Major open-plan space
By combining the side return and rear extension, you can create a large kitchen-diner-family room with far better flow.
London wraparound extension specialists
Wraparound Extensions London
Create a large open-plan kitchen, dining and living space with a bespoke L-shaped wraparound extension combining the side return and rear of your London home.
Londonwraparound specialists
L-Shapedside and rear extension
Designopen-plan living
Freequote and home survey
Bespoke L-shaped extensions
What is a wraparound extension?
A wraparound extension combines a side-return infill and a rear extension into one L-shaped build.
A well-designed wraparound extension transforms a typical London home by opening up the side and rear of the property, creating a wide, bright and connected kitchen, dining and living area. Instead of narrow disconnected rooms, your ground floor becomes one cohesive space that flows naturally towards the garden.
For London homeowners, a wraparound is often the ideal solution when you want maximum ground-floor space without building upwards. It makes use of the unused side access and part of the rear garden to create a larger, more practical family home.
- L-shaped side and rear extension design
- Large open-plan kitchen, dining and living areas
- Rooflights, full-height glazing and garden connection
- Complete design & build service from one team
Benefits
Benefits of a wraparound extension
A wraparound extension can transform how your home feels and functions, creating the “wow” factor many London families want from a modern ground-floor extension.
More natural light
Rooflights, lanterns, glazing and large garden doors bring light deep into the home and make the ground floor feel brighter.
Better value in one build
Building the side and rear together can be more efficient than completing two separate projects with duplicated setup costs.
Cohesive design
Your whole ground floor can be planned as one balanced layout, rather than piecemeal additions that do not connect properly.
Why choose us?
London wraparound extension design & build specialists
We manage your wraparound extension from first survey to final handover, combining design, planning, structural coordination, project management and construction into one joined-up service.
London extension experience
We understand London terraces, semi-detached homes, tight access, Party Wall matters, conservation areas and borough-specific planning expectations.
Design-led layouts
We create open-plan kitchens, dining spaces and family rooms that feel spacious, practical and naturally connected to the garden.
Planning support
Wraparound extensions usually need careful planning review. We check permitted development, prepare drawings and manage planning submissions where required.
Structural coordination
Opening side and rear walls often requires steelwork and structural calculations. We coordinate this properly for Building Control.
Fixed-price clarity
You receive a clear, itemised quote so you understand the agreed scope, inclusions and likely cost factors before work begins.
Dedicated project manager
Your project manager coordinates trades, inspections, materials and communication so the process stays organised.
Planning & regulations
Planning permission for wraparound extensions in London
Most wraparound extensions in London require planning permission because the combined L-shaped extension often exceeds permitted development limits. Even where individual side or rear elements may seem eligible, the combined size, width, depth and relationship to boundaries need proper assessment.
We check your property, borough rules, conservation status, previous extensions, neighbour impact and Party Wall requirements before advising the right route. We can prepare drawings, submit the application, liaise with the council and coordinate Building Regulations approval.
- Planning permission and permitted development checks
- Party Wall guidance for shared walls and boundaries
- Structural calculations for steelwork and open-plan layouts
- Building Regulations drawings and Building Control support
Cost guide
Wraparound extension cost in London
A London wraparound extension is a substantial single-storey build and typically costs around £60,000–£100,000+ depending on size, structure, glazing, specification, access and finishes. Terrace houses may sit lower, while larger semi-detached homes and premium projects can cost more.
Because a wraparound combines a side-return and rear extension in one phase, it can be more efficient than doing two separate projects. A single build can reduce duplicated setup, scaffolding and mobilisation costs.
- Mid-range wraparound projects often start from around £60,000
- Premium glazing, kitchens and finishes can push projects above £100,000
- Structural steel, foundations and drainage affect cost
- We provide a fixed-price itemised quotation before work begins
Our process
Our wraparound extension design & build process
We follow a clear design-build process to keep your wraparound extension organised, practical and stress-free.
Initial consultation & survey
We visit your property, inspect the side alley and rear garden, discuss your ideas and provide initial guidance on feasibility and budget.
Full design & planning
Our design team produces plans and coordinates planning permission, Building Regulations and structural calculations.
Construction programme
Once approved, we plan the build, order materials, coordinate trades and prepare your site for foundations, steelwork and structural openings.
Build & fit-out
We construct the side and rear elements, install glazing and rooflights, open the internal layout and complete the kitchen, flooring, lighting and finishes.
Handover & warranty
We complete snagging, final checks and handover documentation so your new space is ready to enjoy.
Design inspiration
Create the heart of your home
A wraparound extension can create one large connected space for cooking, dining, entertaining and relaxing. Popular design features include kitchen islands, roof lanterns, full-height glazing, bi-fold or sliding doors, hidden storage, utility zones and seamless flooring between old and new spaces.
Because the side and rear are planned together, the proportions can feel balanced and intentional. This is especially important in London homes where space is limited and every square metre matters.
- Open-plan kitchen-dining-living spaces
- Rooflights and large glazed doors
- Seamless garden connection
- Custom storage, utility rooms and kitchen layouts
Related services
Everything your wraparound project needs
Wraparound extensions are more complex than simple rear extensions. They need strong design, planning knowledge, structural coordination and careful site management.
Design & build
Our design & build service keeps your wraparound extension coordinated from concept to completion.
View Design & BuildPlanning support
We advise on planning permission, permitted development, conservation areas and Lawful Development Certificates.
View Planning HubProject management
Dedicated project management keeps trades, inspections, schedules and site communication clear throughout the build.
View Project ManagementQuestions homeowners ask
Wraparound extensions London FAQs
How much does a wraparound extension cost in London?
It depends on size and specification, but a mid-range single-storey wraparound extension in London typically costs around £60,000–£100,000+. Premium projects with high-end glazing, kitchens and finishes can cost more.
Do I need planning permission for a wraparound extension?
Usually yes. Because a wraparound combines side and rear extensions, the overall L-shaped build often exceeds permitted development limits. We check your property and handle planning applications where required.
How long does a wraparound extension take?
A typical single-storey wraparound extension can take around 4–6 months on site, plus design and planning time. From initial survey to final handover, many projects take around 5–7 months depending on complexity.
Is a wraparound extension worth it?
Yes. A wraparound extension can create a major increase in ground-floor living space and often transforms how the home works day-to-day. Many London homeowners choose this route instead of moving.
What are the advantages of a wraparound extension?
Advantages include more living space, better natural light, improved kitchen-dining layouts, stronger garden connection and more efficient use of the side and rear of the property.
Can you manage the whole project?
Yes. We can manage design, planning, structural calculations, Building Regulations, Party Wall guidance, construction, finishes and final handover.
Start your wraparound extension
Request a free wraparound extension quote
Tell us about your property, side return, rear garden and the open-plan space you want to create. We will advise on design options, planning route, likely build stages and next steps.
- Free no-obligation first conversation
- Advice on design, planning and build feasibility
- Support with quotations, regulations and project management
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Speak with our London team about your wraparound extension, from design and planning through to construction and final handover.