Rear Extension
Create additional living, kitchen or dining space at the back of your home.
Home extensions in London
More space, designed around your home.
From initial feasibility and visual direction to construction and final finishes — WEBUD helps you create additional space through one clear, managed extension project.
- Initial project consultation
- Visual direction before construction
- One managed project from plan to handover
- London-based team
- Extension project coordination
- Clear project management
- Regular progress communication
Designed for more
Create the space your home is missing.
A well-planned extension can provide more light, better flow and additional living space without leaving the home and area you already know.
- Larger kitchen and dining area
- More natural light
- Better garden connection
- Additional living space
- Improved ground-floor layout
- More useful family space
Plan your extension
Tell us what you want to create.
See the potential
Visualise your extension before construction begins.
Upload a photo of your home, select an extension direction and receive an early visual concept.
- Choose an extension type
- Select a preferred style
- Upload a property photo
- See the early concept
Extension direction
Style
AI-generated concept only. Feasibility, dimensions, planning requirements and technical details are confirmed after a site assessment and professional design review.
Extension options
Find the right way to extend your home.
Side-Return Extension
Use the narrow side space common in London terraced homes to improve the kitchen and ground-floor layout.
Wraparound Extension
Combine rear and side space for a larger transformation and more flexible layout.
Double-Storey Extension
Add space across two floors, subject to property, planning and structural requirements.
Kitchen Extension
Create a larger kitchen and dining area with improved light and garden connection.
Complete extension service
From first idea to finished space.
The final scope is confirmed in your detailed proposal. Not every item applies to every project.
Initial assessment
- Project discussion
- Property review
- Initial scope
- Feasibility considerations
Design coordination
- Layout direction
- Visual concepts
- Material direction
- Coordination with required professionals
Planning and approvals
- Planning route review
- Building Regulations considerations
- Required documentation
- Coordination where agreed
Preparation and groundworks
- Site preparation
- Excavation
- Foundations
- Drainage considerations
Structure and envelope
- Structural work
- Walls and roof
- Windows and doors
- Insulation and weather protection
Internal services
- Plumbing
- Electrical work
- Heating considerations
- Ventilation
Interior completion
- Kitchen installation where included
- Flooring
- Decorating
- Lighting
- Joinery
- Final finishes
Project management
- Scheduling
- Contractor coordination
- Progress updates
- Quality checks
- Final handover
Planning with clarity
Understand the route before construction starts.
Planning permission
Some extensions may require full planning permission, depending on the property, location and proposed work.
Permitted development
Some projects may fall within permitted development rights, but this depends on the property and any local restrictions.
Building Regulations
Building work may still require Building Regulations approval even when full planning permission is not required.
Additional considerations
- Structural engineer
- Party Wall matters
- Thames Water build-over considerations
- Conservation areas
- Leasehold or freeholder consent
General information only, not legal or planning advice. Requirements and outcomes depend on your property and location and are not guaranteed; we recommend confirming them with the local authority or a qualified professional.
Extension projects
More space, thoughtfully connected.
- Concept example
Concept
Contemporary Rear Extension
Challenge: Concept example — a closed-in kitchen with little light and no link to the garden.
Approach: Concept example — a rear extension with large glazing, planned with the required professionals.
Outcome: Concept example — a larger kitchen and dining space that opens onto the garden.
- Larger kitchen
- Dining area
- Garden connection
- Roof glazing
- Concept example
Concept
London Side-Return Extension
Challenge: Concept example — a narrow kitchen and unused side passage limiting light and layout.
Approach: Concept example — the side return brought into the house with a glazed roof and new layout.
Outcome: Concept example — a wider kitchen with better natural light and ground-floor flow.
- Wider kitchen
- Improved natural light
- Better ground-floor flow
- New finishes
- Concept example
Concept
Wraparound Home Extension
Challenge: Concept example — needing kitchen and family space that connects side and rear of the home.
Approach: Concept example — an L-shaped extension with a structural opening and new glazing.
Outcome: Concept example — a flexible kitchen and family space with complete interior finishing.
- Kitchen and family space
- Structural opening
- New glazing
- Complete interior finishing
Showing extension project 1 of 3: Contemporary Rear Extension
See a completed project: contemporary rear extension in Wanstead
How it works
A clear extension journey.
