Quick answer
Replacing a kitchen in the same layout is the cheapest good renovation there is. Keep the sink within reach of the existing waste and the cooker on its circuit, and you avoid re-piping, re-wiring and consent questions. A standard straight or galley swap lands around $8-12k installed in Auckland, an L-shape $12-18k, plus GST.
Key points
- Same footprint, new kitchen: the sink stays within reach of its waste, the cooker stays on its circuit, and the plumber's bill is measured in hours, not days.
- Like-for-like replacement keeps you clear of the consent questions that moving services triggers.
- You can still change nearly everything you actually see and touch: door fronts, benchtop, drawers instead of shelves, splashback, handles.
- Budget roughly $8-12k installed for a standard straight or galley swap and $12-18k for an L-shape, plus GST, with small galleys under that.
- Moving the sink is worth it only when the layout is genuinely broken. When you do move it, expect the services work, the programme and the patching to grow together.
There is a version of a kitchen renovation where the plumber comes for a couple of hours to disconnect, comes back for most of a day to reconnect, and that is the entire wet-trades story. No floor cut open, no new waste run, no drainage drawing. The kitchen that makes this possible is the one that goes back where the old one stood: sink at the sink, cooker at the cooker, fridge where the fridge always was.
It sounds unambitious. It is actually the sharpest money most Auckland homeowners will ever spend on their house, because everything you hated about the old kitchen was almost never the layout. It was the swollen doors, the shelves where drawers should be, the benchtop with the burn, the hinges that gave up in 2019. All of that changes in a same-layout swap. What stays is the expensive invisible stuff: pipes, circuits and the arrangement of walls.
What staying put actually saves
The savings stack in layers, and only the first one is obvious. The direct saving is trades: no plumber re-running waste and water under the floor, no electrician pulling new circuits through closed walls, no patching and painting where services used to be. The quieter saving is the consent question that never gets asked, because swapping joinery like-for-like sits in maintenance territory, while relocating a sink starts a conversation about drainage that moving a kitchen sink and consent in NZ walks through properly.
Then there is the programme. A same-spot swap is a strip-out, an install and two service visits, which is why it fits inside a week on site. Add a services move and you add floor access, waiting, inspection points and repair work, and a one-week job becomes three. Time is money you notice at dinner: every extra week is another week of takeaways and washing dishes in the laundry tub.
Same-spot swap against a moved sink: what each one triggers.
The one-day-of-plumber reality
Here is the shape of the week. The plumber disconnects the sink, taps and dishwasher on the morning of strip-out, and the electrician isolates the stove connection. The old kitchen comes out, the walls get checked, and the new carcasses go in over the next day or two, built to a site measure taken weeks earlier. Benchtop goes on, splashback goes up. Then the plumber returns for the reconnect: sink into the same waste, taps to the same water, dishwasher beside the sink where dishwashers belong, while the sparkie reconnects the stove to its existing circuit. Two service visits, book-ending the joinery.
That sequence is why the same-layout swap is the renovation that behaves. Each trade arrives once with a clear job, nothing waits on an inspection, and the thing that governs the timeline is joinery lead time rather than trades coordination. The full sequence, including what happens before the week on site, is laid out in the kitchen renovation timeline, week by week.
What you can still change freely
Keeping the sink and cooker where they are constrains almost nothing you look at. Fronts are yours to choose: the door style, colour and handles that date a kitchen hardest are all new regardless. The benchtop is new, so the material conversation happens anyway. Inside the run you can reorganise completely: a bank of deep drawers where the pot cupboard was, a proper bin pull-out, a dishwasher where a 600 mm cupboard sat, cutlery inserts, soft-close everything. Uppers can grow to the full 720 mm module, the splashback can become glass or tile, and lighting under the uppers is an easy add while the sparkie is there for the stove.
Honesty requires the reverse case too. If the carcasses are sound and it is only the doors and benchtop that are tired, you may not need a new kitchen at all; new fronts on old boxes is a real option with real limits, and replacing kitchen doors versus full replacement sets out where each one wins. The same-layout swap earns its keep when the boxes themselves are swollen, water-damaged or built for a household that owned four plates.
How much does it cost to replace a kitchen in the same layout?
For a same-footprint swap in Auckland, the honest bands run off kitchen shape. A small galley sits around $6.5-9.5k installed, a standard straight or galley around $8-12k, and an L-shape around $12-18k, all plus GST. Supply-only, if your builder is fitting it, knocks those back to roughly $4.5-7k, $5.5-8.5k and $8.5-13k respectively. Where you land inside a band is fronts, benchtop and hardware, the same levers as any kitchen.
| Kitchen shape | Supply-only | Supplied and installed |
|---|---|---|
| Small galley | $4.5-7k | $6.5-9.5k |
| Standard straight or galley | $5.5-8.5k | $8-12k |
| L-shape | $8.5-13k | $12-18k |
Notice what is missing from those numbers: the services premium. That is the point. In a moved-layout job the plumber, electrician, patching and consent time can add thousands before a single cabinet improves, spend that buys you nothing you can see. In a same-spot swap, close to the whole budget lands on joinery, benchtop and finishes, which is where the money in a kitchen quote should be going in the first place.
