A Kitchen That Finally Works For You
Open-Plan Living Without Losing The Practical Stuff
A good kitchen extension isn't just more square footage, it's better light, better flow between cooking and living space, and enough storage that the room still works day to day.
We design around how your household actually uses the kitchen, not a generic open-plan template.
Kitchens We've Helped Create
See Our Kitchen Extension Projects
From side return kitchen extensions to full open-plan rear rebuilds, our projects page shows the range of kitchen extensions we've designed across London.
What A Kitchen Extension Really Costs
Kitchen extension cost varies with size, structural work, glazing, and finish specification, there's no single figure that applies to every project.
A modest side return costs considerably less than a large rear extension with structural glazing and a new steel frame. We talk through realistic ranges at your first consultation, based on your actual scope.
Planning Permission And Party Wall Considerations
Many single storey kitchen extensions qualify under permitted development, while larger rear extensions, wrap-arounds, and conservation area properties usually need full planning permission.
If the extension sits on a shared boundary, a party wall agreement is often needed too. We check all of this before design work begins.
Structural Glazing, Steels And Building Regulations
Open-plan kitchen extensions often rely on structural steels to remove internal walls and large sliding or bifold doors to bring in light.
We prepare the structural calculations and building regulations drawings, working with engineers where needed, so the finished kitchen is safe and signed off properly.
How A Kitchen Extension Project Runs
We start with a site visit and a conversation about how you cook, entertain and store things day to day.
From there we develop concept drawings, prepare the planning application, then support you through the build itself so the finished kitchen matches the design.
Our Track Record
2
Hands-On Team
100+
Projects
99%
Planning Approval Success Rate
10+
Years in Practice
What our clients say
Every kitchen extension starts with understanding how a household actually lives in that room. Here's what clients say about designing and building with us.
"We wanted an open-plan kitchen but didn't want to lose storage. Design United Studio designed around how much we actually cook, not just how the room would photograph."
"The structural glazing was the whole reason we wanted the extension, and it was handled properly from the drawings through to building control sign-off."
"No surprises on cost once the design was finalised. What they quoted at the start matched what we paid at the end."
BEN H.
CHARLOTTE L.
DEV N.
Straight answers before you call
Frequently asked questions
Answers to the questions we hear most from homeowners planning a kitchen extension in London.
