By 
Outdoor kitchens are one of the fastest-growing home upgrades in Australia, and more homeowners are turning gardens into year-round entertaining spaces. What most of the guides you will find are not, however, is Australian. One of the most-repeated lines online is that most outdoor kitchens do not require planning permission in the UK which is true, and useless, because “planning permission” is not an Australian term and our rules are set state by state. The same guides quote clearances in inches and a build cost that would not get you a benchtop here.
So here is outdoor kitchen design in Australian numbers, starting with the one that decides everything: how long your run of bench is. Explore the galleries afterwards; the dimensions come first.
Start with the run
An Australian outdoor kitchen bench sits at 890–905mm high, the same as indoors. The depth is where it differs: 600mm minimum, and 685–700mm typical for modules built to take a BBQ, against the 600mm indoor standard. That extra 85–100mm is the single most common reason a set of indoor-style cabinets does not work outside.
A built-in BBQ needs a cut-out of roughly 720mm for a three-burner and 828–880mm for a four-burner, plus 450–600mm clearance to combustibles depending on brand and a 20–30mm rear ventilation gap. So a BBQ module is realistically 900mm of your wall.
Now the arithmetic:
| Run length | What fits |
|---|---|
| 1.8m | BBQ + a bench. No sink, the smallest Australian sink module is 830mm, which would leave 70mm of prep. |
| 2.4m | BBQ + sink + 670mm of prep, or BBQ + 900mm of prep + a drawer unit. Not both. |
| 3.0m | BBQ + sink + real prep, with about 370mm left for a bin pull-out or an under-bench fridge. |
That 2.4m line is the honest decision point. You are choosing between washing up outside and having bench space you actually want to cook on. Australian modular suppliers make the same call, the smallest pre-designed package that includes a sink is 2,200mm, and below that the systems drop the sink entirely.
Which is the real answer to the advice that designing a compact open-air culinary setup requires maximising every square inch. It does, but in a country that works in millimetres, and the inches are a clue that the guide you are reading was written for somewhere else.
On circulation: you will read that you should allow at least 36 inches of clear space in front of outdoor kitchen areas. That is 914mm, and it is the American NKBA walkway minimum, their own figure for a work aisle is 1,067mm, so the advice has imported the least generous number and applied it to the most demanding situation. Australian practice, from three independent sources, is 1,200mm ideal, 1,000mm workable, and never below 900mm.
Layouts
A single-wall layout is the most space-efficient for small outdoor kitchens, and it is what RACV’s head of trades recommends for most settings simple, needs the least room, and works on a narrow deck or one wall of an alfresco area.
An L-shaped layout separates cooking from social areas while maximising space, which is what a courtyard corner wants: BBQ or grill plate on one leg, sink and fridge on the other. It is the layout that will suit a family space best, because whoever is cooking is not standing in the walkway. Corner layouts maximise space in compact outdoor kitchens, and Australian suppliers sell a dedicated 750 × 750mm corner module for about $999, which is the answer to the dead corner an L-shape otherwise creates.
A galley needs 1,200mm between two runs, so with 700mm-deep modules you need about 2,600mm of courtyard width before it works. An island wants 1,200mm clear on every side you use it from roughly 3.5m of width, so rule it out on most small sites.
Compact outdoor kitchens can fit on balconies and courtyards, which makes an outdoor kitchen a realistic project for a townhouse or apartment lifestyle rather than only a large backyard. Three Australian caveats on a balcony, though: the gas standard’s balcony test (below), your strata by-laws, and anything fixed through a balcony slab risking the waterproof membrane. The realistic balcony version is a straight run of freestanding or castored modules, a two or three-burner BBQ, a bar fridge and no plumbing.
Dedicated cooking, prep, cleaning, and dining areas improve workflow in small outdoor kitchens, and a typical outdoor kitchen layout includes cooking, prep, dining, and storage zones. At small scale, Australian builders talk about three: prep, cook, serve.
The sink, and where the water goes
Outdoor kitchens often include built-in BBQs and sinks, and outdoor kitchens can feature concrete benchtops and built-in sinks, but the sink is the item that turns a weekend project into a licensed trade job.
An outdoor kitchen sink is a sanitary fixture, and kitchen wastewater is excluded from every greywater reuse pathway in Australia because of the fats and detergents in it. Detergent in stormwater is a pollutant offence in its own right. Which means the waste has to go to sewer, not to the garden and not to a stormwater pit, and that is a licensed plumber’s job with a compliance certificate at the end of it.
To be clear: no Australian regulator says “an outdoor kitchen sink must connect to sewer” in one quotable sentence. It follows from the rules on kitchen greywater, stormwater pollution and sanitary fixture drainage taken together. Every Australian plumber will tell you the same thing, and it is why the sink is the expensive part of a small outdoor kitchen rather than the BBQ.
If the run is under 2.4m, the honest answer is to skip it. A cold-water tap and a bench, with the washing-up going inside, costs a fraction and gives you the prep space back.