When moving the sink is worth it
Some layouts are genuinely broken, and no amount of new joinery fixes a sink in a dark corner facing a wall while the family lives behind your back. The cases that justify a move are consistent: opening the kitchen to the living space, a sink relocating to an island or a window that deserves it, a layout where the fridge, sink and cooker force you across a doorway, or a footprint changing because a wall is coming out anyway. When the renovation is already structural, the marginal cost of moving services drops, and doing it properly once beats living with a compromise for twenty years.
Go in with eyes open about what the move triggers: waste and water re-piped and gradients checked, possibly floor access from below or a channel cut in a slab, the drainage consent conversation, an electrician if the cooker wall changes, and patching where the old services ran. None of that is a reason not to do it. All of it is a reason to decide deliberately, price both versions, and make the layout earn the difference.
What the old kitchen might be hiding
One caution before you lock a budget: the strip-out is when the house gets to comment. The floor under an old sink base has often seen a slow leak, walls that look flat carry forty years of settlement, and the vinyl may stop dead at the old kick line. A same-layout swap keeps these surprises small because nothing structural opens up, but small is not zero, and a fair contingency beats a mid-job negotiation. What tends to turn up and how installers price it honestly is covered in what an existing home hides from a new kitchen.
The 48 hours before you ask for pricing
Getting a sharp number for a same-layout swap takes one evening and a tape measure. Measure each run wall to wall at bench height. Photograph the kitchen from both ends, then open the sink cupboard and photograph where the waste and water enter. Note which wall the stove sits on. Decide the one honest question: is the layout the problem, or just the kitchen? If the layout works, say so in the request, because sink stays put is the single most useful sentence a quote can contain.
Send that to MTN Kitchens and pricing comes back within 24 hours with a reference number, supply-only or supplied and installed, and a site measure locks the dimensions before anything is cut. The kitchens that come out of this path are the quiet success stories: nobody moved a wall, nobody met a drainage inspector, and the household went from the 1987 kitchen to a new one in about a week.
Frequently asked questions
How much does it cost to replace a kitchen in the same layout?
In Auckland, roughly $6.5-9.5k installed for a small galley, $8-12k for a standard straight or galley, and $12-18k for an L-shape, all plus GST. Supply-only runs about $4.5-7k, $5.5-8.5k and $8.5-13k for the same shapes. Fronts, benchtop and hardware move you inside each band; keeping the sink and cooker where they are is what keeps you out of the next band up.
Do I need a building consent to replace a kitchen in NZ?
Replacing joinery like-for-like in the same positions generally sits in maintenance territory, which is a large part of why same-layout swaps are cheap. Moving the sink brings drainage into play and starts a consent conversation that depends on what is changing and your council. If the sink, walls and services all stay put, the question usually never arises; if anything moves, ask before you commit.
Can I keep my existing plumbing with a new kitchen?
Yes, and it is the single best cost decision available. Design the new run so the sink lands within reach of the existing waste and the taps reuse the existing water feeds. The plumber then disconnects at strip-out and reconnects at the end, hours of work rather than days, with no floor opened and no gradient to re-engineer.
How long does a same-layout kitchen replacement take?
About a week on site is the usual shape: strip-out and disconnection, one to two days of carcass installation, benchtop and splashback, then reconnection of sink, dishwasher and stove. The longer clock is manufacture: the joinery is built to a site measure taken beforehand, so the overall project runs some weeks from measure to finished kitchen even though your house is only disrupted for days.
What can I change in a kitchen without moving the plumbing?
Nearly everything visible: door fronts and colours, handles, benchtop material, splashback, drawer banks instead of shelf cupboards, a dishwasher beside the sink, bin pull-outs, cutlery inserts, full-height uppers and under-cabinet lighting. The constraint is only that the sink stays within reach of its waste and the cooker stays on its circuit; the rest of the run is open to redesign.
Is it cheaper to just replace the kitchen doors?
If the carcasses are sound, yes, and it is worth saying plainly: do not buy a new kitchen to fix tired doors. New fronts, handles and a benchtop on solid boxes is a legitimate renovation at a fraction of the cost. The full replacement earns its money when the boxes are swollen, water-damaged or laid out for a different decade of living.
When is it worth moving the kitchen sink?
When the layout itself is broken: a sink facing a dark corner, a work triangle crossing a doorway, or a renovation already opening walls and floors, which drops the marginal cost of the move. Moving it triggers re-piped waste and water, a drainage consent conversation, patching and a longer programme, so price the same-spot version alongside it and make the new layout earn the difference.