A kitchen extension is one of the most popular and effective ways to transform your home. Extending your kitchen space can significantly improve the functionality and flow of your living area. Not only can it add valuable space, but it also increases functionality, enhances natural light, and boosts the overall value of your property. Whether you’re dreaming of a larger open-plan living area, a kitchen-diner with garden views, or simply more storage and worktop space, careful planning is essential to make your extension a success. In this blog, we’ll walk you through the key things you need to know when planning a kitchen extension.

Why Extend Your Kitchen?

The kitchen is often described as the heart of the home, and for good reason. It’s not just where we cook – it’s where we socialise, entertain, and spend quality family time. But in many properties, the kitchen can feel too small, dark, or disconnected from the rest of the house. Extending your kitchen can provide more space and create an extended space for family activities, making the area more open, versatile, and seamlessly connected to other parts of your home.

Extending your kitchen can help you:

• Create an open-plan kitchen and dining room or dining room – combining these spaces increases floor space, promotes a spacious, connected environment, and enhances social and entertaining opportunities.
• Bring in more natural light – making the space brighter, warmer, and more inviting.
• Add storage and workspace – perfect for busy family life or those who love to cook.
• Increase property value – a high-quality extension is a big selling point for buyers.

Step 1: Understanding What You Can Build

Before diving into design, it’s important to understand the practicalities. Your extension will be subject to planning laws and building regulations.

• Permitted Development Rights: Many kitchen extensions fall under permitted development, meaning you don’t need full planning permission if your project meets certain criteria (such as size limits and not extending beyond certain boundaries).
• Planning Permission: If your design goes beyond these limits – for example, if you’re building a larger wraparound extension – you’ll need formal approval from your local authority. You may need planning permission or require planning permission for certain types of new extension, especially if your property is semi detached or located in conservation areas, where stricter rules apply.
• Building Regulations: Regardless of planning, your extension must comply with building regulations covering insulation, ventilation, electrics, and structural safety.

Single storey extensions are common, but they may have different requirements, so always check if you need planning permission. Before starting work, assess existing services like heating and electrics to ensure your new extension integrates smoothly and avoids unexpected costs.

Always check with a professional architect, builder, or your local authority to confirm what applies to your project.

Step 2: Kitchen Extension Ideas

Once you’ve got the green light, it’s time for the fun part: design. When planning your extension, think carefully about how you want the space to work for your lifestyle. Consider your floor plan and how much space you need for different activities, such as cooking, dining, and storage. Successful kitchen extension projects start with clear goals for space and layout.

Layout and Flow

Decide whether you want a large island, kitchen island or island unit, or an L-shaped layout. Open-plan designs are especially popular, creating a social hub where cooking, dining, and relaxing all blend together, but broken plan layouts are also a great alternative for creating defined zones within the space.

A kitchen island or breakfast bar can help define the dining area, provide additional storage, and act as a focal point for socialising.

Light and Views

One of the biggest challenges in extensions is ensuring the new space doesn’t feel dark. That’s where glazing comes into play. Using bifold doors, french doors, and glazed doors can maximise natural light and connect the kitchen to the garden space or outdoor space, enhancing the flow between indoor space and outside space. Incorporating rooflights in a flat roof can help achieve maximum light and brighten the indoor space. Additionally, artificial lighting and task lighting are important to supplement natural light, especially on the ground floor or in areas with less outside space.

Style and Materials

From sleek modern designs with clean lines to traditional country-style kitchens, the extension should reflect your taste while complementing the rest of your home. Incorporating bespoke features and premium materials can elevate your kitchen extension, adding a luxurious, tailored feel and potentially increasing the overall cost. Materials like exposed brick, timber, and glass can all make a striking statement. Exposed structural elements, such as steel beams, can be used as bold design statements, creating open-plan spaces and enhancing the visual flow between indoors and outdoors. For added comfort and to save wall space, consider underfloor heating, which provides even warmth and is ideal for modern kitchen extensions.

Step 3: Considering Roof Lanterns and Rooflights

When it comes to filling your kitchen extension with natural light, nothing beats a roof lantern or rooflight. These stylish additions are designed to sit within a flat or pitched roof, creating a stunning feature while drawing sunlight deep into your home.

The Benefits of a Roof Lantern or Rooflight:

• Maximum Natural Light: Even if your extension doesn’t face the sun directly, a lantern or rooflight channels daylight into the space.
• Sense of Space: By opening up the ceiling to the sky, they create a feeling of height.
• Energy Efficiency: Modern designs are thermally efficient, helping to retain heat in winter while keeping your kitchen comfortable in summer.
• Design Feature: A roof lantern isn’t just practical – it’s a striking architectural feature that can become the focal point of your extension.

Imagine cooking dinner while bathed in natural light or sitting at the dining table under the stars – a roof lantern or rooflight can completely transform the atmosphere of your kitchen.

Step 4: Kitchen Extension Cost

Costs for kitchen extensions vary widely depending on size, design, and finishes. Extension cost is often calculated on a per square metre basis, with prices varying depending on the complexity of the design and the quality of finishes. As a rough guide:

• A small extension might start from around £20,000.
• Larger, high-spec open-plan spaces can easily exceed £50,000.

When budgeting, don’t forget to factor in:

• Professional fees (architect, structural engineer, planning applications).
• Building materials and labour.
• Kitchen units, appliances, and fittings.
• Glazing, including windows, doors, and roof lanterns.
• Finishing touches such as flooring, lighting, and décor.
• The cost of bespoke features, as adding customised or high-end elements can significantly increase the overall extension cost.

Step 5: Contacting Designers

A kitchen extension is a big investment, so it’s important to work with trusted professionals. Look for:

• An architect or designer who can bring your vision to life.
• Builders with proven experience in extensions.
• Specialist suppliers for key elements like glazing and roof lanterns.

Why Choose Lantern Superstore?

If you’re planning a kitchen extension, choosing the right roof lantern or rooflight supplier is just as important as picking your builder or kitchen units. That’s where Lantern Superstore comes in.

We are a market-leading online supplier of roof lanterns and rooflights, trusted by homeowners and tradespeople across the UK.

Whether you’re creating a cosy family kitchen or a large open-plan space, our roof lanterns and rooflights can bring in the light and elevate your design. Contact us today to find out how we can help you bring your dream kitchen extension to life.