Gas: the cupboard, and the roof
This is the section that catches people, and it has two parts.
The LPG cylinder cabinet
If you build a gas bottle into cabinetry, that compartment needs at least 200cm² of free ventilation area at high level and another 200cm² at low level, with the low vent’s upper edge no more than 125mm above the base, or a sidewall at least 25% perforated. And the BBQ cabinet itself needs a separate 400cm², vented independently of the bottle.
In a 1.8m run, that is effectively a whole cupboard given over to ventilation. It is the strongest practical argument for running natural gas to a bayonet instead, if your house has it.
The roof is the other trap
Almost nobody writes about this. Under the Australian gas standard, a roofed area only counts as “outdoors” if enough of it is permanently open:
- Roof with two walls or fewer: at least 50% of total wall area permanently open.
- Roof with more than two walls: at least 25% completely open, plus 30% of the remaining wall area.
- Balcony: at least 20% of the side, back and front wall areas.
And here is the part that bites: windows, café blinds and louvres do not count as permanent openings. They are restrictions. So the outdoor blinds you fit to make the alfresco usable in winter can legally reclassify the space as enclosed, and a compliant BBQ becomes a non-compliant one. Decide the blinds and the BBQ together, not a year apart.
One correction on safety. You will read that a flame failure system enhances safety in outdoor kitchens. True, and worth having, but a flame failure device is not mandatory on an Australian outdoor BBQ connected directly to a gas cylinder. It becomes mandatory when the appliance connects to a bayonet, and in caravans and boats. Plenty of good Australian BBQs ship without one, so check the spec rather than assuming.
Electrical, and the fridge
An outdoor GPO needs IP53 under cover and IP66 fully exposed, on an RCD-protected circuit tripping at 30mA or less. All of it is licensed electrical work.
On the fridge: an indoor bar fridge outdoors is a common and expensive mistake. Outdoor-rated units have sealed electronics, a different compressor rating and UV-stable finishes; an indoor one in an Australian alfresco fails in a couple of summers, usually in the second January when you need it.
Materials that survive Australian conditions
Outdoor kitchen cabinets should be made from waterproof materials, outdoor kitchens should have waterproof cabinets to prevent damage, and outdoor kitchens should use weather-resistant materials for durability. Outdoor kitchens are designed for all-weather use with durable materials, and outdoor kitchens benefit from weatherproof finishes for durability, all of which is correct, and here is what it means in practice in Australian conditions.
Carcases: marine-grade ply, HDPE polymer, stainless steel or powder-coated aluminium. Standard kitchen boards, even the moisture-resistant kind, swells and fails outdoors. Durable materials are essential for outdoor kitchen longevity is not marketing; it is the difference between a five-year kitchen and a twenty-year one, and choosing the right materials up front is what makes the finished thing low maintenance rather than a chore.
Stainless: 304 or 316
The grade matters more than most people realise. The Australian Stainless Steel Development Association’s rule is 316 minimum within 5km of the surf, 304 “is not recommended” there, and tea staining routinely appears within 5km and sometimes 20km inland. Surface finish matters too: below 0.5µm Ra resists staining far better. If you are anywhere near the coast, ask which grade you are being sold, because the price difference is small and the failure is ugly.
Benchtops: concrete, porcelain, natural stone, stainless and tile all work outdoors. Engineered stone has been prohibited nationally since 1 July 2024, and it is worth checking your quote, at least one Australian modular outdoor kitchen supplier still lists engineered stone benchtops on its published spec sheet.
Drawer stacks provide better accessibility compared to traditional cabinet doors in compact spaces, and outdoors that is doubly true: a drawer brings the back of the cabinet to you instead of making you crouch on wet paving. Set cabinetry on a plinth or slab rather than directly on the ground, and leave drainage behind and under the units.
Modular or custom built
Modular kitchen units are increasingly popular for outdoor kitchens, and in Australia the modular systems have got genuinely good, 750mm and 900mm modules on locking castors, corner units, sink and fridge cabinets, in stainless or polymer.
The trade-off is honest. Modular gets you a working kitchen faster and cheaper, you can move it, and the DIY component is real, the cabinets arrive assembled and you are only paying trades for the gas, water and power. Custom joinery gets you the exact run length, an integrated benchtop with no joins, and cabinetry that matches the house. On a small site modular usually wins, because a 2.4m run has no awkward geometry to solve.
Compact outdoor kitchens can utilize slimline counters and mobile units, and small outdoor kitchens can use slimline counters and mobile units, the same idea, and it is the right one for a courtyard that also has to be a courtyard. Foldaway kitchen units save space in small outdoor areas, and utilizing foldable surfaces can enhance space efficiency during outdoor meal prep: a fold-down bench extension gives you 400mm of prep when you are cooking and nothing when you are not.
Getting more out of a small footprint
Integrated storage solutions help keep benchtops clear in small outdoor kitchens, and in a run this short, clear bench is the whole point.
