Costs
Is a Kitchen Island Worth It?
Updated 2 min read
The short answer
The decision is arithmetic, not preference. You need 900mm of clearance on every side you use, 1050–1200mm where two people work or an appliance door opens. If adding an island drops any of those below the minimum, it will make the kitchen worse every day regardless of how good it looks on the plan.
The clearance test
- Measure the floor area availableFrom the face of the perimeter cabinets to the opposite wall or cabinet run.
- Subtract 900mm for each aisleOne aisle if the island backs onto open space, two if you circulate both sides.
- What remains is your maximum island depthIf that is under about 600mm, an island is not viable. Under 900mm it will feel mean.
- Check appliance door swingsA dishwasher or oven door opening into the aisle needs the full 1050–1200mm, not 900mm.
- Check for seatingOverhang seating needs 300mm of counter overhang plus roughly 900mm behind the stool.
- Walk it with tape on the floorMark the island footprint with painter’s tape and live with it for a day. This test has stopped more bad islands than any drawing.
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Island versus alternatives
| Option | Floor needed | Best when |
|---|---|---|
| Full island with seating | Large | Open-plan kitchen with genuine room |
| Prep island, no services | Moderate | You want work surface, not a project |
| Peninsula | Less | One side attaches, so only one aisle needed |
| Movable trolley | Least | Small kitchen, flexible use |
| No island, better perimeter | None | When the clearance test fails |
Answers
Frequently asked questions
- How much space do I need for a kitchen island?
- 900mm of clearance on every side you use, and 1050–1200mm where two people work simultaneously or where an appliance door opens into the aisle. Below those numbers the island technically fits and makes the kitchen unpleasant.
- Does an island need a sink or cooktop?
- No, and a clean prep island without services is cheaper, simpler and more flexible. Adding services brings plumbing or ventilation, expands permit scope, and fixes the island in place permanently.
- Why do islands cost more per foot than wall cabinets?
- Because an island is finished on every side rather than having a back you never see, it often carries seating overhang support, and it frequently involves services. A wall run has a wall to fix to and a hidden back.
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