Kitchen island ideas for every size of room.
An island is the most-requested feature in a new kitchen. Nearly every client who comes through the door asks about one. The honest answer is: sometimes it is a brilliant addition, sometimes it is the wrong idea for the room, and occasionally the thing people actually want is a peninsula, not an island at all. Here is a proper look at what works and what to think about before committing.
The space rule you cannot negotiate around
A kitchen island needs a minimum of 900mm of clear floor space on every accessible side. That is not a design preference — it is the minimum for an adult to open a base unit drawer, pull out a stool, and move past someone else without collision. In a smaller kitchen, 900mm is the floor, not the aspiration. Most of our island designs aim for 1000 to 1100mm on the main working sides.
What this means in practice: for a basic island (say 900mm wide by 1800mm long), you need a room that can accommodate the island plus those clearances on each side. A kitchen-diner that is 4 metres wide wall-to-wall can, just about, fit a modest island with runs of units on both long walls. Narrower than 3.8 metres and the numbers stop working — and at that point we usually talk to clients about a peninsula instead.
The other dimension people miss is length. An island shorter than about 1200mm looks awkward and provides limited utility. Most useful kitchen islands run 1500mm to 2400mm. Scale it to the room; an island that is proportionally too small in a large kitchen looks like a mistake.
What to put in an island: thinking through the brief
Not all islands do the same job. Before designing one, we always ask: what is this island primarily for? The answer shapes everything.
The prep-and-serve island
The most common configuration. Extra worktop space, usually with a waterfall edge or an overhanging section for bar stools on one side. Storage underneath — deep drawers on the cook's side, open shelves or lower cabinets on the seating side. No sink, no hob. This is the most flexible option because it does not require routing services to the island, which keeps costs down considerably.
A four-seater overhanging island in this configuration typically adds £4,000 to £8,000 to the project cost, depending on the worktop material and cabinet specification.
The island with a hob
Positioning the hob in an island is very popular in open-plan kitchen-diners because it puts the cook facing into the room rather than facing a wall. The practical requirements are more involved than a prep island: you need an extractor directly above (a ceiling-mounted island extractor, typically £800 to £2,500 for the unit alone), and a gas or electric circuit routing to the island position.
The seating side of a hob island needs to be carefully thought through. You want enough distance from the hob for comfort — ideally the seating is at the far end of the island from the cooking zone, not immediately adjacent. We generally design hob islands with a clear zone of at least 600mm between the hob and the nearest bar stool.
The island with a sink
Sinks in islands look excellent and function well if the plumbing can be routed economically. In a ground-floor kitchen extension with a concrete screed floor, the drain run can usually be taken through the floor without much difficulty. In an older property with suspended timber floors, routing waste pipes under the floorboards to an island can be more involved and expensive. We survey this specifically before recommending an island sink position.
Island design details that are worth specifying
Waterfall ends
A waterfall end is where the worktop material folds vertically down the side of the island instead of stopping at the edge. It is a modern, clean detail that works particularly well in stone or quartz. Budget an extra £600 to £1,400 per waterfall end depending on the material and the size of the panel.
Contrasting island cabinetry
A very common and good-looking choice: the perimeter units are one colour, the island is painted a different (usually darker) colour. A cream perimeter with a navy or dark green island, for example. The contrast reads well and avoids the slightly sterile feeling that an all-same-colour kitchen can have. The second colour adds minimal cost to the cabinet order — it is usually just a different door finish on the island units.
Open shelving versus closed doors on the seating side
The seating side of an island (the side facing into the room, away from the cook) can be finished with closed doors, open shelves, or a combination. Open shelving on the seating side is sociable and decorative but it needs to look tidy — books, plants, and carefully curated objects work; a jumble of sauce bottles and cereal boxes does not. Closed doors are lower maintenance. We often do a mix: open shelves at the top of the island end, closed doors below.
Pendant lighting
Two or three pendants above an island transform the feel of the space. The electrical run for island pendants should be planned before the plasterboard goes on the ceiling — adding it afterwards means chasing cables. We always include island pendant positions in the electrical specification if the client wants them.
For smaller rooms: the peninsula
A peninsula is an island that connects to the perimeter units at one end. It gives you most of the functionality of an island — extra worktop, seating on the room-facing side, additional storage — without requiring 900mm of clearance on four sides. In a room 3.2 to 3.8 metres wide, a peninsula is usually the correct call.
Peninsulas also work well when the kitchen opens into a living or dining area. The peninsula can function as a room divider — defining the cooking zone without enclosing it — with bar stools on the dining side creating an informal eating area.
We have built peninsulas from as little as £2,800 (a simple extended run of units with an overhanging worktop section) to £12,000 for a large, island-like peninsula with a hob and seating for four.
For rooms that genuinely cannot fit an island
If the room is under 3.2 metres wide and the perimeter is already fitted, the honest answer is that neither an island nor a peninsula will work well. The options are:
- A freestanding block on castors that can be moved aside when not needed.
- A fold-down section on the end of the existing run of units, gaining extra worktop area without occupying permanent floor space.
- A larger worktop overhang on the end of a run of units — enough for two stools, without the full island build cost.
These are real solutions that real households use daily. An island that is too tight to work around is worse than no island at all.
Costs at a glance
These are rough figures based on projects we have delivered recently. Every project is different; the survey and design process will produce a proper number for your specific island.
- Basic prep island, no services: £3,500 to £7,000 (cabinetry and worktop).
- Island with seating overhang: £5,000 to £9,000.
- Island with hob and ceiling extractor: £8,000 to £14,000 including electrical and extraction work.
- Island with sink (concrete screed floor): £7,000 to £12,000 including plumbing.
- Peninsula, no services: £2,800 to £6,500.