Consultation and property assessment
We discuss your goals, review the property and understand the current stage of your project.
Planning and detailed proposal
The project scope, visual direction, required professional input and detailed construction proposal are developed before work begins.
Construction and handover
WEBUD manages the agreed construction work, coordinates the project and completes the final inspection and handover.
Budget and programme
Every extension begins with a clear scope.
What affects cost
- Extension size
- Number of storeys
- Ground conditions
- Structural requirements
- Glazing and doors
- Kitchen specification
- Plumbing and electrical work
- Internal finishes
- Planning and professional fees
- Property access
- Whether the property is occupied
What affects the programme
- Design stage
- Planning route
- Required approvals
- Material lead times
- Construction complexity
- Changes during the project
Built with clarity
Stay informed throughout the build.
- Named project contact
- Clear project stages
- Regular progress updates
- Decisions and approvals
- Documented changes
- Final inspection and handover
Project progress
- Stage
- Groundworks
- Coming next
- Structure
- Decision needed
- Confirm glazing
- Change log
- No changes this week
Why WEBUD
One team. One managed extension project.
Planning before construction
Clear scope and proposal
Coordinated project stages
Regular project communication
Frequently asked questions
Planning a home extension?
How much does a house extension cost in London?
Cost depends on the size and type of extension, ground conditions, structural requirements, glazing, kitchen and finishes, professional fees and access to the property. After an initial consultation and property assessment we prepare a clear proposal, rather than quoting a cost per square metre upfront.
How long does a home extension take?
The programme depends on the design stage, the planning route, any required approvals, material lead times and the complexity of construction. We talk through realistic timings with you as the scope becomes clear, rather than promising a fixed duration.
Do I need planning permission?
It depends on your property, its location and the proposed work. Some extensions need full planning permission and some may fall within permitted development, but this varies. We can discuss your project stage and the planning route, and we recommend confirming requirements with your local planning authority or a qualified professional.
What is permitted development?
Permitted development rights allow certain building work without a full planning application. Whether they apply depends on the property and any local restrictions, such as conservation areas or previous alterations. It is best to confirm eligibility for your specific property.
Do I need Building Regulations approval?
Building work may still need Building Regulations approval even when full planning permission is not required. We can discuss what is likely to apply to your project and coordinate the documentation as part of the agreed scope.
Can you help coordinate drawings and design?
We can help coordinate the design direction and work with the professionals your project requires. Exactly which drawings and professional services are involved is confirmed in the detailed proposal.
Can I see a concept before construction starts?
Yes. We aim to provide early visual direction before construction. Any concept is illustrative only; feasibility, dimensions and technical details are confirmed after a site assessment and professional design review.
What type of extension is suitable for my home?
It depends on your property, the space available, how you want to use it and any planning or structural considerations. Rear, side-return, wraparound, double-storey and kitchen extensions all suit different homes. We can talk through the options during the initial consultation.
Can I stay in the property during construction?
Often people stay in the property during an extension, but it depends on the scope of work and how the existing house is affected. We discuss practical arrangements with you during the consultation.
Do I need a structural engineer?
Most extensions involve structural design, for example for openings, foundations or roof structure. A structural engineer is commonly involved. We coordinate with the required professionals as part of the agreed scope.
Does the Party Wall Act apply?
It may apply if the work affects a shared wall or is close to a neighbouring property, which is common with terraced and semi-detached homes. Party Wall matters are a legal process, so we recommend seeking appropriate professional advice for your situation.
Do you manage kitchens inside extensions?
Yes, where included in the agreed scope. A kitchen inside an extension can be planned and installed as part of the same project so the layout, services and finishes work together.
What areas of London do you cover?
WEBUD is based in London and works on homes across the city. Send us your postcode with your enquiry and we will confirm whether we can help.
How do I start my extension project?
Use the Project Planner on this page, or contact us on WhatsApp or by email. Tell us about your property and what you would like to create, and we will arrange an initial consultation.
Start your project
Ready to create more space?
Tell us about your property, upload a few photographs or drawings and arrange an initial extension consultation with WEBUD.
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