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Central London extension specialists

Central London House Extensions

Transform your Central London property with a bespoke house extension designed around space, light, planning constraints and premium finish quality. We deliver rear, side-return, wraparound and kitchen extensions with a joined-up design, planning and build approach.

CentralLondon specialists
Design & Buildone clear route
Planningapproval support
Premiumfinish quality
Central London terraced house with a modern open-plan kitchen extension featuring a skylight
Bespoke home extensions

Design-Led Home Extensions in Central London

Central London homes often need careful planning, intelligent layouts and high-quality detailing. We help homeowners create extra space without losing the character of the original property.

From compact rear extensions in terrace houses to sophisticated wraparound and side-return layouts, our team manages the design, permissions, structural coordination and construction process from the first consultation to final handover.

We work with homes across Central London, including areas such as Westminster, Camden, Islington, Kensington, Chelsea, Marylebone, Bloomsbury and surrounding neighbourhoods.

  • Bespoke design and build service for Central London properties
  • Rear, side-return, wraparound and open-plan kitchen extensions
  • Planning permission, permitted development and conservation-sensitive advice
  • Premium finishes, glazing, skylights and project management
Our services

Our Central London Extension Services

Every Central London extension needs the right balance of space, planning strategy, natural light and finish quality. We design each project around the property, the area and the way you want to live.

Rear Extensions in Central London

Create a brighter kitchen, dining or family space by extending into the rear garden with elegant glazing, rooflights and a refined indoor-outdoor connection.

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Side-Return Extensions in Central London

Make better use of the narrow side return found in many London terraces, adding width, natural light and a more practical open-plan layout.

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Wraparound Extensions in Central London

Combine rear and side space for a larger transformation, often ideal where a premium kitchen, dining and living zone is the main goal.

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Kitchen & Open-Plan Extensions

Design a high-end kitchen extension with full-height glazing, skylights, roof lanterns, bespoke finishes and a layout made for everyday living.

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Design & build expertise

Architectural Design & Build from Concept to Completion

A Central London extension needs more than standard building work. It needs sensitive design, early planning awareness, careful structural coordination and a finish that feels consistent with the value of the property.

Our design and build route keeps the process joined up. We review feasibility, layout, planning route, structural requirements, materials, glazing and build programme before the work starts on site.

  • Architectural design, feasibility and planning guidance
  • Structural engineering and Building Regulations coordination
  • Project management, site organisation and quality control
  • High-end kitchens, rooflights, glazing and interior finishes
Luxury wraparound rear extension in Central London with floor-to-ceiling glass walls
Why choose us

Why Choose House Extensions London for Central London Extensions?

We focus on premium residential extensions where design quality, planning confidence, communication and finish detail matter from day one.

Central London expertise

We understand tighter sites, period buildings, conservation sensitivity, neighbour impact and access constraints common in Central London.

Design & build clarity

One joined-up route helps connect design, approvals, structural coordination, construction and final finishing.

Planning support

We advise on permitted development, planning permission, conservation areas and the right approval path for your property.

Premium specification

We plan rooflights, floor-to-ceiling glazing, kitchens, flooring, lighting and finishes as part of the overall design.

Project management

Your extension is managed through clear stages with communication, site organisation and quality control.

Warranty and aftercare

We can support your project with clear documentation, snagging, handover and warranty-led reassurance.

Premium Central London side-return extension with glazed roof lantern and open-plan living space
Planning & property value

Planning Permission, Costs and Central London Constraints

Costs and approvals depend on size, specification, access, structure, conservation status and the level of finish. Central London projects can require additional care because of neighbouring properties, party wall matters, listed buildings, conservation areas and limited site access.

Some extensions may be possible under permitted development, while others need a full planning application. Building Regulations approval is usually required, and structural calculations are often needed where large openings, steelwork or new roofs are involved.

  • Planning permission and permitted development checks
  • Conservation area and period-property sensitivity
  • Structural calculations, party wall and Building Regulations support
  • Clear quotation guidance after survey and design review
Our process

Our Central London Design & Build Process

We manage each stage carefully so your project moves from idea to completed extension with clear decisions, organised documentation and premium finish control.

Consultation and feasibility

We review your property, goals, likely planning route, access, budget, images, drawings and extension options.

Design and approvals

We develop the layout, glazing, materials and approval route, coordinating planning, Building Regulations and structural requirements.

Construction planning

We organise build stages, trades, programme, materials, access and site preparation so the work is controlled from the start.

Build and finishes

We manage foundations, structure, roof, glazing, services, kitchens, finishes and final detailing.

Handover and aftercare

We complete snagging, final checks and handover support so the finished extension is ready to use.

Extension possibilities

What We Can Create for Your Central London Home

Whether you own a terrace, townhouse or period property, we can help you create a brighter, more practical and more valuable home with a carefully planned Central London extension.

Luxury Rear Extensions

Create a refined garden-facing living space with full-height glazing, rooflights and a seamless connection between kitchen, dining and outdoor areas.

Side-Return Transformations

Make better use of narrow side access space with a wider kitchen layout, improved natural light and elegant roof lantern or skylight details.

Open-Plan Kitchen Living

Design a premium kitchen, dining and family space with bespoke finishes, structural openings, underfloor heating and clean modern detailing.

Bespoke Design & Build

Bring design, planning, structural coordination and construction together under one clear route for a smoother Central London extension project.

Questions homeowners ask

Central London House Extensions FAQs

How much do extensions cost in Central London?

Costs vary by size, structure, access and specification. A basic single-storey extension is usually priced per square metre, while high-end Central London projects with premium glazing, kitchens and finishes can cost more. We provide a tailored quote after reviewing your property and design goals.

Do I need planning permission for an extension in Central London?

It depends on the property, location, size, height, conservation status and previous changes. Some projects may fall under permitted development, while others need planning permission. We help assess the correct route and coordinate approvals.

What extensions work best for Central London terraces?

Rear, side-return and wraparound extensions are common for terrace homes because they can improve kitchen, dining and living space while keeping the original building proportions in mind.

Will an extension add value to my Central London home?

A carefully designed extension can improve property value by adding usable space, natural light and a more desirable layout. The strongest value comes from quality design, planning compliance and a finish that suits the property.

How long does a typical Central London extension take?

Timescales depend on design, permissions, party wall matters, structural complexity and finish level. Many single-storey extensions take several months from early design to completion.

Do you handle design, planning, Building Regulations and construction?

Yes. We provide a joined-up design and build service covering feasibility, design, planning support, structural coordination, Building Regulations, construction, finishes and handover.

Get started

Book Your Free Central London Design Consultation

Tell us about your property, postcode, preferred extension type and the space you want to create. We will advise on design options, planning route, likely build stages and next steps.

  • Free first conversation with no obligation
  • Advice on planning, design and build feasibility
  • Support with structural calculations and Building Regulations
  • Premium design and build route for Central London homes
Central London
Design & Build
Free Review

Request Your Free Quote

Tell us about your Central London extension and we will come back to you with the best next step.

No pressure. No obligation. We reply within 1 working day.

Ready to extend your Central London home?

Speak with our team about rear, side-return, wraparound or open-plan kitchen extensions in Central London.