Why Kitchen Planning Matters More Than You Think
A kitchen is the most expensive room in the house to get wrong. The average UK kitchen renovation costs between eight and fifteen thousand pounds, and a significant portion of that budget goes on units, worktops, and appliances that are fixed in place once installed. Move a sink after fitting and you are looking at replumbing, new worktop cuts, and possibly new flooring. Move it on a floor plan and it takes two seconds.
Good kitchen planning is not about choosing the prettiest cabinets or the trendiest tiles. It is about ensuring the layout works — that you can cook, clean, and move around efficiently every single day. A beautifully styled kitchen with a poor layout will frustrate you for years. A well-planned kitchen with modest finishes will be a pleasure to use.
This guide walks you through the entire planning process, from understanding layout types to briefing your fitter. If you want to follow along interactively, open our free Kitchen Planner — no account or download needed.
The Work Triangle Explained
The work triangle is the foundational concept in kitchen design. It connects the three most-used stations in any kitchen: the hob (cooking), the sink (washing), and the fridge (storage). The idea is simple — these three points should form a triangle, and each leg of that triangle should be between 1.2 and 2.7 metres. The total perimeter should not exceed 8 metres.
Why does this matter? Because when you cook a meal, you move constantly between these three zones. If they are too far apart, you waste steps and energy. If they are too close together, the kitchen feels cramped and there is not enough worktop space between stations.
The work triangle is not a rigid rule. In larger kitchens with islands, or in kitchens where two people cook together, the triangle evolves into work zones. But for the majority of home kitchens, particularly galley and L-shaped layouts, it remains an excellent starting point.
Kitchen Layout Types
Galley Kitchen
A galley kitchen has two parallel runs of units facing each other, with a walkway between them. It is one of the most efficient layouts because everything is within easy reach. The recommended minimum width between the two runs is 1,000 mm — ideally 1,200 mm if two people use the kitchen at the same time.
Galley kitchens work brilliantly in narrow spaces such as terraced houses and apartments. Place the sink and hob on one side and the fridge and oven housing on the other. Keep the tallest units (fridge, larder, oven tower) at the ends of the runs so they do not break up the worktop visually.
L-Shaped Kitchen
The L-shape uses two adjacent walls, leaving the rest of the room open. It is the most versatile layout and suits almost any room size. The work triangle fits naturally, with one station on each arm of the L and the third at the corner.
Avoid placing the hob or sink right in the corner — it wastes the space and makes the station awkward to use. Instead, position units so the corner houses a carousel, a pull-out system, or simply a section of worktop.
U-Shaped Kitchen
Three runs of units on three walls create the U-shape. It provides the most storage and worktop space of any layout, making it ideal for keen cooks and larger families. The minimum internal width between opposite runs should be 1,500 mm to allow doors and drawers to open without collision.
The downside is that U-shaped kitchens can feel enclosed. If space allows, leave one arm as a breakfast bar or peninsula to open up the room.
Island Kitchen
An island is a freestanding unit placed in the centre of the kitchen, separate from the perimeter runs. It adds worktop space, storage, and often houses a hob, sink, or seating. Islands require a large room — you need at least 1,000 mm clearance on all sides, which typically means the kitchen must be at least 4 metres wide.
Islands are popular in open-plan kitchen-diners because they provide a natural boundary between the cooking and dining zones. However, adding plumbing or gas to an island increases cost and complexity, so plan this early.
Peninsula Kitchen
A peninsula is essentially an island that is attached to a wall or the end of a run of units. It provides many of the same benefits — extra worktop, seating, zoning — without requiring as much floor space. It is an excellent compromise for kitchens that are too small for a full island.
Step-by-Step Kitchen Planning Process
1. Measure Your Kitchen
Measure every wall, noting the positions of doors, windows, plumbing connections, gas supply, electrical sockets, and any structural features such as chimney breasts, boiler cupboards, or soil stacks. Measure in millimetres for kitchen planning — precision matters when fitting units.
2. Identify Fixed Constraints
Some things are expensive or impossible to move: the soil stack, external waste pipes, gas supply, structural walls, and windows. Identify these first, because they dictate where the sink, hob, and extractor can realistically go.