- Using vertical storage and multifunctional fixtures optimises compact outdoor kitchens. A rail above the splashback for tongs and a slide-out spice drawer beat another base cabinet.
- Multi-tasking appliances save space and enhance cooking capabilities in compact kitchens, and compact, multi-function appliances reduce the footprint of outdoor kitchens, a BBQ with a hotplate and a wok burner does three jobs in one cut-out.
- Using a slim appliance strategy increases usable bench space in small outdoor kitchens: an under-bench fridge instead of a freestanding one, a single-bowl sink instead of a double.
- Vertical herb gardens can enhance functionality in compact cooking spaces, a wall planter beside the prep area is the one piece of greenery that earns its place.
- Small outdoor kitchens can include built-in seating for efficiency, and a bench along the back of the run is cheaper than outdoor furniture and takes half the room.
- A built in thermometer in the BBQ hood, a bin pull-out and a bottle opener on the end panel are the add ons that get used, and they belong within easy access of where you stand. Most of the rest, the smart tech, the app-connected everything, does not survive contact with a wet weekend.
Lighting
Lighting directly over the cooking and prep areas is essential for safety during evening cooking, you are handling knives and hot metal in the dark otherwise, and a general festoon over the table does not reach the bench.
Under-counter lighting reduces shadows and expands the visual space in outdoor kitchens, and it is the cheap layer that makes the run look built rather than assembled. Both need weatherproof fittings on the RCD-protected circuit, and hardwiring is licensed electrical work.
Style, and the styles that keep working
Modern outdoor kitchens embrace minimalism with sleek units and clean lines, which is what stainless and porcelain do naturally, and it suits a small run because visual quiet makes a short bench look deliberate. Premium finishes and premium quality hardware are worth the money in exactly one place outdoors, the drawer runners because that is what fails first.
Rustic outdoor kitchens use wooden finishes and brickwork for charm, with the caveat that timber outdoors needs re-oiling and brick needs a proper slab. Mediterranean outdoor kitchens feature terracotta and patterned tiles, which travels better here than most imported looks because the climate genuinely matches.
A pizza oven is the most requested add-on and the biggest footprint decision, a built-in wood oven is a masonry project with its own clearances, and it cannot go under a roof. A freestanding gas oven on the end of the run gets you most of the way for a fraction of the space.
Approvals and cost
Separate the structure from the fitout. In New South Wales, a barbecue or other outdoor cooking structure is exempt development if it is no more than 4m², no more than 1.8m high, behind the building line, and at least 450mm from each lot boundary. The cabinets and the BBQ almost never need council approval anywhere in Australia. A roof or pergola over them usually does, and the thresholds differ sharply by state, so check with your local council before you assume, particularly in Victoria, where roofing a pergola turns it into a verandah and always needs a permit.
On cost, the figure circulating that outdoor kitchens can cost between $2,000 and $10,000, is well below Australian reality for anything built in. That range covers a freestanding trolley, not a custom built kitchen. Here it is properly:
| Type | Australian cost |
|---|---|
| Freestanding compact unit | $2,500–$8,000 |
| Modular built-in, small | $5,000–$12,000 |
| Mid-range built-in | $12,000–$25,000 |
| Premium | $25,000–$60,000+ |
The average Australian project spend is around $17,500, split roughly 30% joinery, 35% benchtops, 25% appliances and 10% installation.
Outdoor kitchens enhance outdoor living and add property value is the claim, and the honest position is that no Australian research quantifies it. The value case that does hold up is use: an outdoor kitchen that is 2.4m or longer, lit, and under something providing protection from the weather gets used most weekends by the whole family. One that is a BBQ on a slab in full western sun gets used twice a summer.
If shade is the missing piece, retractable roofs and adjustable louvres are the luxury answer and they solve a genuine problem, just remember they count as restrictions, not openings, under the gas rules. A pergola with a deciduous vine does the same job for a tenth of the price, and lets natural light through in winter.
Where to start
Measure the wall. Under 2m, plan a BBQ and a bench and wash up inside. At 2.4m, decide honestly whether you want the sink or the prep space. At 3m you can have both.
Then settle the gas before the cabinetry, bottle or bayonet, and whether anything you plan to put over the top will still count as outdoors. Get the electrician and the plumber quoting off the same drawing. Choose 316 stainless if you can see the water from your house. Then create the features you will genuinely use and leave the rest off.
And build it where you will actually stand. That is the one of the key considerations no gallery photo will tell you, and it matters more than any of the finishing touches: a dream outdoor kitchen in the wrong corner of the backyard is the most expensive storage cupboard you will ever own, while a plain one beside the back door becomes a great place your family uses every week. The perfect outdoor kitchen is the one you walk past on the way to the fridge.
Take the inspiration from wherever you like, but check every dimension against an Australian source, choose the layout that suits the space you actually have, and get the gas and the drainage designed before anyone starts building. That is the difference between spending time outdoors and looking at a photo of somebody else doing it.
