Kitchen Extensions Across London

For over 22 years, Foundation and Finishing has been delivering bespoke Kitchen Extensions across Greater London. We design and build practical, beautiful kitchen spaces that become the heart of your home.

London's Most Trusted Construction Partner

20+ Years Delivering Excellence

100+ London Projects Completed

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Based on 56 Reviews
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Based on 82 Reviews
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Based on 108 Reviews

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Our Services

Professional Building Services in Kitchen Extensions

For over 22 years, Foundation and Finishing has been delivering exceptional Kitchen Extensions services across Greater London. Whether you're adding space with a side return, creating an open-plan kitchen-diner, or building a double-storey addition, we handle every detail from planning permission to final completion.

A well-designed kitchen extension not only adds square metres, it completely changes how you cook, dine, and socialise. We specialise in creating open-plan kitchens with zones for cooking, dining, and relaxing, all tailored to the way your household actually lives. Working closely with you and, if required, your kitchen supplier, we ensure the structure, services, and layout are coordinated from the outset.

From modest rear or side extensions that allow for a larger kitchen layout to more ambitious open-plan spaces with islands, breakfast bars, and full-height glazing, we cover every aspect. Our team manages structural openings, steelwork, insulation, plumbing, electrics, extraction, lighting, and underfloor heating, so that when the kitchen units arrive everything is in the right place. The result is a highly functional, bright, and durable kitchen that adds both lifestyle and long-term value to your home.

Lifestyle-Focused Design

Creates a generous, modern kitchen that is tailored to how you cook, dine, and socialise.

Better Storage & Layouts

Allows for islands, peninsulas, and smarter storage solutions that keep the kitchen organised and efficient.

Brighter Central Space

Brings more natural light into the centre of the home through rooflights and well-placed glazing.

Social Hub of the Home

Integrates cooking, dining, and living in one social, open-plan space that suits family life and entertaining.

Added Value

Increases property value and buyer appeal by delivering the kind of kitchen many buyers now expect.

Energy-Efficient Upgrade

Improves energy performance with modern insulation, glazing, and heating solutions.

Why Families Choose Us

20+ Years, Results
That Speak for
Themselves

Over 100 London families trusted us with their biggest investment. The kind of work that makes homeowners call us back for their next property.

You Decide Everything, We Handle Everything

Over 100 London families trusted us with their biggest investment. The kind of work that makes homeowners call us back for their next property.

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Work That Actually Gets Done On Time

Over 100 London families trusted us with their biggest investment. The kind of work that makes homeowners call us back for their next property.

Same Team From Quote to Completion

We work with the same qualified tradespeople on every job. Gas engineers, electricians, builders, finishers. They know our standards and they deliver. One point of contact for you, zero coordination headaches.

Honest Communication

We give you realistic timelines and pricing up front. If we discover something unexpected during the work, you know immediately. No hiding problems until it's too late.

Group 2661 Foundation and Finishing in Greater London

20+ Years, Results
That Speak for
Themselves

Over 100 London families trusted us with their biggest investment. The kind of work that makes homeowners call us back for their next property.

You Decide Everything, We Handle Everything

Over 100 London families trusted us with their biggest investment. The kind of work that makes homeowners call us back for their next property.

Same Team From Quote to Completion

We work with the same qualified tradespeople on every job. Gas engineers, electricians, builders, finishers. They know our standards and they deliver. One point of contact for you, zero coordination headaches.

Honest Communication

We give you realistic timelines and pricing up front. If we discover something unexpected during the work, you know immediately. No hiding problems until it's too late.

Work That Actually Gets Done On Time

Over 100 London families trusted us with their biggest investment. The kind of work that makes homeowners call us back for their next property.

icon Trusted Construction Services
icon Quality Craftsmanship & Reliability
icon Strong Foundations, Lasting Results
icon Professional & Committed Team
icon Trusted Construction Services
icon Quality Craftsmanship & Reliability
icon Strong Foundations, Lasting Results
icon Professional & Committed Team

Our Process

Simple. Straightforward. No Surprises.

Here’s exactly how we handle every project, from start to finish.

Get In Touch

Here's exactly how we handle every project, from start to finish.

We Listen & Advise

We measure everything, talk through your vision, and tell you what will actually work in your space.

Clear Quote

Fixed price. Fixed timeline. No surprises halfway through your project.

We Build It

Same team from day one to completion. Weekly progress photos. Direct line to Fares whenever you need answers.

Frequently Asked Questions

We can either work with your preferred kitchen supplier or recommend trusted partners. Our role is to coordinate the structure and services so everything fits perfectly.
In many cases, yes. We design the layout to allow sufficient circulation space and ensure services like electrics and plumbing can reach the island safely.
Timelines vary, but a typical kitchen extension takes around 8–12 weeks from start on site to completion, excluding any separate kitchen lead times.
There will be a period where your main kitchen is out of action. We help you plan temporary arrangements and phase works to minimise disruption where possible.
Yes. We design proper extraction routes, ducting, and ventilation solutions to keep your new kitchen fresh, comfortable, and compliant with regulations.

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