Choosing the right kitchen unit can be one of the most important decisions in a renovation or new build. With modular systems, standardised sizes, and a wide range of price points, understanding the basics of kitchen units can save both time and money. This guide covers what you need to know about sizing, types, and where to find the best value.
What Are the Standard Sizes for Kitchen Units?
Fitted vs freestanding vs modular
Common widths: 300–1000mm
IKEA, B&Q, Howdens, Screwfix
Budget to premium
- Standard kitchen unit widths are 300, 400, 500, 600, 800, 900, and 1000mm; depth is typically 600mm for base units and 300mm for wall units; height is 720mm for base and 720mm for wall units.
- IKEA offers the widest range of modular units at competitive prices, but assembly is required.
- B&Q clearance can yield significant savings if you are flexible with sizes and styles.
- Freestanding units are easier to install and ideal for rented homes, but offer less storage density.
- Second-hand kitchen units from sites like eBay or Gumtree can save 50–70% but require careful inspection and transport.
| Feature | Base Unit | Wall Unit | Tall Unit |
|---|---|---|---|
| Standard Depth | 600mm | 300mm | 600mm |
| Standard Height | 720mm | 720mm | 2100mm |
| Common Widths | 300–1000mm | 300–1000mm | 300–600mm |
| Popular Retailers | IKEA, B&Q, Howdens, Screwfix | Same | Same |
| DIY Friendliness | Moderate (IKEA flat-pack easy) | Moderate | Harder (heavy) |
What does a 1000mm kitchen unit mean?
A 1000mm wide base unit is one of the larger standard sizes available, often used for double sinks, large drawers, or as a base for a rangemaster-style cooker. While less common than 600mm units, they are still part of most modular ranges from retailers like B&Q and Howdens. Always check whether the range you are considering includes this width before planning a layout.
Where Can I Find Cheap Kitchen Units?
Are B&Q kitchen units clearance worth looking at?
Clearance kitchens from B&Q are often a practical way to buy cheaper units. Ex-display, end-of-line, and discontinued ranges can reduce costs significantly. However, stock varies by store, and online listings may not always reflect in-store availability. It is generally advisable to visit a branch in person to confirm what is on offer.
How to buy kitchen units second hand safely?
Second-hand kitchen units can be found through local resale platforms, renovation surplus, and clearance channels. To buy safely, always inspect units in person. Hidden damage, mismatched doors, and missing fixings are common issues. Measure your space beforehand and bring a tape measure to avoid surprises. Prices can be 50–70% lower than new, but transport and disassembly are usually your responsibility.
Are IKEA kitchen units a good value option?
IKEA is a major option for modular kitchen systems with standardised cabinet sizing. Their ranges are typically aimed at DIY-friendly installation, which can reduce overall project costs. Assembly is required, but the wide range of styles and competitive pricing make them a strong contender for budget-conscious buyers. However, be aware that some IKEA depths may differ slightly from UK trade standards, so always check product specifications.
For the best value, compare complete ranges rather than individual cabinets. Handle, plinth, panel, and worktop costs can change the real price significantly. Retailers like B&Q, Howdens, and IKEA each have different pricing structures for full kitchen systems.
What Are the Different Types of Kitchen Units?
Should I choose a freestanding kitchen unit?
Freestanding kitchens use individual cabinets and appliances that are easier to move, replace, or reconfigure. They suit renters and budget-led projects more than bespoke fitted layouts. While they offer less storage density than fitted systems, they are generally quicker to install and do not require permanent wall mounting.
What are some kitchen unit ideas for small kitchens?
For smaller spaces, consider using tall units for vertical storage, drawer units for easier access, and corner units to make use of awkward spaces. Half-height base units, around 360mm carcass height plus legs, can work well for open shelving or breakfast bars. Standard 300mm and 400mm wide units help maximise every inch of available wall space.
When measuring for small kitchens, remember to account for plinths, worktops, end panels, fillers, and corner solutions. These affect the final installed size more than the carcass measurement alone. Measure wall-to-wall width at several points, because older rooms are often not perfectly square.
How Have Kitchen Unit Standards Evolved?
- 1950s: Fitted kitchens became popular in UK homes, establishing the concept of integrated base and wall units.
- 1990s: The flat-pack revolution, led by IKEA and other retailers, made modular kitchen units widely accessible and affordable.
