The short answer
A kitchen island typically costs £1,500–£5,000+ in 2026, depending on size, worktop and whether it carries a sink, hob or seating. A simple unit-and-worktop island sits at the lower end; adding a sink, hob, power, or running plumbing and a gas or electrical supply to it pushes the cost up. An island is worth it if you have the space — ideally at least a metre of clearance all round — and need the extra worktop, storage or seating. See the pillar cost guide for context.
Islands are one of the most-wanted kitchen features, but they only work in the right space and they add real cost — especially once you put a sink or hob in them. This guide sets out typical 2026 island costs, what drives the price, the clearance an island needs, and how to judge whether it is worth it for your kitchen.
Island costs at a glance
- Simple island £1,500–£3,000
- Island with sink or hob £3,000–£5,000+
- Clearance needed ~1 metre all round
- Premium worktop adds £250–£400/m²
- Plumbing / power run extra labour
- Worth it if you have the space
What an island costs and why
A basic island is a run of cabinets topped with a worktop, costing from around £1,500. The cost climbs with the worktop choice — quartz or granite at £250–£400/m² is far dearer than laminate — and with the services you add. A sink needs water supply and waste; a hob needs power or a gas supply and an extractor (often a downdraft); seating needs an overhang and sometimes power for stools to charge devices. Each of these adds materials and labour.
| Island type | Typical cost | What it adds |
|---|---|---|
| Simple (storage + worktop) | £1,500–£3,000 | Prep space and storage |
| With seating overhang | £2,000–£3,500 | Casual dining, sociable |
| With sink | £3,000–£4,500 | Plumbing run, prep zone |
| With hob and extractor | £3,500–£5,000+ | Power/gas, downdraft extractor |
How much space an island needs
An island only works if there is room to use it. A common guide is to allow at least around a metre of clearance on every side so people can pass, open doors and drawers, and stand to work. In a smaller room, a peninsula — an island attached to a run at one end — can give some of the benefit with less clearance. Squeezing an island into too small a space is the most common island mistake and makes the kitchen harder to use, not easier. See layout ideas.
Is an island worth it?
An island is worth it if you have the floor space and you will use the extra worktop, storage or seating it provides — it can transform how sociable and practical a larger kitchen feels. It is not worth it if it leaves cramped walkways or replaces more useful wall storage. For a smaller kitchen, the money may be better spent on a clever layout or a peninsula. Judge it on your room and how you cook, not on whether islands are fashionable.
How an island appears in a quote
An island can be a significant line in a quote, especially with services. Ask for it to be itemised: the units, the worktop (and its area), any sink or hob, the extractor, and the plumbing, electrical or gas work to supply it. This makes it easy to see the cost and to decide whether to keep, simplify or drop the island. This is general information; island costs vary with size, specification and the services involved.
Compare kitchen quotes
An island adds cost and needs space. Compare itemised quotes from kitchen design and fitting specialists who can plan it to scale.
Frequently asked questions
How much does a kitchen island cost?
A simple storage-and-worktop island typically costs £1,500–£3,000 in 2026. Adding seating, a sink or a hob with extractor pushes it to £3,000–£5,000 or more, mainly because of the worktop choice and the plumbing, power or gas needed.
How much space do I need for an island?
As a guide, allow at least around a metre of clearance on every side so people can pass and open doors and drawers. If your room is too small for that, a peninsula attached to a run may give some of the benefit with less clearance.
Is a kitchen island worth it?
It is worth it if you have the space and will use the extra worktop, storage or seating — it can make a larger kitchen far more practical and sociable. It is not worth it if it leaves cramped walkways or you have to give up more useful wall storage to fit it.
Can I put a hob or sink in an island?
Yes, but it adds cost. A sink needs water and waste run to the island; a hob needs power or gas and usually a downdraft extractor. A gas hob must be connected by a Gas Safe registered engineer and new circuits are notifiable under Building Regulations Part P.
Sources & further reading
- KBSA (Kitchen Bathroom Bedroom Specialists Association) — guidance on island design and clearances
- Gas Safe Register — rules for gas hobs in islands
- GOV.UK / Building Regulations Approved Document P — electrical safety in dwellings
- TrustMark — finding and checking registered tradespeople
This is general information, not advice for your specific property or installation. Costs and outcomes vary with size, specification and the services involved.