3. Choose Your Layout Type
Based on the room shape and constraints, select the layout that fits best. Do not force an island into a room that is too small. Do not choose a galley layout if you have a large, square room — you will waste space.
4. Position the Sink
The sink is usually positioned first because it is the most constrained by plumbing. Place it near existing waste pipes if possible. Under or near a window is traditional and pleasant — natural light while washing up is universally appreciated.
5. Position the Hob and Oven
Place the hob so there is at least 300 mm of worktop on each side for landing space. The extractor hood or downdraft should be directly above or behind the hob. The oven can be in a separate housing at a comfortable height — no more bending to check a roast.
6. Position the Fridge-Freezer
Place the fridge at the end of a run, near the kitchen entrance if possible. This allows someone to grab a drink or snack without walking through the cooking zone. Ensure the door opens towards the worktop, not away from it.
7. Fill in the Remaining Units
With the big three in place, add base units, wall units, tall units, drawers, and specialist storage (spice racks, pan drawers, recycling bins). Prioritise drawers over cupboards for base units — research consistently shows that drawers are more usable and accessible.
8. Check Clearances
This is critical. Use the clearances guide below to verify that every door, drawer, and appliance can open without obstruction.
Essential Kitchen Clearances
- Between opposite runs: minimum 1,000 mm, ideally 1,200 mm.
- Between island and perimeter units: minimum 1,000 mm on all sides.
- In front of the oven: 1,000 mm when the door is open.
- In front of the dishwasher: 1,000 mm when the door is open.
- Between the hob and a window: minimum 600 mm to prevent curtain fires.
- Landing space beside the hob: 300 mm minimum on each side.
- Landing space beside the sink: 300 mm minimum for draining.
- Worktop depth: standard is 600 mm.
- Worktop height: standard is 910 mm, but adjust for comfort.
Common Kitchen Planning Mistakes
These are the errors we see most often, and every one of them is avoidable with a good plan:
- Not enough worktop space. You can never have too much. If in doubt, add more.
- Blocking the work triangle. If the main walkway between rooms cuts through the triangle, you will have people walking through your cooking zone constantly.
- Forgetting the bin. A pull-out bin needs a dedicated unit. Plan for recycling as well as general waste.
- Insufficient lighting. Under-cabinet lighting is not a luxury — it is essential for safe food preparation. Plan lighting at the same time as the layout.
- Corner cupboards without solutions. A blind corner cupboard is a black hole. Specify a corner carousel, a LeMans pull-out, or a magic corner system.
- Placing the dishwasher too far from crockery storage. You unload it daily — make that process as short as possible.
- Ignoring ventilation. A hob without adequate extraction creates grease, moisture, and odour problems. External extraction is always better than recirculation if possible.
- Overlooking socket positions. You need sockets for the kettle, toaster, mixer, phone charger, and anything else that lives on the worktop. Plan at least four double sockets above the worktop, positioned between 150 mm and 300 mm above it.
Briefing Your Kitchen Fitter
A well-drawn floor plan is the single most useful thing you can hand to a kitchen fitter. It communicates your intentions clearly, reduces misunderstandings, and gives the fitter a reference to work from. Here is what to include:
- Accurate room dimensions with all features marked.
- Positions of plumbing, gas, and electrical services.
- Your proposed layout with unit sizes annotated.
- Appliance specifications — model numbers or at least exact dimensions.
- Notes on anything unusual: sloping floors, out-of-square walls, ceiling heights that vary.
You can produce all of this using our free Kitchen Planner. Draw your room, place units and appliances, then export the plan to share with your fitter. It takes less than an hour and can save thousands in avoided mistakes.
A Note on Building Regulations
Most kitchen refits do not require planning permission or building regulations approval, provided you are not making structural changes. However, electrical work in kitchens must comply with Part P of the Building Regulations in England and Wales, and gas appliances must be installed by a Gas Safe registered engineer. If in doubt, check with your local building control office before starting work.
Start Planning Your Kitchen Today
A kitchen renovation is a significant investment. Spending an hour or two planning the layout before you commit to buying anything is the smartest thing you can do. Open the free Kitchen Planner, draw your room, and experiment with different layouts. You might be surprised by what fits — and what does not.