Quick answer
A kitchen becomes genuinely usable at about 2400mm of bench run, and workable at around 1800mm if the appliances are compact. Below that you are into kitchenette territory. The numbers that decide it are 400mm of bench beside the sink, 300mm beside the hob, and a 600mm bay for anything full-size.
Key points
- 2400mm of run is the point where a small kitchen stops feeling like a compromise.
- 1800mm works with a compact hob and a small sink but leaves almost no landing space.
- 400mm of bench beside the sink and 300mm beside the hob are the two numbers to protect.
- Go up rather than along. Full-height cabinetry is how small kitchens win back storage.
- Drawers, not cupboards. In a small kitchen it is the single biggest usability upgrade.
Small kitchens are not just big kitchens with less in them. Below a certain size, every decision is about protecting the few square metres of bench you have from being consumed by appliances and sinks. Get the priorities right and a 2400mm run is a genuinely good kitchen. Get them wrong and a 3600mm run is unusable.
The numbers that decide whether it works
| Element | Minimum | Why |
|---|---|---|
| Bench beside the sink | 400mm on one side | Somewhere for washing up and for wet things to drain |
| Bench beside the hob | 300mm | Somewhere to land a hot pan. Never put a hob hard against a wall or a tall unit |
| Between sink and hob | 600mm ideally | This is your only prep space in a small kitchen |
| Full-size appliance bay | 600mm | Dishwasher, oven or a standard fridge cavity |
| Slimline dishwasher | 450mm | Worth considering where 600mm cannot be found |
| Bench depth | 600mm | Do not reduce this to gain floor. You lose more than you gain |
| Bench height | About 900mm | Standard, and worth keeping even in a compact run |
How short can a run be
| Run length | What fits | Verdict |
|---|---|---|
| 3000mm | Sink, hob, dishwasher, decent prep bench between | A proper small kitchen with nothing missing |
| 2400mm | Sink, hob, one full-size appliance, workable prep | The point where it stops feeling compromised |
| 1800mm | Compact sink, two-burner or compact hob, slimline dishwasher | Works, but landing space is thin |
| 1500mm | Sink and hob, no dishwasher, minimal bench | Kitchenette. Fine for a sleepout or a studio |
| Under 1500mm | Sink and a hotplate | A tea point rather than a kitchen |
Winning back space
- Full-height cabinetry. In a small kitchen the vertical space is the only free space you have.
- Drawers instead of base cupboards. You see everything without kneeling, and nothing gets lost at the back.
- A single bowl rather than a bowl and a half. The second bowl costs 300mm of bench you cannot spare.
- A compact or two-burner hob if you genuinely cook on two rings.
- Wall cabinets to the ceiling rather than stopping short, with the rarely-used things at the top.
- An integrated or slimline dishwasher rather than losing a full 600mm bay.
Sleepouts, minor dwellings and studios
For a sleepout or a minor dwelling the brief is different again. There you are usually working to what the consent and the intended use require rather than to what makes a comfortable family kitchen, and a compact run with a sink, a two-burner hob and a bar fridge is often exactly right. It is worth checking what your consent specifies before designing, because the requirements for a minor dwelling differ from a room that is simply a bedroom with a bench in it.
Frequently asked questions
What is the minimum size for a usable kitchen?
About 2400mm of bench run is where a small kitchen stops feeling compromised. It works down to about 1800mm with compact appliances, and below 1500mm you are into kitchenette territory.
How much bench do I need beside the sink?
400mm on at least one side. That is where washing up sits and where wet things drain, and losing it is the most common mistake in a small kitchen.
Can I fit a dishwasher in a small kitchen?
A full-size one needs a 600mm bay, a slimline 450mm. If finding either means losing the prep bench between the sink and the hob, the kitchen will be worse for having it.
Should I reduce bench depth to gain floor space?
No. 600mm is what makes a bench usable and what appliances are built for. Take the space from somewhere else.
What is the single best upgrade in a small kitchen?
Drawers rather than base cupboards. You see the whole contents at once instead of losing things at the back of a shelf, and it changes how the kitchen feels to use daily.