- 2000s: Standard sizes became more uniform, with 600mm emerging as the most common width for base units.
- 2020s: Modular units with adjustable legs and standardised dimensions dominate the market, making DIY installation more realistic than ever.
What Is Certain and Uncertain About Kitchen Unit Measurements?
| Established Information | Information That Remains Unclear |
|---|---|
| Standard sizes are well-established (e.g., 600mm depth base units). | Some brands may have non-standard depths (e.g., IKEA uses 620mm for some). Always check product specs. |
| Second-hand units can be in excellent condition. | Hidden damage, mismatched doors, missing fixings are common. Always inspect in person. |
| B&Q clearance is real and time-limited. | Stock varies by store; online may not reflect in-store offers. |
What Context Should You Consider When Choosing Kitchen Units?
Comparing freestanding and fitted kitchens involves cost, flexibility, and installation effort. Fitted kitchens use integrated, fixed units and are usually the best choice for a uniform look and maximum storage efficiency. Freestanding units offer greater flexibility for renters and those on a tighter budget. The most common cabinet materials include MDF, plywood, and solid wood, each with different durability profiles. For budget shopping, comparing complete ranges from retailers like IKEA, B&Q, and Howdens is essential, as handle, plinth, and worktop costs can significantly change the total price.
Howdens supplies trade-style kitchens and offers a kitchen cabinet buying guide with 360mm, 720mm, and 900mm wall heights, plus widths like 350mm and 450mm and 575mm depths. Screwfix is better known for trade tools and fittings than full kitchen ranges, making it more relevant for installation materials and accessories.
What Do the Experts Say About Kitchen Units?
“Base units are typically 600mm deep and 720mm high, while wall units are shallower at around 300mm deep.”
B&Q product page
“Explore our wide range of wall and base kitchen units to find the perfect size and style to create your ideal kitchen layout.”
IKEA kitchen cabinets page
“Quality kitchen cabinets at Howdens. Responsibly sourced materials. UK manufactured.”
Howdens kitchen cabinets page
What Should You Do Next After Reading This Guide?
After understanding kitchen units, the next step is to plan your kitchen layout. Free tools like the IKEA kitchen planner or B&Q planner can help visualise the space. Consider ordering sample doors to match your decor, and for DIY installation, follow step-by-step guides on installing base and wall units safely. If you are on a tight budget, set alerts for clearance sales and browse second-hand marketplaces. For more inspiration, explore our kitchen design ideas and kitchen worktops buying guide.
Frequently Asked Questions
Can I install kitchen units myself?
Yes, many flat-pack kitchen units are designed for DIY assembly. Brands like IKEA provide detailed instructions and tools. However, installing wall units and connecting plumbing may require professional help. Always follow local building regulations.
What is the most common kitchen unit width?
The most common width is 600mm, which matches many built-in appliances and the widest range of off-the-shelf accessories.
Are B&Q kitchen units good quality?
B&Q offers a range from budget to mid-range options. Quality is generally reliable for the price, but it is worth checking product specifications and customer reviews before purchasing.
How deep are standard wall units?
Standard wall units are typically around 330mm deep, though some modular systems may vary slightly.
What is the difference between fitted and freestanding kitchen units?
Fitted kitchens are fixed and built-in, offering a uniform look and maximum storage efficiency. Freestanding units are individual cabinets that can be moved or reconfigured, making them ideal for renters.
Where can I find second-hand kitchen units?
Second-hand kitchen units are available on local resale sites like Gumtree and Facebook Marketplace, as well as through renovation surplus and clearance channels.
Do I need to measure anything before buying kitchen units?
Yes, measure wall-to-wall width at several points, ceiling height, and check plumbing, sockets, and appliance spaces before choosing cabinet widths.
What are the standard heights for tall kitchen units?
Tall units often run to around 2100mm or more, depending on the range, and are used for pantry storage or integrated appliances.
Is Howdens cheaper than IKEA?
Howdens is a trade supplier and may offer better value on complete kitchen systems, while IKEA is generally more affordable for individual modular units. It depends on your specific requirements.
What is a 1000mm kitchen unit used for?
A 1000mm wide base unit is often used for double sinks, large drawers, or as a base for a rangemaster-style cooker.
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Adam Pryor is Managing Editor at CultureObserver.uk, running the daily news list, publishing schedule and newsroom workflow.