Kitchen Extension Services London – Expert Kitchen Extension Design & Build Across London
Dreaming of a bigger, brighter kitchen but don't want the cost and upheaval of moving? A kitchen extension is one of the most rewarding investments a London homeowner can make. At SBDS Construction Ltd, we provide complete kitchen extension services across London and Essex — transforming cramped, closed-off kitchens into open, light-filled spaces where your family will love to cook, eat and spend time together.
As experienced kitchen extension builders in London, our skilled team manages the entire project under one roof: design, structural work, planning support, foundations, construction, electrics, plumbing and finishing. We handle every detail so you do not have to, keeping the work clean, on schedule and built to last. Every extension is backed by our written warranty, and our 5.0-star Google rating reflects the standard we bring to every home.
From a simple single-storey rear extension to a full wrap-around or a striking glazed extension, we tailor each project to your property, your budget and the way you want to live. Whether you want a sociable open-plan kitchen-diner or a sleek space that opens onto your garden, we make it happen with honest advice and proper craftsmanship.
- Years of experience
- Fully insured
- Design & build under one roof
- London-wide coverage
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5.0 Google Rating
55 Reviews
3–5 Year Written Warranty
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Trusted Local Builders
London & Essex
What is a kitchen extension?
A kitchen extension is a building project that expands your home outwards — usually into the rear or side of the property — to create a larger kitchen or open-plan kitchen-diner. It adds valuable living space and natural light without changing the upper floors, making it one of the most popular home improvements in London.
Unlike a loft conversion, which works upwards within the existing roof, a kitchen extension expands your ground floor outwards into the garden, the side return, or both. This is ideal for homeowners who want a sociable, open kitchen and dining space connected to the garden. Across London, kitchen extensions are hugely popular because they deliver significant extra living space, strong returns on investment, and a transformed heart of the home — all without the cost, stress and stamp duty of moving house.
Trusted Kitchen Extension Specialists Across London
As an established kitchen extension company in London, SBDS Construction Ltd has built its reputation on quality workmanship and reliable delivery. Our kitchen extension specialists combine practical building experience with a genuine eye for design, so the finished space looks right, flows well and works hard for your home.
When you choose our kitchen extension contractors in London, you get qualified, experienced tradespeople, fully insured work, and a team that knows London's housing stock — from Victorian terraces with narrow side returns to 1930s semis and modern builds. Every project is handled end to end by one dedicated point of contact, with bespoke designs created around your property rather than a one-size-fits-all template. We are local, we are accountable, and we are here long after the job is done.
Why Invest in a Kitchen Extension in London?
Why is a kitchen extension a smart investment in London?
With London property prices among the highest in the UK, moving to a bigger home is expensive once you factor in stamp duty, agent fees and moving costs. A kitchen extension adds living space and value to your existing home for a fraction of that cost — and a well-designed kitchen is one of the biggest selling points for buyers.
In a city where space is at a premium, the kitchen is the room buyers and families value most. A kitchen extension lets you stay in the home, area and school catchment you love while gaining the open, light-filled space modern living demands. It is a better long-term investment than many alternatives: you avoid the upheaval of relocating, you increase your property's resale value, and you create a genuinely useful family space. For most London homeowners, improving rather than moving is simply the more sensible financial decision.
Types of Kitchen Extensions We Offer
We design and build every main type of kitchen extension. The right choice depends on your property type, the space available, your budget and the layout you want. Here is a clear guide.
Single-Storey Rear Extension London
A rear extension expands your kitchen straight out into the back garden, creating a larger ground-floor space — the most popular kitchen extension in London.
Best for: terraced, semi-detached and detached homes with garden space.
Advantages: significant extra space, often falls under permitted development, opens to the garden.
Cost: mid-range (££).
Suitable property: most houses with a rear garden.
Side Return Extension London
A side return extension fills the narrow, often wasted alley space down the side of the house, widening a galley kitchen into a usable room.
Best for: Victorian and Edwardian terraces with a side return.
Advantages: transforms cramped galley kitchens, makes use of dead space, floods the room with light via roof glazing.
Cost: mid-range (££).
Suitable property: period terraces with a side return passage.
Wrap-Around Extension London
A wrap-around combines a rear and side return extension into an L shape, delivering the maximum ground-floor space.
Best for: homeowners wanting a large open-plan kitchen-diner-living space.
Advantages: the most space of any single-storey option, highly flexible layouts.
Cost: higher (£££).
Suitable property: terraces and semis with both rear and side space.
Double-Storey Extension London
A two-storey extension adds space on the ground floor and the floor above — a bigger kitchen below and an extra bedroom or bathroom upstairs.
Best for: families needing both a bigger kitchen and an extra room.
Advantages: excellent value per square metre, adds significant property value.
Cost: higher (£££).
Suitable property: homes with enough rear space and structure; usually needs planning permission.
Glazed / Glass Box Extension London
A contemporary extension using structural glass walls and a glass roof to create a bright, modern, indoor-outdoor space.
Best for: homeowners wanting a striking, light-filled design statement.
Advantages: stunning natural light, modern aesthetic, strong wow factor.
Cost: higher (£££).
Suitable property: properties where a contemporary look suits the home and garden.
Open-Plan Kitchen-Diner Conversion London
Not always a full extension — sometimes the answer is removing internal walls to open up the existing space into a sociable kitchen-diner.
Best for: homes with enough footprint but a closed-off, dated layout.
Advantages: lower cost, less disruption, transforms how the space feels and flows.
Cost: lower (£).
Suitable property: houses where internal walls can be safely removed.
Kitchen Extension Comparison
| Extension Type | Space Gained | Relative Cost | Planning Permission |
|---|---|---|---|
| Open-Plan Conversion | Low-Medium | £ | Rarely needed |
| Single-Storey Rear | Medium-High | ££ | Often permitted development |
| Side Return | Medium | ££ | Often permitted development |
| Wrap-Around | High | £££ | Sometimes needed |
| Glazed / Glass Box | Medium-High | £££ | Sometimes needed |
| Double-Storey | Very High | £££ | Usually needed |
Expert builders in London delivering high-quality construction solutions across London and Essex.
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Our Services
- Loft Conversion
- Kitchen Extension
- Side Extension
- House Renovation
- Bathroom Renovation
- Double Glazing
- Custom Kitchens