Objective

This guide explains how to choose a practical kitchen extension design based on your property type, available space, layout, natural light, lifestyle and planning requirements.

Key Takeaways

• Match the extension to your home’s existing layout.
• Compare rear, side-return and wrap-around options.
• Plan the kitchen around how you actually live.
• Use rooflights and bi-fold doors carefully to improve daylight.
• Check planning permission and building regulations early.
• Consider your garden, budget and future needs before deciding on the extension size.

Introduction

A bigger kitchen sounds simple until you start deciding where to extend, how far to build and how the new space will actually work. For London homeowners, the right kitchen extension design needs to suit the house, garden, daily routines and planning rules, not just look good in a brochure.

If you live in a Victorian terrace, an Edwardian home or a semi-detached property, your options can be very different. Here’s the thing: the best extension is rarely the biggest one. It is the one that solves the problems you have today while giving you useful space for years to come.

 

Table of Contents

1. Start With Your Home and Lifestyle
2. Choose the Right Extension Type
3. Get Your Kitchen Layout Right
4. Plan for Natural Light
5. Check Planning and Building Rules
6. Make Your Final Design Decision
7. FAQs

1. Start With Your Home and Lifestyle

Before searching for kitchen extension ideas, look at what is wrong with your existing kitchen.

Is there not enough storage? Do you need space for family meals? Would you like an open-plan kitchen and dining area? Perhaps your current kitchen feels dark or has poor access to the garden.

Studio20’s Richmond kitchen extension guidance recommends starting with clear goals, such as creating storage, adding an island or incorporating a dining area.

For example, a growing family may need a large dining zone and practical storage, while a couple may prefer a smaller kitchen with more garden space.

 

2. Choose the Right Extension Type

Your property often determines which house kitchen extension will make the most sense.

 

Extension option	Often suitable for	Main point to consider
Rear kitchen extension	Homes with usable rear gardens	How much garden you want to retain
Side-return extension	Many Victorian and Edwardian terraces	Available side passage width
Wrap-around extension	Homes needing substantially more space	Cost, planning and garden impact
Single-storey extension	Family kitchen-diners	Layout and overall floor area

 

For kitchen extension ideas for small homes, a side-return can be particularly useful because it makes use of space that may otherwise contribute little to the kitchen.

A rear extension may be better where you want a wider kitchen-diner with larger areas of glazing. A wrap-around option can provide more floor space, but you should ask whether you really need every extra metre.

 

3. Get Your Kitchen Layout Right

More space does not automatically mean a better kitchen.

Start by dividing the room into practical zones:

• Cooking and food preparation
• Cleaning
• Storage
• Dining
• Family or living space

Think about where your island, appliances, cupboards and dining table will go before finalising the extension size.

If you want an open-plan kitchen, also consider noise, cooking smells, heating and how people will move through the room.

What this really means is that your kitchen should be designed around your daily routine, rather than forcing your routine around the new room.

 

4. Plan for Natural Light

Natural light can make a new kitchen feel more spacious and comfortable.

Depending on your property, you might consider:

• Rooflights or skylights
• Larger windows
• Roof lanterns
• Bi-fold doors
• Sliding doors

However, more glass is not always the answer. Window and door positions should work with your kitchen units, furniture, privacy needs and the direction your property faces.

Studio20’s London work includes kitchen extension projects where improved space, daylight and practical family use are key design considerations.

 

5. Check Planning and Building Rules

This is one area where you should not rely on assumptions.

Some home extensions in England can benefit from permitted development rights, but strict limits and conditions apply. Larger single-storey rear extensions can also be subject to a neighbour consultation process.

Your property may also have additional restrictions, particularly if it is in a conservation area or has other planning controls.

Planning permission and building regulations are different matters. Building Regulations deal with how building work is constructed and cover areas such as structure, safety, insulation and energy performance.

There is also a recent regulatory point worth knowing: the 2026 Approved Document L provides current guidance supporting Part L of the Building Regulations 2010 for dwellings in England.

So, before committing to a design, check the rules that apply to your specific property.

 

6. Make Your Final Design Decision

Use this simple test before choosing your kitchen extension design:

Space → Lifestyle → Light → Layout → Planning → Future needs

If a proposed design performs well in all six areas, you are starting from a much stronger position.

For London homeowners, professional input can also help turn initial kitchen extension ideas into workable plans. Studio20 Architects provides residential extension services and planning-related support for homeowners considering projects across London.

 

Your Kitchen Should Work for Your Life

The right extension is not simply about adding floor area. It should make cooking easier, improve storage, give your family enough room to eat and spend time together, and make better use of the property you already own.

If you are comparing options for kitchen extension design in London, start with your home’s actual needs rather than copying another property’s design.

 

Ready to explore your options?

Review your existing floor plan, list the problems you want to solve and speak with Studio20 Architects about what could work for your property.

 

Frequently Asked Questions

1. What type of kitchen extension is best for a terraced house?

A side-return or rear extension can work well for a terraced property. The best choice depends on your existing floor plan, side access, garden size and planning restrictions.

2. How do I choose the right kitchen extension size?

Start with how you will use the room. Allow enough space for kitchen units, circulation, storage and dining without sacrificing more garden area than you need.

3. Do I need planning permission for a kitchen extension?

Not necessarily. Some extensions may qualify under permitted development, but the rules have specific limits and conditions. Check your property before starting work.

4. How can I add more natural light to my kitchen extension?

Rooflights, skylights, well-positioned windows and bi-fold doors can all help. Their position should be planned alongside your kitchen layout and privacy needs.

5. Are building regulations needed for a kitchen extension?

Building work must comply with applicable Building Regulations. The requirements depend on the work involved and cover important areas such as structure, safety and energy performance.