Short answer: in the published cost data, no. No authoritative source distinguishes the two. The Archicentre Australia Cost Guide 2026 carries a single "Kitchen" line item, $23,000 to $49,000 GST inclusive, and its text implies the same figure applies to a kitchen built inside an extension.
On site the difference is real, and it is the difference between working on existing services in an existing room and creating a kitchen where there was never one.
What the cost guides do and do not separate
We checked every source we would be willing to publish. Archicentre gives one kitchen figure. Finder splits kitchens by budget tier and by size, not by whether the room exists. Canstar collects marketplace ranges for "kitchen renovation" and does not define the term. Houzz Australia reports a median kitchen spend from a survey of its own users and does not ask the question either.
So if you are searching "new kitchen cost" and "kitchen renovation cost" expecting two different published answers, there is only one. Anyone showing you two distinct figures has made them up.
How a builder tells them apart
The distinction that matters is not the language. It is what the room already has.
A kitchen renovation replaces joinery, benchtops, splashback and appliances in a room that is already a kitchen, using the water supply, waste and appliance circuits that are already there. Sometimes a point moves a metre. The building itself is untouched.
A new kitchen, in the sense that changes the job, means putting a kitchen where there was not one — a kitchen in an extension, a second kitchen downstairs, a kitchenette in a converted garage, a kitchen relocated to the other side of the house so it opens onto the yard. That brings:
- A new water supply run to a point that has never had one
- A new waste run, which needs fall, venting and a connection to an existing stack or sewer point
- New circuits from the switchboard, and often a switchboard upgrade
- Frequently, structural work — an opening in a load-bearing wall, a beam, new floor framing
- Sometimes an approval pathway that a fit-out would never trigger
People use both phrases loosely, and that is fine. But when a builder asks whether the sink has ever been there, that is the question being asked.
Where the published figures do separate: per square metre
Archicentre does not band kitchens, but it does band buildings. Renovation inside the existing building envelope runs $1,600 to $3,900 per m². New construction, which the guide says includes extensions, runs $2,700 to $5,100 per m².
That is the honest place to look for the difference. If your new kitchen is inside a new extension, the room it sits in is priced at the new-construction rate before a single cabinet is ordered, and the kitchen line item sits on top of that. If you are re-fitting an existing kitchen, you are in the envelope rate, and mostly you are not paying it at all because you are not rebuilding the room.
Both rates exclude services upgrades, repairs to the existing house, structural upgrades and professional fees, and both assume sound condition and good access.
Why it changes the quote
A fit-out quote is dominated by joinery, benchtop and appliances, with a plumber and an electrician attending for rough-in and fit-off. A new kitchen adds whole trades and whole scopes: excavation or slab cutting for waste, framing, possibly a structural beam and its engineering, plasterboard, flooring, and a switchboard that may need to be brought up to current requirements.
It also adds risk. A new waste run has to fall correctly to a connection point that already exists somewhere in the property, and where that point sits is not always obvious until work starts. That is the single most common reason a "new kitchen" quote carries a provisional sum where a renovation quote would carry a fixed price.
Why it changes the timeline
The published durations are all for renovations. Finder put a kitchen at four to eight weeks and a small kitchen at roughly two weeks in February 2023; Canstar said four to six weeks in May 2023. No one publishes a duration for building a kitchen into a new space, because that timeline belongs to the extension or conversion, not to the kitchen.
Practically, the joinery is one of the last things to happen. Structure, services rough-in, lining and flooring all come first, and the joinery cannot be measured for final fabrication until the walls are in their final position.
Why it can change the approval pathway
The HIA states that kitchen and bathroom renovations can be exempt development in NSW under the Codes SEPP — covering cabinetry and fixtures — provided there are no structural changes, and that no dollar threshold applies. A like-for-like kitchen refit usually sits comfortably inside that.
Once you are taking out a load-bearing wall or building an extension, structural change is exactly what you are doing, and the exemption no longer describes your job. In strata, the split is similar in shape: installing or removing cupboards and changes to internal walls are minor renovations needing an ordinary resolution of more than 50% of votes, while structural changes and waterproofing work are major renovations needing a special resolution, which passes when no more than 25% of the value of the votes cast is against.
Both jobs cross the NSW contract thresholds in the same way. Over $5,000 including GST, a written contract and a licensed contractor are required. Over $20,000 including GST, Home Building Compensation insurance must be in place before work starts or a deposit is taken.
Common questions
Is a new kitchen more expensive than a kitchen renovation?
No published source says so, because no published source separates them. In practice yes, when "new" means new services runs and structural work, because you are paying for the room as well as the kitchen.
Which term should I use when I ask for a quote?
Neither, on its own. Say whether the sink and appliances stay where they are, and whether any wall is coming out. Those two answers price the job.
Does replacing every part of a kitchen count as a new kitchen?
Commercially it will be quoted as a renovation if it is in the same room on the same services, however complete the strip-out is. The cost guides treat it that way too.
What if the kitchen is going into an extension?
Then you have two costs, not one. The extension is priced at the new-construction rate of $2,700 to $5,100 per square metre, and the kitchen fit-out sits on top of it.
Is a kitchenette treated differently?
Not in any published cost guide. On site it is priced the same way as any new kitchen — by whether it needs a new waste and new circuits, not by how many cabinets it has.
Sources
- Archicentre Australia, Cost Guide 2026 (5 February 2026)
- Finder, Kitchen renovations (updated 23 February 2023)
- Canstar, Kitchen renovation cost (24 May 2023)
- Houzz Australia, 2023 Houzz & Home Renovation Trends Study (fielded December 2022 to March 2023)
- HIA, Are bathroom and kitchen renovations exempt development? (21 January 2026)
- NSW Government, Strata renovations (17 March 2026)
- NSW Government, Guide to providing home building contracts (11 June 2026)
- State Insurance Regulatory Authority NSW, Home building compensation (2026)
Renova Build holds NSW contractor licence 397801C. Our showroom is at 104 George Street, Hornsby. This article is general information, not advice on your specific project.
Kitchen renovations across Sydney's North Shore · Home renovations and extensions · Talk to us about your kitchen
