in, fixed, levelled and packed; then a template taken on site; then fabrication; then install. That gap between template and install is the part people forget when they build a programme, and it is the most common reason a kitchen sits without a top while a plumber waits.
The practical consequence for a supply-only job is that somebody has to tell the benchtop supplier when the cabinets are actually ready — not when they are scheduled to be ready. A template taken against cabinets that are still sitting loose is a wasted visit and, worse, a top cut to the wrong line.
Who carries what, when the cabinets aren't yours
On a job where one company does the cabinets and the top, a level problem is an internal conversation. Split across two, it becomes a question of whose fault it is, and the honest answer is usually nobody's — it is a house. What matters is agreeing the check before it becomes an argument.
- The cabinets are level and square before templating. The benchtop supplier will check, but the cabinet installer owns fixing it.
- A run that is out of level gets packed by whoever installed the cabinets, not shimmed under the top.
- Cut-out positions come from the person supplying the sink and the cooktop, in writing, before fabrication.
- Damage to a finished top during other trades' work is not a fabrication defect. Get the top in late in the programme where you can.
- Old top removal and disposal is a separate line. Say whether you want it, because a replacement quote that assumes it and one that doesn't look like a price difference when they aren't.
If you are putting it out to tender
Tenders for benchtop-only work come in two shapes. One is a marked-up plan with dimensions, a material, an edge and a schedule of cut-outs — that gets you firm prices you can actually compare, because everyone is pricing the same job. The other is a couple of photos and an approximate length, which gets you ranges and a set of assumptions that differ between bidders, and then the cheapest number is usually the one that assumed the least.
If you are pricing across multiple units, the single most valuable thing you can do is establish how many distinct tops there really are. Forty units is rarely forty benchtops; it is usually three or four types repeated. Say that in the tender and the price per unit drops, because the fabrication setup is being paid for a handful of times instead of forty.
Frequently asked questions
Will you fit a benchtop onto cabinets you didn't build?
Yes, routinely. We quote benchtop supply and install across Auckland onto cabinetry someone else has installed, and template on site once those cabinets are fixed. The only conditions are practical ones: the cabinets need to be level, square and fixed before we template, and the sink and tap need to be confirmed before fabrication.
Can you price a benchtop off plans?
For quoting, yes — linear metres, material, edge and cut-outs off a dimensioned plan will get you a price you can rely on. For cutting, no. The top is templated on site after the cabinets are in, because the room is never quite the drawing. The plan gets you the number; the template gets you the fit.
How long between templating and installing?
It depends on the material and the fabrication, and any supplier who gives you a number without knowing which top you have chosen is guessing. What matters more for your programme is that the gap exists at all — build it in, and do not book the plumber for the same week as the template.
Do you take the old benchtop away?
If you ask for it, and it is a separate line so you can see it. Removal is not free and quotes that quietly include or exclude it are the main reason two benchtop replacement prices look further apart than they are.
Who does the plumbing when the top goes on?
A plumber. We supply and install the sink itself, and we leave the cut-out and the top ready for connection — but tapware, waste and the connection are plumbing work and we don't do it. On a replacement, someone needs to disconnect before we lift the old top and reconnect after the new one is in, and that visit is worth booking at the same time you book us.
The short version
Send dimensions, material, edge and cut-outs and you will get a price rather than a range. Expect a site template after the cabinets are fixed, whoever built them. And put the plumber's two visits in the programme early, because on a benchtop-only job the top is rarely the thing that holds it up.